Estimating the combined toxicity by two-step prediction model on the complicated chemical mixtures from wastewater treatment plant effluents.

abstract：:Most of the public literature and available guidance documents on the conduct of freshwater whole-sediment toxicity identification and evaluations (TIEs) detail the use of test organisms and amending agents that are readily available in North America. These commonly used test organisms and the supported amending agent...

journal_title：Environmental toxicology and chemistry

authors： Mehler WT,Keough MJ,Pettigrove V

更新日期：2017-09-01 00:00:00

abstract：:Leeches are widespread, found in many freshwater habitats, and have diverse dietary habits. Despite their close phylogenetic relationships to Mollusca, a phylum with species affected by exogenous estrogens, it is unclear whether Hirudinea may also be impacted. A whole-lake experiment was done at the Experimental Lakes...

journal_title：Environmental toxicology and chemistry

authors： Kidd KA,Graves SD,McKee GI,Dyszy K,Podemski CL

更新日期：2020-08-01 00:00:00

abstract：:The degradation rate of sodium fluoroacetate (SFA) was assessed in a laboratory microcosm study incorporating 3 New Zealand soil types under different temperature (5 °C, 10 °C, or 20 °C) and soil moisture (35% or 60% water holding capacity) conditions using guideline 307 from the Organisation for Economic Co-operation...

journal_title：Environmental toxicology and chemistry

authors： Northcott G,Jensen D,Ying L,Fisher P

更新日期：2014-05-01 00:00:00

abstract：:OECD (Organisation for Economic Co-operation and Development) Guideline 203, Fish Acute Toxicity Test, states that the test should be performed using at least five concentrations in a geometric series with a separation factor not exceeding 2.2, with at least seven fish per concentration. However, the efficiency of thi...

journal_title：Environmental toxicology and chemistry

authors： Rufli H,Springer TA

更新日期：2011-04-01 00:00:00

abstract：:Spatio-temporal factors strongly influence the population dynamics of animals; thus there have been calls to integrate these factors in environmental impact assessment of toxic compounds. To date, methodological difficulties have probably prevented this union. However, new modeling techniques that could help are avail...

journal_title：Environmental toxicology and chemistry

authors： Topping CJ,Odderskaer P

更新日期：2004-02-01 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：:There is growing concern over the effects of increased salinization on freshwater organisms, which are largely unknown for unionid mussels. Adult and larval Elliptio complanata were exposed to low-level salt concentrations to determine the effects on mussel survival, physiology, and reproduction. Adults were exposed t...

journal_title：Environmental toxicology and chemistry

authors： Blakeslee CJ,Galbraith HS,Robertson LS,St John White B

更新日期：2013-12-01 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：:A model for risk assessment was built for simultaneous, congener-specific PCB bioaccumulation from sediment to fish to otters (Lutra lutra). Toxic equivalence factors (TEFs) were used to sum individual congeners in otters to a toxic equivalent concentration (TEQ) relative to 2,3,7,8-tetrachlorodibenzo-p-dioxin. Microb...

journal_title：Environmental toxicology and chemistry

authors： Traas TP,Luttik R,Klepper O,Beurskens JE,Smit MD,Leonards PE,van Hattum AG,Aldenberg T

更新日期：2001-01-01 00:00:00

abstract：:A series of atomistic simulations was performed to assess the ability of the Schulten dissolved organic matter (DOM) molecule, a well-established model humic molecule, to reproduce the physical and chemical behavior of natural humic substances. The unhydrated DOM molecule had a bulk density value appropriate to humic ...

journal_title：Environmental toxicology and chemistry

authors： Sutton R,Sposito G,Diallo MS,Schulten HR

更新日期：2005-08-01 00:00:00

abstract：:Currently toxicity data for iron (Fe) in seawater are limited; furthermore, these data are of poor quality as a result of the importance of Fe solubility in test solutions being overlooked. The present study characterized the solubility and lability of Fe(III) in seawater and then examined the effects of Fe(III) on th...

