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beruecksichtige naturwissenschaftliche Journale:
Environmental Chemistry - published by
CSIRO -
... is a multidisciplinary journal addressing chemical processes of the environment.
Environmental Science & Technology - published by
The American Chemical Society -
Published twice monthly, ES&T is a unique source of information for scientific and technical professionals in a wide range of environmental disciplines
Journal of Environmental Monitoring - published by
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... focuses on Environmental Processes and Impacts.
Environmental Chemistry Letters - published by
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... is located at the interfaces of geology, chemistry, physics and biology.
Aktuelle wissenschaftliche Fachartikel der
genannten Journale:
Anthony J. Carrasquillo, Gregory L. Bruland, Allison A. MacKay, and Dharni Vasudevan Web Release Date: Fri, 5 Sep 2008 00:00:00 EDT (Article) DOI: 10.1021/es801277y
Thomas A. Davis, Erwin J. J. Kalis, Jose Paulo Pinheiro, Raewyn M. Town, and Herman P. van Leeuwen Web Release Date: Fri, 5 Sep 2008 00:00:00 EDT (Article) DOI: 10.1021/es801068c
Yuanxun Zhang, James J. Schauer, Martin M. Shafer, Michael P. Hannigan, and Steven J. Dutton Web Release Date: Thu, 4 Sep 2008 00:00:00 EDT (Article) DOI: 10.1021/es800126y
Sung-Deuk Choi, Song-Yee Baek, Yoon-Seok Chang, Frank Wania, Michael G. Ikonomou, Young-Jun Yoon, Byong-Kwon Park, and Sungmin Hong Web Release Date: Thu, 4 Sep 2008 00:00:00 EDT (Article) DOI: 10.1021/es801004p
Jihee Song, Alba Webb, Barbara Parmenter, David T. Allen, and Elena McDonald-Buller Web Release Date: Thu, 4 Sep 2008 00:00:00 EDT (Article) DOI: 10.1021/es800645j
J. Dessureault-Rompré, B. Nowack, R. Schulin, M.-L. Tercier-Waeber, and J. Luster Web Release Date: Wed, 3 Sep 2008 00:00:00 EDT (Article) DOI: 10.1021/es800167g
David Brown
(Editorial from J. Environ. Monit.)
David Brown, J. Environ. Monit., 2008, DOI: 10.1039/b813334b
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry
Abstract For the first time, we show the presence of nitro substituted naphthalenes in both mainstream and sidestream tobacco smoke
using electron monochromator-mass spectrometry. Only one mainstream smoke sample showed the presence of 1-nitronaphthalene
(1-NN) at 20 pg/cigarette, while all of the sidestream smoke samples showed the presence of 1-NN at levels ranging from 0.40
to 0.60 ng/cigarette and 2-NN at quantities ranging from 1 to 2 ng/cigarette. Additionally, these levels showed a ratio of
~1:3 for 1-NN to 2-NN which demonstrates that the formation of 2-NN is favored under sidestream combustion conditions. No
larger ring structure (>2) nitro-aromatics were identified.
Content Type Journal Article
Category Original Paper
DOI 10.1007/s10311-008-0174-x
Authors
Crystal D. Havey, Colorado School of Mines Department of Chemistry and Geochemistry Golden CO 80401 USA
A. John Dane, Colorado School of Mines Department of Chemistry and Geochemistry Golden CO 80401 USA
Christy Abbas-Hawks, Colorado School of Mines Department of Chemistry and Geochemistry Golden CO 80401 USA
Kent J. Voorhees, Colorado School of Mines Department of Chemistry and Geochemistry Golden CO 80401 USA
Abstract Soil fertility is conventionally evaluated by soil properties such as C, N, and P contents. Evaluation of soil fertility is
now becoming a routine work for soil management and crop production. However, laboratory-analysis based determination of soil
properties is time and cost consuming, which is not suitable for precision agriculture. Here, infrared spectroscopy (IR) appears
as an alternative and fast technique to measure soil fertility. The IR transmission method is generally used in soil qualitative
analysis, while the IR reflectance can be used in soil quantitative analysis, and most of soil-related research is focused
on reflectance spectroscopy. Infrared reflectance spectra, including diffuse reflectance spectra and total attenuated reflectance
spectra, are involved in soil quantitative analysis. We observe an excellent performance of predicting soil C and N contents
using IR spectra. Moreover, in most of cases the predictions of the contents of soil P, K, Ca, Mg, S, and some other microelements
are satisfactory. Soil water, soil clays, and soil microbes can also be characterized and evaluated using IR spectroscopy.
