Effects analysis of time-varying or repeated exposures in aquatic ecological risk assessment of agrochemicals.

abstract：:Biofilms can make good bioindicators and biomarkers, offering a convenient tool to monitor metal contamination in streams that results from mine tailing sites. Biofilm metal content (Cu, Zn, Cd, Pb) as well as diatom diversity and the presence of teratologies (diatom abnormalities) were determined for biofilms from ri...

journal_title：Environmental toxicology and chemistry

authors： Leguay S,Lavoie I,Levy JL,Fortin C

更新日期：2016-06-01 00:00:00

abstract：:Bird eggs are used widely as noninvasive bioindicators for environmental mercury availability. Previous studies, however, have found varying relationships between laying sequence and egg mercury concentrations. Some studies have reported that the mercury concentration was higher in first-laid eggs or declined across t...

journal_title：Environmental toxicology and chemistry

authors： Ou L,Varian-Ramos CW,Cristol DA

更新日期：2015-08-01 00:00:00

abstract：:With increasing application and commercial production, carbon nanotubes (CNTs) will inevitably be released into aquatic environments and affect the transport and toxicity of toxic metals in ecosystems. The present study examined how CNTs affected the biokinetics and toxicity of a toxic metal, cadmium (Cd), in the fres...

journal_title：Environmental toxicology and chemistry

authors： Liu J,Wang WX

更新日期：2015-12-01 00:00:00

abstract：:Methods for the assessment of ecological risks associated with exposure to defined mixtures of toxicants are reviewed and formalized for single-species toxicity. Depending on the modes of action of toxicants in a mixture, these methods apply either the model for concentration additivity (CA) or the model for response ...

journal_title：Environmental toxicology and chemistry

authors： De Zwart D,Posthuma L

更新日期：2005-10-01 00:00:00

abstract：:Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis), a protected endangered species, is the sole freshwater subspecies of finless porpoise, living only in the middle and lower reaches of the Yangtze River, China, and its appended lakes. Its population has decreased sharply to 1,400 because of human act...

journal_title：Environmental toxicology and chemistry

authors： Yang F,Zhang Q,Xu Y,Jiang G,Wang Y,Wang D

更新日期：2008-04-01 00:00:00

abstract：:In the presented study a laboratory experiment was conducted to investigate the transfer of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (PCBs) from environmentally contaminated marine sediment to an infaunal surface deposit-feeding polycha...

journal_title：Environmental toxicology and chemistry

authors： Kono K,Tanaka H,Koyama J

更新日期：2010-07-01 00:00:00

abstract：:Metal cation toxicity to basidiomycete fungi is poorly understood, despite its well-known importance in terrestrial ecosystems. Moreover, there is no reported methodology for the routine evaluation of metal toxicity to basidiomycetes. In the present study, we describe the development of a procedure to assess the acute...

journal_title：Environmental toxicology and chemistry

authors： Mendes LF,Stevani CV

更新日期：2010-02-01 00:00:00

abstract：:Oxygen consumption is indicative of an organism's metabolic state, whereby alterations in respiration rate can result from the presence of different stimuli. Here, we develop a novel approach based on quenched fluorescence oxygen sensing and respirometry method for toxicity screening assays using the nematode Caenorha...

journal_title：Environmental toxicology and chemistry

authors： Schouest K,Zitova A,Spillane C,Papkovsky D

更新日期：2009-04-01 00:00:00

abstract：:Monitoring and assessing the effects of contaminants in the aquatic eco-environment is critical in protecting human health and the environment. The zebrafish has been widely used as a prominent model organism in different fields because of its small size, low cost, diverse adaptability, short breeding cycle, high fecu...

journal_title：Environmental toxicology and chemistry

authors： Dai YJ,Jia YF,Chen N,Bian WP,Li QK,Ma YB,Chen YL,Pei DS

更新日期：2014-01-01 00:00:00

abstract：:As a persistent bioaccumulative compound, perfluorooctanoic acid (PFOA) is found in various ecosystems and receives growing attention. The acute toxicity of PFOA was tested on 2 freshwater microalgae, Chlamydomonas reinhardtii and Scenedesmus obliquus. The 96-h concentration for 50% of maximal effect (EC50) values wer...

journal_title：Environmental toxicology and chemistry

authors： Hu C,Luo Q,Huang Q

更新日期：2014-05-01 00:00:00

abstract：:Estrogenicity of sewage effluents, and related ecotoxicological effects in effluent-receiving environments, have been widely reported over the last 2 decades. However, relatively little attention has been given to other endocrine pathways that may be similarly disrupted by a growing list of contaminants of concern. Fu...

