abstract：:A series of cobalt containing alumina pillared zirconium phosphate materials have been prepared by ion exchange or by impregnation, and fully characterised. The catalytic behaviour of these materials in the selective catalytic reduction of NO by propane, in excess of oxygen, at temperatures ranging between 350 and 550...

journal_title：Chemosphere

authors： Hernández-Huesca R,Braos-García P,Mérida-Robles J,Maireles-Torres P,Rodríguez-Castellón E,Jiménez-López A

更新日期：2002-07-01 00:00:00

abstract：:An advanced oxidation treatment, UV/H2O2, was applied to an azo dye, Hispamin Black CA, widely used in the Peruvian textile industry. Rates of color removal and degradation of the dye have been evaluated. A strongly absorbing solution was completely decolorized after 35 min of treatment, and after 60 min an 82% reduct...

journal_title：Chemosphere

authors： Cisneros RL,Espinoza AG,Litter MI

更新日期：2002-07-01 00:00:00

abstract：:To investigate the regional cycle of aerosols and their ionic constituents, three field intensive campaigns were conducted during fall and winter of 1997 and spring of 1998. The concentrations of most ionic species were found to decrease significantly across fall, winter, and spring such that the sum for all cation (a...

journal_title：Chemosphere

authors： Kim KH,Lee M,Lee G,Kim YP,Youn YH,Oh JM

更新日期：2002-07-01 00:00:00

abstract：:The importance of the interaction between chemistry and dynamics in the upper troposphere and lower stratosphere for chemical species like ozone is investigated using two chemistry-climate models and a Lagrangian trajectory model. Air parcels from the upper troposphere, i.e. regions of lightning and aircraft emissions...

journal_title：Chemosphere

authors： Grewe V,Reithmeier C,Shindell DT

更新日期：2002-06-01 00:00:00

abstract：:Corrosion and runoff from zinc-coated materials and outdoor structures is an important source for the dispersion of zinc in the environment. Being part of a large inter-disciplinary research project, this study presents the bioavailability of zinc in runoff water immediately after release from the surface of 15 differ...

journal_title：Chemosphere

authors： Heijerick DG,Janssen CR,Karlèn C,Wallinder IO,Leygraf C

更新日期：2002-06-01 00:00:00

abstract：:An improved dynamic coupled column liquid chromatographic (DCCLC) technique for determining water solubility data of hydrophobic compounds is presented. The technique is based on pumping water through a thermostated generator column in order to generate emulsion-free, saturated aqueous solutions of the compound under ...

journal_title：Chemosphere

authors： Reza J,Trejo A,Vera-Avila LE

更新日期：2002-06-01 00:00:00

abstract：:Groundwater is a complex mixture of chemicals that is naturally variable. Current legislation in the UK requires that groundwater quality and the degree of contamination are assessed using chemical methods. Such methods do not consider the synergistic or antagonistic interactions that may affect the bioavailability an...

journal_title：Chemosphere

authors： Dewhurst RE,Wheeler JR,Chummun KS,Mather JD,Callaghan A,Crane M

更新日期：2002-05-01 00:00:00

abstract：:The effect of the pesticide glyphosate (GPS) on adsorption processes of copper onto three soils of different characteristics has been studied. Cu adsorption decreases in general with increasing GPS concentration in solution, due principally to the lower equilibrium pHs, although this is not the only variable affecting...

journal_title：Chemosphere

authors： Morillo E,Undabeytia T,Maqueda C,Ramos A

更新日期：2002-05-01 00:00:00

abstract：:Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and coplanar biphenyls (Co-PCBs) were determined in Japanese human adipose tissues. Temporal trends were assessed by comparing data collected during 1970-1971, 1994-1996 and 2000. Mean TEQ levels of PCDD/Fs in human adipose tissue showe...

journal_title：Chemosphere

authors： Choi JW,Miyabara Y,Hashimoto S,Morita M

更新日期：2002-05-01 00:00:00

abstract：:This paper describes a study of oxidation of diethylene glycol (DEG) by ozone and modified Fenton process (hydrogen peroxide and ferric salt mixture) in aqueous solution. Both oxidation processes were able to oxidize relatively high concentrations of DEG effectively. DEG reacted primarily through hydroxyl radical prod...

journal_title：Chemosphere

authors： Turan-Ertas T,Gurol MD

更新日期：2002-04-01 00:00:00

abstract：:The Al-tolerant cultivar TAM202 and the Al-sensitive cultivar TAM 105 of winter wheat (Triticum aestivum L.) were exposed to 0, 50, 75, 100 or 150 microM of Al. The absorption of Al by wheat, the growth of root, several key enzymes concerned with C, N and P metabolism, as well as key constituents of antioxidant system...

