Enantioselective determination of persistent and partly degradable toxaphene congeners in high trophic level biota.

abstract：:Until the 1990s the 1,1,1-trichloro-bis-2,2'-(4chlorophenyl) ethane (DDT) was sprayed in the walls of the house along the Madeira River basin, Brazilian Amazon, a region well known for its large number of malaria cases. In 1910, Oswaldo Cruz described the presence of malaria in 100% of the population living in some lo...

journal_title：Chemosphere

authors： Azeredo A,Torres JP,de Freitas Fonseca M,Britto JL,Bastos WR,Azevedo E Silva CE,Cavalcanti G,Meire RO,Sarcinelli PN,Claudio L,Markowitz S,Malm O

更新日期：2008-08-01 00:00:00

abstract：:The goals of this work were to isolate and identify an anti-algal compound from extracts of Artemisia annua and study its mode of action on Microcystis aeruginosa. The anti-algal compound was isolated from the extracts using column chromatography and activity-guided fractionation methods. Artemisinin with strong anti-...

journal_title：Chemosphere

authors： Ni L,Acharya K,Hao X,Li S

更新日期：2012-08-01 00:00:00

abstract：:Polybrominated diphenyl ethers (PBDEs) are flame retardants added to a multitude of products to reduce flammability. PBDEs have been widely detected and quantified in biota and humans in many industrialised countries from the Northern Hemisphere. However data concerning the levels of these compounds in the Australian ...

journal_title：Chemosphere

authors： Toms LM,Harden FA,Symons RK,Burniston D,Fürst P,Müller JF

更新日期：2007-06-01 00:00:00

abstract：:Microplastics and pesticides are identified as two environmental pollutants that have an adverse impact on the environment. The knowledge about the combined exposure of pesticides and microplastics may facilitate further assessment of their ecotoxicity. In this study, we investigated joint effects of microplastic and ...

journal_title：Chemosphere

authors： Sun W,Meng Z,Li R,Zhang R,Jia M,Yan S,Tian S,Zhou Z,Zhu W

更新日期：2021-01-01 00:00:00

abstract：:A single microwave extraction procedure was conducted to investigate the bioavailability of rare earth elements (REEs) by using different extractants of 0.05 M EDTA, 0.10 M CH3COOH, 0.10 M HCl, and 0.05 M CaCl2. The experimental conditions of heating time and microwave power were optimized. A microwave power of 60% an...

journal_title：Chemosphere

authors： Lu A,Zhang S,Shan XQ,Wang S,Wang Z

更新日期：2003-12-01 00:00:00

abstract：:Humic substances (HS) including humic acid (HA) and fulvic acid (FA) are ubiquitous in the natural waters. Although numerous studies documented their role in photodegradation of organic pollutants, the competitive effects of photosensitization and light-screening of HS on the photodegradation of pollutants are not yet...

journal_title：Chemosphere

authors： Chen Y,Liu L,Su J,Liang J,Wu B,Zuo J,Zuo Y

更新日期：2017-11-01 00:00:00

abstract：:Polycyclic aromatic hydrocarbons (PAHs), with diverse sources and acute toxicity, are categorized as priority pollutants. Previous studies have stated that the hydrophobic effect controls PAH sorption, but no study has been conducted to quantify the exact contribution of the hydrophobic effect. Considering the well-de...

journal_title：Chemosphere

authors： Peng H,Zhang D,Pan B,Peng J

更新日期：2017-02-01 00:00:00

abstract：:In this study, computational and statistical models were applied to optimize the inherent parameters of an electrochemical decontamination of synozol red. The effect of various experimental variables such as current density, initial pH and concentration of electrolyte on degradation were assessed at Ti/RuO0·3TiO0·7O2 ...

journal_title：Chemosphere

authors： Khan SU,Khan H,Anwar S,Khan S,Boldrin Zanoni MV,Hussain S

更新日期：2020-08-01 00:00:00

abstract：:Glyphosate [N-(phosphonomethyl)-glycine] is a broad-spectrum, non-selective, post-emergence herbicide that is widely used in agricultural. We studied, in vitro, changes in the microbial activity of typical Hapludult and Hapludox Brazilian soils, with and without applied glyphosate. Glyphosate was applied at a rate of ...