journal_title：Environmental toxicology and chemistry

authors： Leigh-Smith J,Reichelt-Brushett A,Rose AL

更新日期：2018-04-01 00:00:00

abstract：:The 2 most abundant polycyclic aromatic hydrocarbons (PAHs) measured in Deepwater Horizon crude oil, naphthalene and phenanthrene, and their associated homologs have both been shown to be acutely toxic in fish. Although fish have a relatively high metabolic capacity for PAHs, hydroxylated PAH (OH-PAH) derivatives form...

journal_title：Environmental toxicology and chemistry

authors： Pulster EL,Main K,Wetzel D,Murawski S

更新日期：2017-11-01 00:00:00

abstract：:Atrazine is a herbicide used most frequently in North America, but it usually is encountered in mixtures of agrochemicals. Few atrazine exposure studies have been conducted using mixed pesticides; therefore, little data are available to suggest reliable means of discerning effects attributable to atrazine. The common ...

journal_title：Environmental toxicology and chemistry

authors： Lytle TF,Lytle JS

更新日期：2005-05-01 00:00:00

abstract：:Native freshwater mussels (family Unionidae) are among the most imperiled faunal groups in the world. Factors contributing to the decline of mussel populations likely include pesticides and other aquatic contaminants; however, there is a paucity of data regarding the toxicity of even the most globally distributed pest...

journal_title：Environmental toxicology and chemistry

authors： Bringolf RB,Cope WG,Mosher S,Barnhart MC,Shea D

更新日期：2007-10-01 00:00:00

abstract：:The desorption behavior of benzidine from Lake Macatawa (Holland, MI, USA) sediment was investigated in this study using batch solvent extraction method. Seven solvents were tested as the extracting reagents: Deionized water (DI), calcium chloride in DI (CaCl2), sodium hydroxide in DI (NaOH), acetonitrile (ACN), a mix...

journal_title：Environmental toxicology and chemistry

authors： Chen S,Nyman MC

更新日期：2005-12-01 00:00:00

abstract：:Adult African clawed frogs (Xenopus laevis) were collected from a corn-growing region (CGR) and a non-corn-growing region (NCGR) with different exposure profiles for atrazine and related triazines. Physical, chemical, and biological parameters from the catchment areas were also measured. Frogs were surveyed for possib...

journal_title：Environmental toxicology and chemistry

authors： Hecker M,Giesy JP,Jones PD,Jooste AM,Carr JA,Solomon KR,Smith EE,Van der Kraak G,Kendall RJ,Du Preez L

更新日期：2004-08-01 00:00:00

abstract：:Populations of Cascades frogs (Rana cascadae) have declined precipitously in the Mount Lassen area, but remain abundant in the other half of their California range in the Klamath Mountains. To evaluate the role of contaminants in Cascade frog declines, we sampled sediment and frog tadpole tissue at 31 sites where Casc...

journal_title：Environmental toxicology and chemistry

authors： Davidson C,Stanley K,Simonich SM

更新日期：2012-08-01 00:00:00

abstract：:The relative sensitivity of 17 noncrop plant species from Oregon's Willamette Valley was determined in response to glyphosate, tribenuron methyl (tribenuron), and fluazifop-p-butyl (fluazifop) herbicides. For glyphosate, Elymus trachycaulus, Festuca arundinacea, Madia elegans, Potentilla gracilis, and Ranunculus occid...

journal_title：Environmental toxicology and chemistry

authors： Olszyk D,Blakeley-Smith M,Pfleeger T,Lee EH,Plocher M

更新日期：2013-11-01 00:00:00

abstract：:The bioaccumulation of current use pesticides (CUPs) and stable isotopes of carbon and nitrogen were investigated in vegetation-caribou-wolf food chain in the Bathurst region (Nunavut, Canada). Volumetric bioconcentration factors (BCF(v)) in vegetation were generally greatest for dacthal (10-12) ≥ endosulfan sulfate (...

journal_title：Environmental toxicology and chemistry

authors： Morris AD,Muir DC,Solomon KR,Teixeira C,Duric M,Wang X

更新日期：2014-09-01 00:00:00

abstract：:We coupled intensive population monitoring with collection of blood samples from 383 nesting Pacific common eiders (Somateria mollisima v-nigrum) at two locations in Alaska (USA) from 2002 to 2004. We investigated annual, geographic, and within-season variation in blood concentrations of lead and selenium; compared ex...