journal_title：Chemosphere

authors： Dong B,Sang WL,Jiang X,Zhou JM,Kong FX,Hu W,Wang LS

更新日期：2002-04-01 00:00:00

abstract：:The goal of this study was to characterize body burdens of polychlorinated dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) in three groups of Siberians living in the Irkutsk Region of Russia. These groups included firefighters exposed to a mixture of toxic substances exting...

journal_title：Chemosphere

authors： Schecter A,Pavuk M,Amirova DA,Grosheva EI,Päpke,Ryan JJ,Adibi J,Piskac AL

更新日期：2002-04-01 00:00:00

abstract：:The concentrations of heavy metals (Fe, Zn, Cu, Cd, Ni, Pb, Cr, As) were determined in seven seaweeds of environmental and commercial relevance (Ulva rigida C. Ag., Gracilaria gracilis (Stackhouse) Steentoft, L. Irvine and Farnham, Porphyra leucosticta Thuret, Grateloupia doryphora (Montagne) Howe., Undaria pinnatifid...

journal_title：Chemosphere

authors： Caliceti M,Argese E,Sfriso A,Pavoni B

更新日期：2002-04-01 00:00:00

abstract：:For a long period, polybrominated flame retardants are under discussion because of the formation of polybrominated dibenzo-p-dioxins (PBDD)/dibenzofurans (PBDF) (PBDD/F) in case of thermal stress. Concerning polymer linked tetrabromobisphenol A (TBBP A), formation of PBDD/F was commonly presumed to be sterically hinde...

journal_title：Chemosphere

authors： Wichmann H,Dettmer FT,Bahadir M

更新日期：2002-04-01 00:00:00

abstract：:Black carbon (BC) contents were measured in recent sediments in five high altitude remote alpine lakes, i.e. Lake Krisko Sup., Lake Ledvica, Lake Planina, Lake Krn and Lovrensko Lake, and the eutrophic subalpine Lake Bled in Slovenia to follow the history of atmospheric pollution of fossil fuel and local biomass burni...

journal_title：Chemosphere

authors： Muri G,Cermelj B,Faganeli J,Brancelj A

更新日期：2002-03-01 00:00:00

abstract：:Sediments from two lakes, the meso-to-eutrophic Volvi and the hypertrophic Koronia, located in N. Greece were examined on the basis of P-fractionation. In both lakes, the rank order of P-fractions was HCl-P > NaOH-P > BD-P > NH4Cl-P. The loosely sorbed phosphorus (NH4Cl-P) represented < 1% of the sedimentary inorganic...

journal_title：Chemosphere

authors： Kaiserli A,Voutsa D,Samara C

更新日期：2002-03-01 00:00:00

abstract：:High levels of the commonly used, effective bactericide Triclosan was found in three out of five randomly selected human milk samples. It was also found in the bile of fish exposed to municipal wastewater and in wild living fish from the receiving waters of the three wastewater treatment plants. ...

journal_title：Chemosphere

authors： Adolfsson-Erici M,Pettersson M,Parkkonen J,Sturve J

更新日期：2002-03-01 00:00:00

abstract：:Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were determined in some additives widely employed as binder and anti-caking agents in feedstuffs, such as kaolin, bentonite, zeolite, etc. with an special attention on sepiolite samples. Owing to their physico-chemical properties, the ...

journal_title：Chemosphere

authors： Abad E,Llerena JJ,Sauló J,Caixach J,Rivera J

更新日期：2002-03-01 00:00:00

abstract：:The construction in Constanti (Catalonia, Spain) of a new hazardous waste incinerator (HWI), which is the first one in Spain, finished in 1999. In order to determine the temporal variation (1996-1998) in the concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) in the vicinity of the ne...

journal_title：Chemosphere

authors： Schuhmacher M,Agramunt MC,Rodriguez-Larena MC,Díaz-ferrero J,Domingo JL

更新日期：2002-03-01 00:00:00

abstract：:Pathways from chlorinated phenols as precursors to PCDD/Fs are discussed with focus on the effect of (poly)chlorination on thermochemistry and rate in the displacement of chlorine from a chlorophenol molecule by a (chloro)phenoxy radical (reaction (A) as a key example). Through measurements on the respective methyleth...