In recent years, a new method named infrared photoacoustic spectra was applied in soil analysis. Infrared-photoacoustic spectra
is indeed more convenient for sample pretreatment and spectra recording, and the recorded soil spectra contain more useful
information versus conventional reflectance spectroscopy. Though currently the application of infrared photoacoustic spectroscopy
in soil analysis is limited, it appears promising to measure soil fertility. The application of infrared spectroscopy in soil
fertility is largely dependent on spectra pretreatment and multivariate calibration due to strong interferences in the spectra.
Partial least square (PLS) and artificial neural network (ANN) are two widely used mathematical tools in the prediction of
soil properties, and more mathematical tools combined models will benefit the prediction performance. To make full use of
soil infrared spectra, soil spectra library construction is needed in future, and a standard procedure should be first decided
in the construction. Based on soil infrared spectra library soil fertility can be fast evaluated combining suitable mathematical
model, which will play an important role in the sustainable agriculture.
Content Type Journal Article
Category Review
DOI 10.1007/s10311-008-0166-x
Authors
Changwen Du, Institute of Soil Science Chinese Academy of Sciences The State Key Laboratory of Soil and Agricultural Sustainability Nanjing 210008 China
Jianmin Zhou, Institute of Soil Science Chinese Academy of Sciences The State Key Laboratory of Soil and Agricultural Sustainability Nanjing 210008 China
Ping Li, Hong-Bin Xu, Shi-Li Zheng, Yi Zhang, Zuo-Hu Li, and Yu-Lan Bai Web Release Date: Fri, 29 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es801724m
Ryan C. Moffet, Yury Desyaterik, Rebecca J. Hopkins, Alexei V. Tivanski, Mary K. Gilles, Y. Wang, V. Shutthanandan, Luisa T. Molina, Rodrigo Gonzalez Abraham, Kirsten S. Johnson, Violeta Mugica, Mario J. Molina, Alexander Laskin, and Kimberly A. Prather Web Release Date: Fri, 29 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es7030483
Adam P. Bateman, Maggie L. Walser, Yury Desyaterik, Julia Laskin, Alexander Laskin, and Sergey A. Nizkorodov Web Release Date: Fri, 29 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es801226w
Laura L. Lapham, Jeffrey P. Chanton, Christopher S. Martens, Paul D. Higley, Hans W. Jannasch, and J. Robert Woolsey Web Release Date: Fri, 29 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es801195m
George D. Wardlaw, J. Samuel Arey, Christopher M. Reddy, Robert K. Nelson, G. Todd Ventura, and David L. Valentine Web Release Date: Fri, 29 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es8013908
Yuzo Miyazaki, Yutaka Kondo, Lokesh K. Sahu, Junichi Imaru, Nobuhiko Fukushima, Minoru Kano
(Paper from J. Environ. Monit.)
