Mechanism analysis of MnFe2O4/FeSX for removal of Cr(VI) from aqueous phase.

abstract：:Embryolarval lethal effects of Mexel 432, an antifouling agent, were determined in the laboratory during continuous exposure, beginning at fertilization, under various experimental conditions in eight different spawns of the common carp (Cyprinus carpio L). In synthetic water at 24 degrees C and without larval feeding...

journal_title：Ecotoxicology and environmental safety

authors： Arehmouch L,Ghillebaert F,Chaillou C,Roubaud P

更新日期：1999-02-01 00:00:00

abstract：:Insects selectively retain different polychlorinated biphenyls (PCBs) which are then contributed to the food chain. To quantitate specific differences, adult female houseflies (Musca domestica L.) were topically dosed with 0.5 microgram of two structurally distinct PCB congeners (14C-2,2',4,4'-tetraCB or 14C-3,3',4,4'...

journal_title：Ecotoxicology and environmental safety

authors： Saghir SA,Hansen LG

更新日期：1999-02-01 00:00:00

abstract：:The effects of aquatic humic acids on the bioconcentration and acute toxicity of fenpropathrin were evaluated using grass carp, Ctenopharyngodon idellus, in laboratory freshwater systems. The results demonstrated that both bioavailability and acute toxicity decreased in the presence of aquatic humic acid 5 and 10 mg/l...

journal_title：Ecotoxicology and environmental safety

authors： Wu WZ,Xu Y,Schramm K,Kettrup A

更新日期：1999-03-01 00:00:00

abstract：:Atrazine and metolachlor are the two most widely used herbicides in the United States; through non-point-source runoff both herbicides may cause toxicity to aquatic organisms. Toxicity changes were measured for atrazine and metolachlor in surface waters after exposure to simulated sunlight (0, 20, and 40 kJ/m2) using ...

journal_title：Ecotoxicology and environmental safety

authors： Lin YJ,Karuppiah M,Shaw A,Gupta G

更新日期：1999-05-01 00:00:00

abstract：:A performance-based, tiered approach was used to evaluate survival, growth, and reproduction of Daphnia magna in three selected synthetic media: Elendt M4, Elendt M7, and COMBO. Both Elendt M4 and Elendt M7 are high-hardness media currently recommended for Organization for Economic Cooperation and Development (OECD) t...

journal_title：Ecotoxicology and environmental safety

authors： Samel A,Ziegenfuss M,Goulden CE,Banks S,Baer KN

更新日期：1999-05-01 00:00:00

abstract：:Induction of metallothionein (MT) was investigated in a common biomonitor, the dogwhelk Nucella lapillus (shell length: 27.7+/-1.4 mm; wet tissue weight: 667+/-196 mg), during and after exposure to cadmium (Cd) under controlled laboratory conditions (10+/-1 degrees C and 34+/-1 per thousand salinity). The dogwhelks we...

journal_title：Ecotoxicology and environmental safety

authors： Leung KM,Furness RW

更新日期：1999-06-01 00:00:00

abstract：:Brown trout (Salmo trutta) and European minnow (Phoxinus phoxinus) were evaluated as target species to carry out genotoxicity tests. Assessment was made of their relative abundance in wild; their distribution areas; and their sensitivity to heavy metals, intraperitoneally exposing individuals of both species to a low ...

journal_title：Ecotoxicology and environmental safety

authors： Sanchez-Galan S,Linde AR,Garcia-Vazquez E

更新日期：1999-07-01 00:00:00

abstract：:The effects of natural chelators [humic acids (HA), caffeic acid (CFA), p-coumaric acid (PCA), protocatechuic acid (PA), vanillic acid (VA), salicylic acid (SA), and 4-hydroxyacetophenone (HY)] and effects of well-known chelators [EDTA and citric acid (CA)] on the in vitro toxicity of aluminium (Al) were investigated ...

journal_title：Ecotoxicology and environmental safety

authors： Sauvant MP,Pepin D,Guillot J

更新日期：1999-09-01 00:00:00

abstract：:Along with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), 24 unsubstituted polycyclic aromatic hydrocarbons (PAHs) were evaluated for their ability to induce 7-ethoxyresorufin-o-deethylase (EROD) activity in the rainbow trout liver cell line RTL-W1. When the duration and cell density of exposure were increased, the EC(50...

journal_title：Ecotoxicology and environmental safety

authors： Bols NC,Schirmer K,Joyce EM,Dixon DG,Greenberg BM,Whyte JJ

更新日期：1999-09-01 00:00:00

abstract：:Several techniques have been developed to assess the ecotoxicity of contaminated watercourses. Most of these techniques involve chemical alterations of water samples, by diluting it or by adding chelating agents. These changes become particularly severe when assessing the toxicity of samples with very low pH and with ...