journal_title：Environmental toxicology and chemistry

authors： Roberts J,Bain PA,Kumar A,Hepplewhite C,Ellis DJ,Christy AG,Beavis SG

更新日期：2015-10-01 00:00:00

abstract：:Sorption of chemical substances to nanoparticles (NPs) in the aqueous phase strongly influences NP physicochemisty, and investigations of these complex interactions can provide important insights into the environmental fate of NPs. The objective of the present study was to use differences in copper (Cu) bioavailabilit...

journal_title：Environmental toxicology and chemistry

authors： Patsiou D,Kalman J,Fernandes TF,Henry TB

更新日期：2019-05-01 00:00:00

abstract：:In static renewal experiments, we studied how developmental stage influences the effect of ammonium nitrate on embryonic and larval stages of anuran amphibians. The observed lethal effects caused by ammonium nitrate increased with both concentration and duration of exposure. Significant differences were observed in se...

journal_title：Environmental toxicology and chemistry

authors： Ortiz-Santaliestra ME,Marco A,Fernández MJ,Lizana M

更新日期：2006-01-01 00:00:00

abstract：:Glyphosate-based herbicides are the most commonly used worldwide because they are effective and relatively nontoxic to nontarget species. Unlimited and uncontrolled use of such pesticides can have serious consequences for human health and ecological balance. The present study evaluated the acute toxicity and genotoxic...

journal_title：Environmental toxicology and chemistry

authors： de Brito Rodrigues L,de Oliveira R,Abe FR,Brito LB,Moura DS,Valadares MC,Grisolia CK,de Oliveira DP,de Oliveira GAR

更新日期：2017-07-01 00:00:00

abstract：:Bioaccumulation assessment predominantly relies on the bioconcentration factor (BCF) as the sole decisive metric. The test guideline 305 by the Organisation for Economic Co-operation and Development (OECD) provides the standard procedure for deriving this in vivo fish BCF, which is not only expensive and labor-intensi...

journal_title：Environmental toxicology and chemistry

authors： Kosfeld V,Fu Q,Ebersbach I,Esser D,Schauerte A,Bischof I,Hollender J,Schlechtriem C

更新日期：2020-09-01 00:00:00

abstract：:A modeling study was conducted to examine the distribution of concentrations of the antimicrobial triclosan (2,4,4'-trichloro-2'-hydroxydiphenyl ether) in rivers following discharge from wastewater treatment plants (WWTPs). Most uses of triclosan are disposed of down residential drains and ultimately reach WWTPs. A mo...

journal_title：Environmental toxicology and chemistry

authors： Reiss R,Mackay N,Habig C,Griffin J

更新日期：2002-11-01 00:00:00

abstract：:Ecotoxicology research on polychlorinated biphenyl (PCB) mixtures has focused principally on short-term effects on reproduction, growth, and other physiological endpoints. Latent cognitive effects from early life exposure to low-level PCBs were examined in an avian model, the European starling (Sturnus vulgaris). Thir...

journal_title：Environmental toxicology and chemistry

authors： Zahara AR,Michel NL,Flahr LM,Ejack LE,Morrissey CA

更新日期：2015-11-01 00:00:00

abstract：:Most toxicity tests investigate constant concentrations of a chemical. Concentrations of many compounds in the environment are dynamic, however, and individuals may be more sensitive to pulses of a chemical initiated at specific points during development. Realistic toxicity tests are important to accurately assess the...

journal_title：Environmental toxicology and chemistry

authors： Earl JE,Whiteman HH

更新日期：2009-06-01 00:00:00

abstract：:We measured concentrations of polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs) in northern leopard frogs collected from the Green Bay ecosystem and explored the catalytic activity of hepatic cytochrome P450-associated monooxygenase (P450 enzyme) as ...

journal_title：Environmental toxicology and chemistry

authors： Huang YW,Karasov WH,Patnode KA,Jefcoate CR

更新日期：1999-10-01 00:00:00

abstract：:Dissolved organic carbon (DOC) plays a key role in determining the environmental fate of semivolatile organic environmental contaminants. The goal of the present study was to develop a method using commercially available hardware to rapidly characterize the sorption properties of DOC in water samples. The resulting me...

journal_title：Environmental toxicology and chemistry

authors： Ripszam M,Haglund P

更新日期：2015-02-01 00:00:00

abstract：:The avian embryo is an excellent model for testing adverse developmental effects of environmental chemicals as well as uptake and movement of xenobiotics within the egg compartments. Before incubation at embryonic day 0, 14 C 3,3',4,4'-tetrachlorobiphenyl (14 C PCB 77) was injected into Japanese quail eggs either onto...