Yuzo Miyazaki, J. Environ. Monit., 2008, DOI: 10.1039/b806957c
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry
Heidi Hellén, Josef Dommen, Axel Metzger, Astrid Gascho, Jonathan Duplissy, Torsten Tritscher, Andre S. H. Prevot, and Urs Baltensperger Web Release Date: Thu, 28 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es801279m
Michael I. Lowry, Shannon L. Bartelt-Hunt, Stephen M. Beaulieu, and Morton A. Barlaz Web Release Date: Thu, 28 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es800907j
Laszlo Bencs, Khaiwal Ravindra, Johan de Hoog, Elise Octavie Rasoazanany, Felix Deutsch, Nico Bleux, Patrick Berghmans, Edward Roekens, Agnieszka Krata, Rene Van Grieken
(Paper from J. Environ. Monit.)
Laszlo Bencs, J. Environ. Monit., 2008, DOI: 10.1039/b805157g
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry
Abstract Heavy metal discharges to aquatic environment are of great concern due to their toxicity and accumulative behavior. Zinc is
an essential trace element required for different physiological functions and plays important role in cellular metabolism.
However, it becomes toxic when elevated concentrations are introduced into the environment. The aim of this work is to analyze
zinc induced biochemical changes in the brain tissues of Labeo rohita fingerlings using Fourier Transformation Infrared Spectroscopy. Several important features have been observed in the zinc
intoxicated brain tissues, namely, altered membrane lipid, altered protein profile and decreased glycogen content, indicating
an alteration in the lipid and protein profiles leading to modification in membrane composition. Further, it is observed that
the acute exposure to zinc causes some alteration in protein profile with a decrease in α-helix and an increase in random
coil structures.
Content Type Journal Article
Category Original Paper
DOI 10.1007/s10311-008-0171-0
Authors
PL. RM. Palaniappan, Annamalai University Department of Physics Annamalai Nagar, Chidambaram Tamilnadu 608002 India
K. S. Pramod, Annamalai University Department of Physics Annamalai Nagar, Chidambaram Tamilnadu 608002 India
V. Vijayasundaram, Annamalai University Department of Physics Annamalai Nagar, Chidambaram Tamilnadu 608002 India
Abstract We demonstrated a complete decomposition method for ionic liquids (ILs; organic cation part: butyl-methyl or ethyl-methyl
imidazolium, and inorganic anion part: PF6 â, BF4â or Brâ) in aqueous media by combining a hydrothermal mineralization method with a photocatalytic decomposition (PD) method. As a
result, the hydrothermal treatment with Ca(OH)2 mineralizer could effectively remove the inorganic anion part, such as PF6â or BF4â and the PD could decompose the organic cation part effectively. Therefore, the detoxification of ILs in aqueous media was
accomplished by the present method.
Content Type Journal Article
Category Original Paper
DOI 10.1007/s10311-008-0177-7
Authors
Takeshi Itakura, Nagoya University Division of Environmental Research, EcoTopia Science Institute Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
Kazumasa Hirata, The Nippon Synthetic Chemical Industry Co., Ltd Oyodonaka, Kita-ku Osaka 531-0076 Japan
Masanori Aoki, Nagoya University Department of Applied Chemistry, Graduate School of Engineering Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
Ryo Sasai, Nagoya University Division of Environmental Research, EcoTopia Science Institute Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
Hisao Yoshida, Nagoya University Department of Applied Chemistry, Graduate School of Engineering Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
Hideaki Itoh, Nagoya University Division of Environmental Research, EcoTopia Science Institute Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
Abstract The photocatalytic degradation of hydrolyzed reactive violet 5 (RV5) using titanium dioxide (TiO2) was investigated in this study. The effects of various factors including the amount of photocatalyst, RV5 concentration,
light intensity, and pH on photocatalytic degradation were evaluated. The photodegradation efficiency was 90% after 20 min
of irradiation and reached nearly 100% after 80 min under the condition of pH 4 and temperature of 25°C. The decolorization
rate typically followed first-order reaction, and increased markedly with increasing amount of photocatalyst, pH as well as
light intensity. The total mineralization, based on total organic carbon (TOC) concentration was 53% after 20 min of UV light
exposure and approached nearly 100% after 140 min. The final mineralization product was formylformamide. The photodegradation
was faster than the mineralization, indicating that the intermediate products of decolorization were resistant to photodegradation.