journal_title：Chemosphere

authors： Araújo AS,Monteiro RT,Abarkeli RB

更新日期：2003-08-01 00:00:00

abstract：:Humans are exposed to numerous endocrine disruptors on a daily basis, which may interfere with endogenous estrogens, with Di-(2-ethylhexyl) phthalate (DEHP) being one of the most employed. The anterior pituitary gland is a target of 17β-estradiol (E2) through the specific estrogen receptors (ERs) α and β, whose expres...

journal_title：Chemosphere

authors： Pérez PA,Toledo J,Sosa LDV,Peinetti N,Torres AI,De Paul AL,Gutiérrez S

更新日期：2020-11-01 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：:Several studies have demonstrated that gypsum (CaSO4·2H2O) and calcite (CaCO3) can be important hosts of arsenic in contaminated hydrogeological systems. However, the extent to which microbial reducing processes contribute to the dissolution and transformation of carbonate and sulfate minerals and, thereby, to arsenic...

journal_title：Chemosphere

authors： Rios-Valenciana EE,Briones-Gallardo R,Chazaro-Ruiz LF,Lopez-Lozano NE,Sierra-Alvarez R,Celis LB

更新日期：2020-01-01 00:00:00

abstract：:Microalgae cultivation using open cultivation systems requires large area and it is susceptible to contamination as well as weather changes. Meanwhile, the closed systems require large capital investment, and they are susceptible to the build-up of dissolved oxygen. Air-liquid interface culture systems with low water-...

journal_title：Chemosphere

authors： Yap JX,Leo CP,Mohd Yasin NH,Derek CJC

更新日期：2021-01-18 00:00:00

abstract：:The influences of temperature, air flow and the amount of copper chloride upon the types and amount of the toxic emissions such as polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) and polycyclic aromatic hydrocarbons (PAHs) during combustion of polyvinyl chloride (PVC) were investigated. T...

journal_title：Chemosphere

authors： Wang D,Xu X,Zheng M,Chiu CH

更新日期：2002-09-01 00:00:00

abstract：:Phytoremediation is a promising and cost-effective strategy to manage heavy metal polluted sites. In this experiment, we compared simultaneously phytoextraction and phytostabilisation techniques on a Cd and Zn contaminated soil, through monitoring of plant accumulation and leaching. Lolium perenne plants were cultivat...

journal_title：Chemosphere

authors： Lambrechts T,Gustot Q,Couder E,Houben D,Iserentant A,Lutts S

更新日期：2011-11-01 00:00:00

abstract：:The behavior of arsenic (As) in paddy soil is of great interest because rice is an efficient As accumulator, which can result in potential health risks to humans. In this study, we investigated the distribution and translocation of As speciation within the soil-rice system in the presence of Fenton solution (100 μM H2...

journal_title：Chemosphere

authors： Wang S,Li Q,Stubbings WA,Li L,Qin J,Li H

更新日期：2021-01-25 00:00:00

abstract：:In this study, desorption kinetic was determined for decabromodiphenyl ether (BDE209) in a low permeability soil, and the remediation potential of hydroxypropyl-β-cyclodextrin (HPCD) enhanced electrokinetic (EK) technique was investigated. The results indicated that the release rate of BDE209 in slowly and very slowly...

journal_title：Chemosphere

authors： Zhang M,Lu C,Zhang W,Lin K,Huang K

更新日期：2020-11-01 00:00:00

abstract：:A laboratory-scale acidogenic anaerobic sequencing batch reactor was set up to test the effect of pH change on microbial community structure of the reactor biomass and process performance. No immediate performance change on acidogenesis was observed after the pH change. However, as the hydrogenotrophic methanogen popu...

journal_title：Chemosphere

authors： Huang W,Wang Z,Zhou Y,Ng WJ

更新日期：2015-12-01 00:00:00

abstract：:During the last years the pulsed electric field (PEF) method entered several fields of application. A promising application is the decontamination of hospital wastewater effluents, which are loaded with pathogenic and increasingly with antibiotic-resistant bacteria. For this study, Pseudomonas putida suspended in buff...

journal_title：Chemosphere

authors： Gusbeth C,Frey W,Volkmann H,Schwartz T,Bluhm H

更新日期：2009-04-01 00:00:00

abstract：:Mounting evidence suggests there is a link between exposure to synthetic pyrethroids (SPs) and the development of obesity. The information presented in this study suggests that cis-bifenthrin (cis-BF) could activate pregnane X receptor (PXR) mediated pathway and lead to the lipid accumulation of human hepatoma (HepG2)...