journal_title：Environmental toxicology and chemistry

authors： Dean KM,Baltos LD,Marcell AM,Bohannon MEB,Iwaniuk AN,Ottinger MA

更新日期：2018-01-01 00:00:00

abstract：:Equilibrium distribution models of hydrophobic neutral partitioning of the perfluorinated carboxylic and sulfonic acids were shown, without the need for any physical chemical properties, to successfully predict the sediment-water distribution (D(SW) ) directly from independently measured equilibrium tissue distributio...

journal_title：Environmental toxicology and chemistry

authors： Webster EM,Ellis DA

更新日期：2011-10-01 00:00:00

abstract：:A hybrid model based on the positive matrix factorization (PMF) model and the health risk assessment model for assessing risks associated with sources of perfluoroalkyl substances (PFASs) in water was established and applied at Dianchi Lake to test its applicability. The new method contains 2 stages: 1) the sources of...

journal_title：Environmental toxicology and chemistry

authors： Xu J,Shi GL,Guo CS,Wang HT,Tian YZ,Huangfu YQ,Zhang Y,Feng YC,Xu J

更新日期：2018-01-01 00:00:00

abstract：:Polycyclic aromatic hydrocarbons (PAHs, n = 36) were measured in the gas and particle phases in the atmosphere and the dissolved and particle phases in the waters of the New York-New Jersey Harbor Estuary, USA, during a weeklong intensive field campaign in July 1998. Mean total (gas + particulate) phenanthrene and pyr...

journal_title：Environmental toxicology and chemistry

authors： Gigliotti CL,Brunciak PA,Dachs J,Glenn TR 4th,Nelson ED,Totten LA,Eisenreich SJ

更新日期：2002-02-01 00:00:00

abstract：:Octanol-water partition coefficients (KOW ) are widely used in fate and effects modeling of chemicals. Still, high-quality experimental KOW data are scarce, in particular for very hydrophobic chemicals. This hampers reliable assessments of several fate and effect parameters and the development and validation of new mo...

journal_title：Environmental toxicology and chemistry

authors： Jonker MT

更新日期：2016-06-01 00:00:00

abstract：:The radiotracer technique was used to assess the influences of sediment-metal contact time or aging (up to two years) on the bioavailability and geochemical speciation of Cd and Zn in sediments. Bioavailability was quantified by measuring the assimilation efficiency of metals in two deposit-feeding invertebrates (sipu...

journal_title：Environmental toxicology and chemistry

authors： Zhong H,Wang WX

更新日期：2006-10-01 00:00:00

abstract：:Previous studies in Bayou Bartholomew, Arkansas, USA, indicated significant relationships between the individual health of fish sampled from 13 sites and specific biochemical responses. Evaluation of several biochemical endpoints in 1994 indicated the bioavailable occurrence of either polychlorinated biphenyl (PCB) co...

journal_title：Environmental toxicology and chemistry

authors： Schlenk D,Sapozhnikova Y,Baquirian JP,Mason A

更新日期：2002-10-01 00:00:00

abstract：:In plant tissues, xenobiotics often are conjugated with natural constituents such as sugars, amino acids, glutathione, and malonic acid. Usually, conjugation processes result in a decrease in the reactivity and toxicity of xenobiotics by increasing the water solubility and polarity of conjugates, and reducing their mo...

journal_title：Environmental toxicology and chemistry

authors： Laurent F,Canlet C,Debrauwer L,Pascal-Lorber S

更新日期：2007-11-01 00:00:00

abstract：:A method is presented for extending the target lipid model (TLM) of narcotic toxicity to polar narcotic chemicals. The proposed polyparameter TLM extends the applicability of the TLM by including polar compounds and removing explicit chemical class corrections. The validity of the model is tested using a data set of 1...

journal_title：Environmental toxicology and chemistry

authors： Kipka U,Di Toro DM

更新日期：2009-07-01 00:00:00

abstract：:We raised embryos and tadpoles of green frogs (Rana clamitans melanota) and leopard frogs (R. pipiens) in situ along a contamination gradient in the Fox River/Green Bay ecosystem (WI, USA). Differences in exposure were reflected by significant positive regressions between concentrations in sediment and in frogs of pol...

journal_title：Environmental toxicology and chemistry

authors： Karasov WH,Jung RE,Langenberg SV,Bergeson TL

更新日期：2005-04-01 00:00:00