In this study, we found that toxicity of RV5 significantly decreased after decolorization. Our study suggests that the photocatalytic
degradation treatment of RV5 with TiO2 in wastewater is a simple and fast method.
Content Type Journal Article
Category Original Paper
DOI 10.1007/s10311-008-0178-6
Authors
Ying-Chien Chung, China Institute of Technology Department of Biological Science and Technology Taipei 115 Taiwan, ROC
Chih-Yu Chen, Hsing Wu College Department of Tourism Taipei 244 Taiwan, ROC
Abstract Food and beverages contain many toxic chemicals that raise health concerns. Ethyl carbamate (EC) or urethane is the ethyl
ester of carbamic acid. It occurs at low level, from ng/L to mg/L, in many fermented foods and beverages. Ethyl carbamate
is genotoxic and carcinogenic for a number of species such as mice, rats, hamsters and monkeys. It has been classified as
a group 2A carcinogen, âprobably carcinogenic to humansâ, by the World Health Organizationâs International Agency for Research
on Cancer (IARC) in 2007. The benchmark dose lower limit of ethyl carbamate is 0.3 mg/kg bw per day and the mean intake of
ethyl carbamate from food is approximately 15 ng/kg bw per day. Those levels were calculated for relevant foods including
bread, fermented milk products and soy sauce. Alcoholic beverages were not included in this calculation. However, high levels
of ethyl carbamate can be found in distillated spirits at concentrations ranging from 0.01 to 12 mg/L depending on to the
origin of spirit. Alcoholic drinks should thus be considered as a source of ethyl carbamate. Ethyl carbamate is produced by
several chemical mechanisms: first, from urea and various proteins like citrulline produced during the fermentation step and
second from cyanide, and hydrocyanic acid, via ethyl carbamate precursors such as cyanate. A large panel of ethyl carbamate
formation mechanisms is described from simple ethanolysis of urea in homogeneous liquid phase to photochemical oxidation of
cyanide ion or complex heterogeneous gas/solid catalytic reactions. Determination of ethyl carbamate in foods and beverages
involves various strategies according to the material, food or beverage, solid or liquid, and according to the concentration,
from ng/L to mg/L. Usually, adapted extractive techniques and pre-concentration step are followed by analysis by gas chromatography
coupled to mass spectrometry (GCâMS of GCâMSâMS). High performance liquid chromatography (HPLC) and semi-quantitative spectroscopic
methods (infra-red) are also proposed as valuable alternatives to the classical but time-consuming GCâMS. Various preventing
methods are developed and used in some cases at industrial scale to lower ethyl carbamate levels in food. Two types of preventing
methods are described. First, adapted and optimised practices in all step of the chain of foodsâ (or beverages) production
lead in general to low ethyl carbamate level. Second, the abatement of ethyl carbamate precursors can be done by adapted enzymatic,
physical chemical or chemical methods according to the natures of raw materials and conditions of their production processes.
Abstract Fertilization by phosphorus and also nitrogen fertilizers are the main source of cadmium soil contamination. Cadmium is relatively
easily taken up by plants and then consequently enters their food chain. We investigated whether the cultivation medium with
or without sulphates supplement affects the synthesis of protective low molecular mass thiols such as cysteine, reduced glutathione,
oxidized glutathione and phytochelatins (PC2) in Dionaea muscipula treated with cadmium(II) ions at 0, 1, 5, 10, 25, 50, 100, 250, 500 and 1,000 ÎŒM for 6 weeks. The plants cultivated in the
presence of sulphates showed higher cadmium tolerance due to faster growth and lesser number of necrosis hallmarks. Further,
we utilized liquid chromatography with electrochemical detection for determination of the thiols in plant tissues. In the
case of the plants cultivated on media supplemented with sulphates for 6 weeks the average PC2 level was 2,830 ng/g of fresh
weight (FW). However, the plants cultivated on media without the presence of sulphates on average contained 1,160 ng PC2/g
FW. Results obtained showed the positive effect of sulphur supplementation in cadmium detoxification processes in plants.