journal_title：Chemosphere

authors： Louw R,Ahonkhai SI

更新日期：2002-03-01 00:00:00

abstract：:The photoelectrochemical degradation of methylene blue in aqueous solution was investigated with three-dimensional electrode-photocatalytic reactor. It was found that the methylene blue could be degraded more efficiently by photoelectrochemical process than by photocatalytic oxidation or electrochemical oxidation alon...

journal_title：Chemosphere

authors： An TC,Zhu XH,Xiong Y

更新日期：2002-02-01 00:00:00

abstract：:Although microbial transformations via cometabolism have been widely observed, the few available kinetic models of cometabolism have not adequately addressed the case of inhibition from both the growth and nongrowth substrates. The present study investigated the degradation kinetics of self-inhibitory growth (phenol) ...

journal_title：Chemosphere

authors： Hao OJ,Kim MH,Seagren EA,Kim H

更新日期：2002-02-01 00:00:00

abstract：:Some environmental monitoring programs have reported increasing levels of certain polybrominated diphenyl ether (PBDE) isomers in aquatic biota and in human breast milk. The commercial PBDE products are known as penta-, octa-, and deca-brominated diphenyl ethers (PeBDE, OBDE and DBDE, respectively). Aside from the cur...

journal_title：Chemosphere

authors： Wenning RJ

更新日期：2002-02-01 00:00:00

abstract：:During an earlier study, polybrominated diphenyl ethers were detected at high concentrations in fish and sediments downstream of a manufacturing site in NE England. We have now undertaken analysis of 14 tri- to heptabromodiphenyl ether congeners in tissues of two species of marine top predators exposed to these compou...

journal_title：Chemosphere

authors： Law RJ,Allchin CR,Bennett ME,Morris S,Rogan E

更新日期：2002-02-01 00:00:00

abstract：:The tissue-blood partition coefficients for a physiologically based pharmacokinetic (PBPK) model were determined, and the concentrations of 17 congeners of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in tissues in Japanese people were estimated using the model. According to the PBPK m...

journal_title：Chemosphere

authors： Maruyama W,Yoshida K,Tanaka T,Nakanishi J

更新日期：2002-02-01 00:00:00

abstract：:In order to study the biological activity of soil organic matter mobilized by agrarian (Zea mays: cultivars Mytos and Samantha) and forest (Picea abies Karst. and Pinus sylvestris L.) root exudates, two different soils, an Eutric Cambisol (EC) and a Rendzic Leptosol (RL), were considered. Soil organic matter extracts ...

journal_title：Chemosphere

authors： Nardi S,Sessi E,Pizzeghello D,Sturaro A,Rella R,Parvoli G

更新日期：2002-02-01 00:00:00

abstract：:The paper assesses extensive data of PCDD/F measurements on flue gas emissions from thermal processes, including, e.g. municipal solid waste incinerators (MSWIs), combustors of wood and industrial waste, coal fired powerplants and boilers, ferro and non-ferro processes. Numerous investigators have conducted laboratory...

journal_title：Chemosphere

authors： Everaert K,Baeyens J

更新日期：2002-01-01 00:00:00

abstract：:An acid-washing process was studied on a laboratory scale to extract the bulk of arsenic(V) from a highly contaminated Kuroboku soil (Andosol) so as to minimize the risk of arsenic to human health and the environment. The sorption and desorption behavior of arsenic in the soil suggested the possibility of arsenic leac...

journal_title：Chemosphere

authors： Tokunaga S,Hakuta T

更新日期：2002-01-01 00:00:00

abstract：:The decomposition of gas-phase trichloroethene (TCE) in air streams by direct photolysis, the UV/TiO2 and UV/O3 processes was studied. The experiments were carried out under various UV light intensities and wavelengths, ozone dosages, and initial concentrations of TCE to investigate and compare the removal efficiency ...

journal_title：Chemosphere

authors： Shen YS,Ku Y

更新日期：2002-01-01 00:00:00

abstract：:Acute toxicity of 30 offshore E & P (Exploration and Production) chemicals was measured using the three standard test organisms Daphnia magna (freshwater cladoceran), Acartia tonsa (marine copepod) and Skeletonema costatum (marine diatom alga). Test chemicals included 20 water-soluble and 10 (partially) non-soluble pr...

journal_title：Chemosphere

authors： Sverdrup LE,Fürst CS,Weideborg M,Vik EA,Stenersen J

更新日期：2002-01-01 00:00:00

abstract：:EROD (ethoxyresorufin-O-deethylase) activity was determined in winter flounder, a sediment-inhabiting and non-migratory fish species, living near a pulp and paper mill in Newfoundland in relation to temperature, gender, sexual maturity, and lesions in the liver. Samples of liver were taken from fish captured by SCUBA ...