journal_title：Ecotoxicology and environmental safety

authors： Lopes I,Gonçalves F,Soares AM,Ribeiro R

更新日期：1999-10-01 00:00:00

abstract：:The river Meuse, located in western Europe, is contaminated by different pollutants, of both organic and inorganic nature. The predominant sources of Meuse contamination in The Netherlands are agricultural activities and pollution derived from urban areas. Crayfish, water, and sediment samples were collected at four d...

journal_title：Ecotoxicology and environmental safety

authors： Schilderman PA,Moonen EJ,Maas LM,Welle I,Kleinjans JC

更新日期：1999-11-01 00:00:00

abstract：:The aim of the present study was to investigate the possible genotoxic effects, exerted by the pyrethroid cypermethrin and by either of the metals cadmium and lead alone or in combination, on bone marrow cell chromosomes in a subchronic experiment. Outbred male Wistar rats were treated per os for 4 weeks in a five-tim...

journal_title：Ecotoxicology and environmental safety

authors： Nehéz M,Lorencz R,Dési I

更新日期：2000-01-01 00:00:00

abstract：:Many microorganisms demonstrate resistance to metals in water, soil and industrial waste. Genes located on chromosomes, plasmids, or transposons encode specific resistance to a variety of metal ions. Some metals, such as cobalt, copper, nickel, serve as micronutrients and are used for redox processes, to stabilize mol...

journal_title：Ecotoxicology and environmental safety

authors： Bruins MR,Kapil S,Oehme FW

更新日期：2000-03-01 00:00:00

abstract：:The aim of these experiments was to find changes in free erythrocyte protoporphyrins (FEP) and in the concentration of endogenous iron in the blood, erythrocytes, serum, liver, kidneys, and spleen of rats, as well as in the dynamics of aluminum concentrations in the serum of rats after oral application of aluminum chl...

journal_title：Ecotoxicology and environmental safety

authors： Nasiadek M,Chmielnicka J

更新日期：2000-03-01 00:00:00

abstract：:Hepatic mitochondrial cytochrome P-450 and b(5) activities were significantly depressed, whereas heme and hemozoin were increased during Plasmodium yoelii infection. Type II, aniline-HCl binding efficacy and polyacrylamide gel electrophoretic profile also depicted impairment of cytochrome P-450 during infection. Howev...

journal_title：Ecotoxicology and environmental safety

authors： Srivastava P,Pandey VC

更新日期：2000-05-01 00:00:00

abstract：:Daphnia magna was exposed to sublethal diazinon concentrations (0.05, 0.1, 0.5, 0.75, and 1.0 ng/L) for 21 days. The algae Nannochloris oculata (5x10(5) cells/mL) was used to feed the daphnids. Chronic toxicity tests were carried out using neonates of F(1) (first brood) and F(1) (third brood) offspring generations fro...

journal_title：Ecotoxicology and environmental safety

authors： Sánchez M,Ferrando MD,Sancho E,Andreu E

更新日期：2000-05-01 00:00:00

abstract：:Dissipation behavior of lindane 20 EC (400 and 800 g a.i./ha) and fenvalerate 0.4% dust (75 and 150 g a.i./ha) applied on chickpea (var. H 208) for controlling pod borer under field conditions during rabi 1994-1995 at pod initiation stage was studied. Grains from lower dose of lindane at harvest contained residues bel...

journal_title：Ecotoxicology and environmental safety

authors： Madan VK,Kumari RS,Naresh JS,Kathpal TS

更新日期：2000-06-01 00:00:00

abstract：:The 96-h LC(50) value of carbaryl was 14.6 microg/mL for the snail Pomacea patula. Organisms were exposed for 72 h to a low sublethal concentration (0.1 of LC(50)) using a semistatic contamination system; bioconcentration and elimination experiments were performed evaluating simultaneously acetylcholinesterase (ACHase...

journal_title：Ecotoxicology and environmental safety

authors： Mora BR,Martínez-Tabche L,Sánchez-Hidalgo E,Hernández GC,Ruiz MC,Murrieta FF

更新日期：2000-06-01 00:00:00

abstract：:Environmental risk limits (ERLs) are derived for di-n-butyl phthalate (DBP) and di(2-ethylhexyl) phthalate (DEHP). The ERLs are derived using data on (eco)toxicology and environmental chemistry. Endpoints used are survival, growth, and reproduction. The resulting ERLs in water are 10 and 0.19 microg/L for DBP and DEHP...

journal_title：Ecotoxicology and environmental safety

authors： van Wezel AP,van Vlaardingen P,Posthumus R,Crommentuijn GH,Sijm DT

更新日期：2000-07-01 00:00:00

abstract：:One method currently available for investigating developmental toxicity in teleost species is the Japanese medaka embryo larval assay (MELA). In the present study, the MELA was modified to evaluate repeated topical exposures to pentachlorophenol (PCP) and p, p'-dichlorodiphenyltrichloroethane (DDT) and to identify sen...