In addition to thiol content, we also determined level of majority secondary metabolite of Venus flytrap, naphthoquinone plumbagin.
Generally, the presence of sulphates in the media enhanced the protective mechanism and did not affect directly the synthesis
of secondary metabolite plumbagin.
Content Type Journal Article
Category Original Paper
DOI 10.1007/s10311-008-0179-5
Authors
Petr Babula, University of Veterinary and Pharmaceutical Sciences Department of Natural Drugs, Faculty of Pharmacy Palackeho 1-3 612 42 Brno Czech Republic
Pavel Ryant, Mendel University of Agriculture and Forestry Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agronomy Zemedelska 1 613 00 Brno Czech Republic
Vojtech Adam, Mendel University of Agriculture and Forestry Department of Chemistry and Biochemistry, Faculty of Agronomy Zemedelska 1 613 00 Brno Czech Republic
Josef Zehnalek, Mendel University of Agriculture and Forestry Department of Chemistry and Biochemistry, Faculty of Agronomy Zemedelska 1 613 00 Brno Czech Republic
Ladislav Havel, Mendel University of Agriculture and Forestry Department of Plant Biology, Faculty of Agronomy Zemedelska 1 613 00 Brno Czech Republic
Rene Kizek, Mendel University of Agriculture and Forestry Department of Chemistry and Biochemistry, Faculty of Agronomy Zemedelska 1 613 00 Brno Czech Republic
Abstract We analyse the kinetics of CO2 and methane hydrate formation. The characteristic formation times are associated with different steps of the formation process.
Conditions for minimising these rate times are identified while maintaining a regime where CO2 hydrate is formed and methane remains predominantly gaseous. This involves a rapid pressurisation routine and accesses points
well above the phase boundary in order to enable faster kinetics. Conditions for optimising rates and times, to obtain maximum
CO2 uptake with respect to CH4, were identified as (1) stirring faster than 1,000 rpm, (2) rapid pressurisation to a partial pressure of around 50 bar for
CO2 and (3) re-use of contaminated as opposed to fresh water.
Content Type Journal Article
Category Original Paper
DOI 10.1007/s10311-008-0173-y
Authors
Michael Golombok, Shell Exploration and Production Kessler Park 1 2288 GS Rijswijk The Netherlands
Erik Ineke, Shell Exploration and Production Kessler Park 1 2288 GS Rijswijk The Netherlands
Juan-Carlos Rojas Luzardo, Shell Exploration and Production Kessler Park 1 2288 GS Rijswijk The Netherlands
Yuan Yuan He, Shell Exploration and Production Kessler Park 1 2288 GS Rijswijk The Netherlands
Pacelli Zitha, Shell Exploration and Production Kessler Park 1 2288 GS Rijswijk The Netherlands
Matthew S. Ross, Jonathan Verreault, Robert J. Letcher, Geir W. Gabrielsen, and Charles S. Wong Web Release Date: Wed, 27 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es8000147
Xuemei Li, Leo W. Y. Yeung, Sachi Taniyasu, Ming Li, Hongxia Zhang, Dan Liu, Paul K. S. Lam, Nobuyoshi Yamashita, and Jiayin Dai Web Release Date: Wed, 27 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es801453d
Maren Kahle, Ignaz J. Buerge, Andrea Hauser, Markus D. Müller, and Thomas Poiger Web Release Date: Wed, 27 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es8009309
Rafael F. Narváez, Lori Hoepner, Steven N. Chillrud, Beizhan Yan, Robin Garfinkel, Robin Whyatt, David Camann, Frederica P. Perera, Patrick L. Kinney, and Rachel L. Miller Web Release Date: Wed, 27 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es801273h
Pieter van Dillewijn, José L. Couselo, Elena Corredoira, Antonio Delgado, Rolf-Michael Wittich, Antonio Ballester, and Juan L. Ramos Web Release Date: Wed, 27 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es801231w
Barry C. Kelly, Michael G. Ikonomou, Joel D. Blair, and Frank A. P. C. Gobas Web Release Date: Wed, 27 Aug 2008 00:00:00 EDT (Article) DOI: 10.1021/es801275d
Abstract Contamination caused by pesticides in agriculture is a source of environmental poor water quality in some of the European