journal_title：Chemosphere

authors： Xiang D,Chu T,Li M,Wang Q,Zhu G

更新日期：2018-06-01 00:00:00

abstract：:Source apportionment of fluorine pollution in the regional shallow groundwater at You'xi County, southeast China, has been analyzed by means of monitoring F(-) ion change characteristics in this area. Meanwhile, pollution sources and influencing factors of the shallow groundwater have been uncovered by studying the co...

journal_title：Chemosphere

authors： Lü J,Qiu H,Lin H,Yuan Y,Chen Z,Zhao R

更新日期：2016-09-01 00:00:00

abstract：:A variety of chemicals are capable of provoking mitochondrial dysfunction and thereby contribute to metabolic disorder related effects in wildlife and human. For better identifying new mitochondrial toxicants and assessing mitochondria-related risk, an in-depth understanding of toxic mechanisms and biomarkers should b...

journal_title：Chemosphere

authors： Wei F,Su T,Wang D,Li H,You J

更新日期：2020-09-01 00:00:00

abstract：:The importance of good indoor air quality for the health of the individual was recognized as long as 150 years ago and that period also saw recommendations, which essentially related to questions of ventilation and carbon dioxide. The first evaluation standards for organic and inorganic substances were laid down in th...

journal_title：Chemosphere

authors： Salthammer T

更新日期：2011-03-01 00:00:00

abstract：:While large quantities of studies on microplastics in the marine environment have been widely carried out, few were available in the freshwater environment. The occurrence and characteristics, including composition, abundance, surface texture and interaction with heavy metals, of microplastics in the surface sediments...

journal_title：Chemosphere

authors： Wang J,Peng J,Tan Z,Gao Y,Zhan Z,Chen Q,Cai L

更新日期：2017-03-01 00:00:00

abstract：:Atrazine (ATR), a bio accumulative herbicide is frequently used in agriculture to control unwanted weeds. Due to continuous application, atrazine persists in the environment and causes deleterious impacts including neurotoxicity, hepatotoxicity, and gut microbiota disorders. Therefore, this study for the first time re...

journal_title：Chemosphere

authors： Liu B,Zeng Q,Chen H,Liao J,Bai Y,Han Q,Qiao N,Wang S,Mehmood K,Hussain R,Ahmed BZ,Tang Z,Zhang H,Li Y

更新日期：2021-01-11 00:00:00

abstract：:Arsenic being a naturally-occurring groundwater contaminant is subject to stringent water quality regulations. Coagulation and adsorption are widely used methods to treat arsenic-contaminated water, however, these treatments have been reported to be less efficient for the removal of arsenite (As(III)) than arsenate (A...

journal_title：Chemosphere

authors： Li Y,Bland GD,Yan W

更新日期：2016-05-01 00:00:00

abstract：:Presented are results of a study on accumulation of naturally occurring 210Po and 210Pb in ecological and conventional farming food products in Poland: fruits, vegetables and cereals. The main idea behind this research was to determine the activity concentrations of 210Po and 210Pb in ecological and commercial food as...

journal_title：Chemosphere

authors： Strumińska-Parulska D,Olszewski G

更新日期：2018-01-01 00:00:00

abstract：:The use of column experiments, usually performed to better approximate field conditions, may provide information that is not available from batch experiments. In such experiments heavy metals are often adsorbed until saturation followed by desorption experiments. When the affinity of the metal to soil is high, the ret...

journal_title：Chemosphere

authors： Miretzky P,Muñoz C,Carrillo-Chávez A

更新日期：2006-12-01 00:00:00

abstract：:2,4-Dichlorophenol (2,4-DCP) and 2,6-dichlorophenol (2,6-DCP) undergo oxidation, nitrosation and nitration in the presence of nitrate under UV irradiation. Nitration is favoured under acidic conditions, most likely because HNO(2) is formed on nitrate photolysis. The most likely photonitration pathway is the reaction b...

journal_title：Chemosphere

authors： Vione D,Minero C,Housari F,Chiron S

更新日期：2007-11-01 00:00:00

abstract：:As expanded polystyrene (EPS) has been utilized in soil environments, there is a need to understand interactions between chemical adsorption and the soil system. We conducted a plant bioassay using agricultural crops in a soil system containing a macro-sized EPS (8.3 ± 0.5 mm). When the EPS was collected after cultiva...

journal_title：Chemosphere

authors： Kim SW,Kim D,Chae Y,Kim D,An YJ

更新日期：2019-03-01 00:00:00