journal_title：Ecotoxicology and environmental safety

authors： Owens KD,Baer KN

更新日期：2000-09-01 00:00:00

abstract：:Growth inhibition tests for copper were carried out on four marine microalgal species: Chlorella autotrophyca, Nannochloris atomus (Chlorophyceae), Phaeodactylum tricornutum (Bacillariophyceae), and Isochrysis aff. galbana (Primnesiophyceae). The test initial cellular densities were reduced to 50 and 10% from the reco...

journal_title：Ecotoxicology and environmental safety

authors： Moreno-Garrido I,Lubián LM,Soares AM

更新日期：2000-10-01 00:00:00

abstract：:Humic acid with hydroxyl-, phenoxyl-, and carboxyl-reactive groups can form coordination compounds with metals. The ion-exchange equilibrium method using Dowex AG 50W-X8, 20-25 mesh Na(+) form was used to determine stability constants of complexes formed between humic acid (isolated from the soil) 50-250 microg ( appr...

journal_title：Ecotoxicology and environmental safety

authors： Pandey AK,Pandey SD,Misra V

更新日期：2000-10-01 00:00:00

abstract：:Effects of dietary cadmium and copper on feeding and growth rates of adult Helix engaddensis snails were studied for a 1-month period. The concentrations of cadmium were 0, 50, 100, 200, 400, and 800 microg Cd/g dry food, while those of copper were 0, 4, 20, 100, 500, and 2500 microg Cu/g dry food. Both metals inhibit...

journal_title：Ecotoxicology and environmental safety

authors： Swaileh KM,Ezzughayyar A

更新日期：2000-11-01 00:00:00

abstract：:Textile plants are very important sources of toxic discharges. The purpose of the research described in this paper was to use bioassays with daphnids to determine the LC50 values of textile wastewater samples taken from different stages of the finishing textile industry. Toxicity due to dyeing, chlorination, and the a...

journal_title：Ecotoxicology and environmental safety

authors： Villegas-Navarro A,Ramírez-M Y,Salvador-S MS,Gallardo JM

更新日期：2001-01-01 00:00:00

abstract：:To evaluate the impact of effluent from a sewage treatment works on fish health, serum chemistry variables were investigated in brown trout (Salmo trutta L.) held in cages (active monitoring) and wild brown trout (passive monitoring). Means of the measured serum parameters of the different treatment groups were close ...

journal_title：Ecotoxicology and environmental safety

authors： Bernet D,Schmidt H,Wahli T,Burkhardt-Holm P

更新日期：2001-02-01 00:00:00

abstract：:The effect of lindane was studied in Cyanobacteria (Anabaena) by estimating its growth pattern, biomass yield, chlorophyll content, and total starch and protein content. The results reveal that exposure of Anabaena with 0.5, 1.0, 1.5, and 2.0 ppm levels of lindane will have drastic effects on biomass production and ph...

journal_title：Ecotoxicology and environmental safety

authors： Suresh Babu G,Hans RK,Singh J,Viswanathan PN,Joshi PC

更新日期：2001-02-01 00:00:00

abstract：:The toxicity of two linear alkylbenzene sulfonate (LAS) homologues (C(10) and C(13)) was evaluated in four marine microalgae (Nannochloropsis gaditana, Tetraselmis suecica, Rhodomonas salina, and Isocrysis galbana), using growth inhibition rate and esterase activity (measured by flow cytometry) as endpoints. The inhib...

journal_title：Ecotoxicology and environmental safety

authors： Hampel M,Moreno-Garrido I,Sobrino C,Lubián LM,Blasco J

更新日期：2001-03-01 00:00:00

abstract：:This paper presents toxicity and uptake data of Limnodrilus hoffmeisteri generated by lead in systems using natural sediments from Ignacio Ramírez reservoir. Lead uptake, hemoglobin concentration, and acetylcholinesterase activity were studied in L. hoffmeisteri exposed to spiked sediments. All assays of lead uptake w...

journal_title：Ecotoxicology and environmental safety

authors： Martinez-Tabche L,Ortega MD,Ramirez Mora B,German Faz C,Lopez Lopez E,Galar Martinez M

更新日期：2001-05-01 00:00:00

abstract：:Juvenile female rainbow trout was exposed for 4.5 months (June to October) to two dilutions of untreated and activated sludge treated whole mill effluent from a pulp mill producing bleached ECF pulp. Two controls were used, on fed ad libitum and a second receiving 0.5% feed of the body weight. All effluent exposed gro...

journal_title：Ecotoxicology and environmental safety

authors： Mattsson K,Lehtinen KJ,Tana J,Härdig J,Kukkonen J,Nakari T,Engström C

更新日期：2001-06-01 00:00:00

abstract：:Colloidal Prussian blue and dissolved hexacyanoferrate ions strongly interact with the surface of goethite (alpha-FeOOH) particles. Whereas Prussian blue is deposited on the surface of goethite as a solid phase with all the properties typical of solid Prussian blue, the hexacyanoferrate ions form initially a layer of ...

journal_title：Ecotoxicology and environmental safety

authors： Scholz F,Schwudke D,Stösser R,Bohácek J

更新日期：2001-07-01 00:00:00