journal_title：Chemosphere

authors： Khan RA,Payne JF

更新日期：2002-01-01 00:00:00

abstract：:In order to assess the influence of the aromatic substitution on the ability of a soil bacterial strain, Arthrobacter sp. N2, to degrade phenylurea herbicides, biotransformation assays were performed in mineral medium with resting cells of this soil bacterial strain on three phenylurea herbicides (diuron, chlorotoluro...

journal_title：Chemosphere

authors： Tixier C,Sancelme M,Aït-Aïssa S,Widehem P,Bonnemoy F,Cuer A,Truffaut N,Veschambre H

更新日期：2002-01-01 00:00:00

abstract：:Dioxins (PCDD + PCDF) and polychlorinated biphenyl (PCB) are potentially hazardous compounds and have structural similarity to thyroid hormones. Our research group on "Dioxins and PCB in Human Milk" was organized in 1997 and has been active for the past three years. We collected breast milk from 80 mothers living in T...

journal_title：Chemosphere

authors： Matsuura N,Uchiyama T,Tada H,Nakamura Y,Kondo N,Morita M,Fukushi M

更新日期：2001-12-01 00:00:00

abstract：:A value of simultaneously extracted metal to acid-volatile sulfide (SEM-AVS) can provide important information regarding metal availability in anaerobic sediment. SEM and AVS concentrations were obtained by the cold-acid purge-and-trap technique during spring and summer at six locations along the Mississippi River flo...

journal_title：Chemosphere

authors： Grabowski LA,Houpis JL,Woods WI,Johnson KA

更新日期：2001-11-01 00:00:00

abstract：:Spray drift and edge-of-field runoff are regarded as important routes of nonpoint-source pesticide input into aquatic surface waters, with current regulatory risk assessment in Europe focussing largely on spray drift. However, the two routes of entry had rarely been compared directly in the same catchment. To this end...

journal_title：Chemosphere

authors： Schulz R

更新日期：2001-11-01 00:00:00

abstract：:1-Hydroxypyrene (1-HP) is a carcinogenic and slightly water-soluble polycyclic aromatic hydrocarbon. Ecotoxicity and mutagenicity of 1-HP and its photoproducts, and the effect of Mn2+ and Cu2+ on their mutagenicity were measured with microbial assay in this study. The assay includes spread plate counting, direct count...

journal_title：Chemosphere

authors： Hwang HM,Shi X,Ero I,Jayasinghe A,Dong S,Yu H

更新日期：2001-11-01 00:00:00

abstract：:Our goal was to create a photodegradation model based on the META expert system [G. Klopman, M. Dimayuga, J. Talafous, J. Chem. Inf. Comput. Sci. 34 (1994a) 1320-1325]. This requires the development of a dictionary of photodegradation pathways. Equipped with such a dictionary, we found that META successfully predicts ...

journal_title：Chemosphere

authors： Sedykh A,Saiakhov R,Klopman G

更新日期：2001-11-01 00:00:00

abstract：:Solvent-extractable organic compounds in the rain and snow collected at local cities in the mountainous region in central Japan, were analyzed by GC/MS and GC. Pinonaldehyde (2,2-dimethyl-3-acetyl-cyclobutyl-ethanal), an atmospheric reaction product of alpha-pinene, was detected in the rain and snow for the first time...

journal_title：Chemosphere

authors： Satsumabayashi H,Nishizawa H,Yokouchi Y,Ueda H

更新日期：2001-11-01 00:00:00

abstract：:Many hydrochemical studies on chemical formation of shallow ground water have been reported as results of water-rock interaction, and contamination of paleo-brine or human activities, whereas the preliminary formation of precipitation source in the recharged region has not been established yet. The purpose of this res...

journal_title：Chemosphere

authors： Anazaw K,Ohmori LH

更新日期：2001-11-01 00:00:00

abstract：:Reversed-phase high-performance liquid chromatography (RP-HPLC) in both, isocratic and gradient elution mode (stationary phase: LiChrospher 100 RP-18; mobile phase: water/methanol or water/acetonitrile) was used for a renewed determination of octanol/water partition coefficients (Kow) of selected tetrachlorobenzyltolu...

journal_title：Chemosphere

authors： Paschke A,Manz M,Schüürmann G

更新日期：2001-11-01 00:00:00