journal_title：Environmental toxicology and chemistry

authors： Wilson HM,Flint PL,Powell AN

更新日期：2007-07-01 00:00:00

abstract：:During laboratory and field studies, a fraction of contaminants in soils or sediments often is observed to be highly resistant to desorption. This desorption-resistant fraction may have significant effects on long-term fate and exposure of soil/ sediment-bound contaminants in particular, causing much reduced availabil...

journal_title：Environmental toxicology and chemistry

authors： Chen W,Cong L,Hu H,Zhang P,Li J,Feng Z,Kan AT,Tomson MB

更新日期：2008-01-01 00:00:00

abstract：:New techniques and software have enabled ubiquitous use of structure-activity relationships (SARs) in the pharmaceutical industry and toxicological sciences. We review the status of SAR technology by using examples to underscore the advances as well as the unique technical challenges. Applying SAR involves two steps: ...

journal_title：Environmental toxicology and chemistry

authors： Tong W,Welsh WJ,Shi L,Fang H,Perkins R

更新日期：2003-08-01 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：:We examined the subcellular partitioning of zinc (Zn) in Daphnia magna both under acute and chronic exposures. In the acute Zn toxicity tests, the daphnids were exposed to different Zn concentrations for 48 h or to one lethal concentration (1,000 microg/L) for different durations (time to death for up to 47 h). Signif...

journal_title：Environmental toxicology and chemistry

authors： Wang WX,Guan R

更新日期：2010-08-01 00:00:00

abstract：:Loewe's additivity (concentration addition) is a well-known model for predicting the toxic effects of chemical mixtures under the additivity assumption of toxicity. However, from the perspective of chemical risk assessment and/or management, it is important to identify chemicals whose toxicities are additive when pres...

journal_title：Environmental toxicology and chemistry

authors： Takeshita J,Seki M,Kamo M

更新日期：2016-07-01 00:00:00

abstract：:The aquatic ecological environment is being threatened from overuse of pesticides, and the aquatic toxicity toward rainbow trout (Oncorhynchus mykiss) plays a significant role in environmental risk assessment of agrochemicals. In the present study, 2 norm index formulas were developed, from which several norm descript...

journal_title：Environmental toxicology and chemistry

authors： Jia Q,Liu T,Yan F,Wang Q

更新日期：2020-02-01 00:00:00

abstract：:Storm events lead to agricultural and urban runoff, to mobilization of contaminated particulate matter, and to input from combined sewer overflows into rivers. We conducted time-resolved sampling during a storm event at the Ammer River, southwest Germany, which is representative of small river systems in densely popul...

journal_title：Environmental toxicology and chemistry

authors： Müller ME,Zwiener C,Escher BI

更新日期：2021-01-01 00:00:00

abstract：:Glyphosate is a widely used broad-spectrum postemergent herbicide used for weed control in both agricultural and nonagricultural settings. Spray drift of glyphosate can pose a risk to nontarget terrestrial plants and plant communities outside the intended area of application, but the lack of a well-established predict...

journal_title：Environmental toxicology and chemistry

authors： Cederlund H

更新日期：2017-11-01 00:00:00

abstract：:Pacific tree frog (Hyla regilla) tadpoles were collected throughout the Sierra Nevada mountain range, California, USA, in 1996 and 1997 and analyzed for the presence of polychlorinated biphenyls (PCBs) and toxaphene. Whole-tadpole sigma PCB levels ranged from 244 ng/g (wet wt) at lower elevations on the western slope ...

journal_title：Environmental toxicology and chemistry

authors： Angermann JE,Fellers GM,Matsumura F

更新日期：2002-10-01 00:00:00

abstract：:Although conventional wastewater treatment technologies are effective at removing many contaminants of emerging concern (CECs) from municipal wastewater, some contaminants are not removed efficiently. Ozonation may be a treatment option for reducing the concentrations of recalcitrant CECs in wastewater, but this proce...

journal_title：Environmental toxicology and chemistry

authors： Maya N,Evans J,Nasuhoglu D,Isazadeh S,Yargeau V,Metcalfe CD

更新日期：2018-01-01 00:00:00