Union countries. Without treatment or targeted mitigation, this pollution is diffused in the environment. Pesticides and some
metabolites are of increasing concern because of their potential impacts on the environment, wildlife and human health. Within
the context of the European Union (EU) water framework directive context to promote low pesticide-input farming and best management
practices, the EU LIFE project ArtWET assessed the efficiency of ecological bioengineering methods using different artificial
wetland (AW) prototypes throughout Europe. We optimized physical and biological processes to mitigate agricultural nonpoint-source
pesticide pollution in artificial wetland ecosystems. Mitigation solutions were implemented at full-scale demonstration and
experimental sites. We tested various bioremediation methods at seven experimental sites. These sites involved (1) experimental
prototypes, such as vegetated ditches, a forest microcosm and 12 wetland mesocosms, and (2) demonstration prototypes: vegetated
ditches, three detention ponds enhanced with technology of constructed wetlands, an outdoor bioreactor and a biomassbed. This
set up provides a variety of hydrologic conditions, with some systems permanently flooded and others temporarily flooded.
It also allowed to study the processes both in field and controlled conditions. In order to compare the efficiency of the
wetlands, mass balances at the inlet and outlet of the artificial wetland will be used, taking into account the partition
of the studied compound in water, sediments, plants, and suspended solids. The literature background necessary to harmonize
the interdisciplinary work is reviewed here and the theoretical framework regarding pesticide removal mechanisms in artificial
wetland is discussed. The development and the implementation of innovative approaches concerning various water quality sampling
strategies for pesticide load estimates during flood, specific biological endpoints, innovative bioprocess applied to herbicide
and copper mitigation to enhance the pesticide retention time within the artificial wetland, fate and transport using a 2D
mixed hybrid finite element model are introduced. These future results will be useful to optimize hydraulic functioning, e.g.,
pesticide resident time, and biogeochemical conditions, e.g., dissipation, inside the artificial wetlands. Hydraulic retention
times are generally too low to allow an optimized adsorption on sediment and organic materials accumulated in artificial wetlands.
Absorption by plants is not either effective. The control of the hydraulic design and the use of adsorbing materials can be
useful to increase the pesticides residence time and the contact between pesticides and biocatalyzers. Pesticide fluxes can
be reduced by 50â80% when hydraulic pathways in artificial wetlands are optimized by increasing ten times the retention time,
by recirculation of water, and by deceleration of the flow. Thus, using a bioremediation method should lead to an almost complete
disappearance of pesticides pollution. To retain and treat the agricultural nonpoint-source po a major stake for a sustainable
development.
Content Type Journal Article
Category Review
DOI 10.1007/s10311-008-0167-9
Authors
Caroline Gregoire, ENGEES, CEVH BP 61039 1 quai Koch 67070 Strasbourg France
David Elsaesser, University of Koblenz-Landau Institute for Environmental Sciences Fortstrasse 7 76829 Landau Germany
Abstract In this study, the joint acute toxicity of tributyl phosphate (TBP) and triphenyl phosphate (TPP) was investigated using Daphnia magna as the test organism. The median lethal concentrations for TBP and TPP at 24 and 48 h were 5.48 and 0.51 mg/L, 1.17 and 0.089 mg/L,
respectively. When mixed at either equal concentration or various toxic unit ratios, TBP and TPP mixtures displayed an additive
toxicity after both 24- and 48-h exposure. This work suggests that the joint acute toxicity of TBP and TPP towards D. magna can be predicted by calculating the toxic units of mixtures.
Content Type Journal Article
Category Original Paper
DOI 10.1007/s10311-008-0170-1
Authors
Kunde Lin, Zhejiang University of Technology College of Biological and Environmental Engineering 310032 Hangzhou Zhejiang China
Abstract The photodegradation of aqueous solutions containing 0.2 mM methyl parathion has been studied through the optimization of
the [H2O2]/[Fe3+] ratio in a Fe3+/H2O2/UV-C flow system of 1.3 L capacity. The decay kinetics and TOC abatement have been analyzed for the experiments performed
at pH 3.0 and room temperature. All experiments lead to the total methyl parathion destruction after a few minutes, following
a pseudo-first-order decay kinetics. Total mineralization can be reached after 120 min at the optimum ratio found, due to
the synergistic effect of the very oxidizing hydroxyl radical (·OH) produced via the Fenton reagent and the effective photodecarboxylation at 253.7 nm.
Abstract We studied issues of organophosphorus agentsâ analysis. Immobilised enzymeâinhibitors complexes (e.g. acetylcholinesterase-organophosphate
nerve agent) were studied with modified Ellmanâs biochemical method utilised for assessment of acetylcholinesterase activity.
Biochemical reactions are widespread and they are the most frequent used analytical methods for determination of nerve agents.
This modified method is based on the nucleophilic reactions of mono- and bispyridinium aldoximes of a type 2-PAM, MMB-4 and
HI-6, their homologues and isomers with enzymeâinhibitor complexes. The procedure for a gradual analysis of G and V type,
Sarin, Cyclohexylsarin, Soman, Tabun, agent VX and R-33 was proposed in terms of studied nucleophilic substitution reactions
quantification results. This method enables selective determination of these chemical warfare agents. A gradual analysis was
evaluated by statistic method of probabilistic calculus. This type of analysis can be used for assessment of acetylcholinesterase
inhibitors in very low concentrations close to hygienic limits.
Abstract The use of a new material (MFPAN) for copper remotion from aqueous solution is reported. An industrial fibber polymer (FPAN)
was modified by 1,3-dipolar cycloaddition to include tetrazole moieties, as pendant groups. A minimum ratio Cu/MPFAN is required
to enable precipitation, suggesting a pseudo stoichiometry. Both polymer and metal can be quantitatively recovered from the
precipitate by acidification. This recovery ensures a recyclable use of this new material.
Content Type Journal Article
Category Original Paper
DOI 10.1007/s10311-008-0175-9
Authors
Miriam A. Martins Alho, Universidad de Buenos Aires CIHIDECAR (CONICET), Departamento de QuĂmica OrgĂĄnica, Facultad de Ciencias Exactas y Naturales Intendente GĂŒiraldes 2160, Pab. II 3rd floor, Ciudad Universitaria C1428EGA Buenos Aires Argentina
Diego Grassi, Universidad de Buenos Aires CETA (Centro de Estudios Transdisciplinarios del Agua), Facultad de Ciencias Veterinarias Av. ChorroarĂn 280 1427 Buenos Aires Argentina
Alicia FernĂĄndez Cirelli, Universidad de Buenos Aires CETA (Centro de Estudios Transdisciplinarios del Agua), Facultad de Ciencias Veterinarias Av. ChorroarĂn 280 1427 Buenos Aires Argentina
Norma B. DâAccorso, Universidad de Buenos Aires CIHIDECAR (CONICET), Departamento de QuĂmica OrgĂĄnica, Facultad de Ciencias Exactas y Naturales Intendente GĂŒiraldes 2160, Pab. II 3rd floor, Ciudad Universitaria C1428EGA Buenos Aires Argentina
