Enzymatic transesterification of waste vegetable oil to produce biodiesel.

abstract：:Human health is adversely affected by potentially toxic elements (PTEs) in the topsoil, entering the bodies via inhalation, ingestion, and dermal contact. To visualize human health risks, we investigated five PTEs (Cd, As, Pb, Hg, and Cr) in 72 farmland topsoil samples from a town in Chongqing City, southwest China. B...

journal_title：Ecotoxicology and environmental safety

authors： Kong F,Chen Y,Huang L,Yang Z,Zhu K

更新日期：2021-01-17 00:00:00

abstract：:Cd(II) is one of the most widespread and toxic heavy metals and seriously threatens plant growth, furthermore negatively affecting human health. For survival from this metal stress, plants always fight with Cd(II) toxicity by themselves or using other external factors. The effects of second metals copper (Cu(II)), zin...

journal_title：Ecotoxicology and environmental safety

authors： Chen Q,Lu X,Guo X,Pan Y,Yu B,Tang Z,Guo Q

更新日期：2018-08-15 00:00:00

abstract：:Experiments were conducted to measure acute lethal response of aquatic insects to hexazinone (Velpar L) and triclopyr ester (Garlon 4) in flow-through laboratory bioassays, and to determine lethal and behavioral effects of these herbicides on insects in outdoor stream channels. No significant mortality (chi 2 P greate...

journal_title：Ecotoxicology and environmental safety

authors： Kreutzweiser DP,Holmes SB,Behmer DJ

更新日期：1992-06-01 00:00:00

abstract：:In this study, feral leaping mullet (Liza saliens) liver microsomal 7-ethoxyresorufin O-deethylase (EROD), and cytosolic glutathione S-transferases (GSTs) activities were investigated using 7-ethoxyresorufin, 1-chloro-2,4-dinitrobenzene (CDNB), and ethacrynic acid (EA) as substrates, respectively. The average EROD act...

journal_title：Ecotoxicology and environmental safety

authors： Sen A,Semiz A

更新日期：2007-11-01 00:00:00

abstract：:Actions and interactions of two abiotic parameters--temperature (18, 21, and 24 degrees C) and photoperiod (8, 12, and 16 hr/day)--on mercury bioaccumulation (HgCl2 and CH3HgCl) by a rooted macrophyte species, Elodea densa, from the sediment source were studied using experimental designs. Comparative analysis of shoot...

journal_title：Ecotoxicology and environmental safety

authors： Maury-Brachet R,Ribeyre F,Boudou A

更新日期：1990-10-01 00:00:00

abstract：:Oxidative stress and defense response in leaves of tomato seedlings exposed to extraneous lead (Pb) at 0-500 mg kg(-1) soil for nearly 2 months were investigated. Superoxide radical (O(2)(-)) was quantified by electron paramagnetic resonance (EPR). Results showed that levels of O(2)(-), malondialdehyde (MDA), carbonyl...

journal_title：Ecotoxicology and environmental safety

authors： Wang C,Wang X,Tian Y,Xue Y,Xu X,Sui Y,Yu H

更新日期：2008-11-01 00:00:00

abstract：:The behavior of lead and cadmium in a protozoan community was studied in order to obtain new data regarding the toxicity and bioaccumulation of these heavy metals. For this purpose, microcosms with different concentrations of the pollutants (without metals, 500 microg Cd and Pb x L(-1) 1,000 microg Cd and Pb x L(-1)) ...

journal_title：Ecotoxicology and environmental safety

authors： Fernandez-Leborans G,Herrero YO

更新日期：2000-11-01 00:00:00

abstract：:Large amount of oil cake is generated during biodiesel production from Jatropha seeds. Although Jatropha oil cake is rich in plant nutrients, presence of toxic phorbol esters restricts the usage of oil cake as a fertilizer. The objective of this study is to evaluate the components and tumor promoting activity of phorb...

journal_title：Ecotoxicology and environmental safety

authors： Nakao M,Hasegawa G,Yasuhara T,Ishihara Y

更新日期：2015-04-01 00:00:00

abstract：:The xenobiotics accumulated in sediments represent a hazard to organisms. In order to study the toxic effects of xenobiotics in organisms, body residue has been proposed as a more relevant dose-metric than the environmental concentration of the chemical. In this study, the benthic oligochaetes Lumbriculus variegatus w...

journal_title：Ecotoxicology and environmental safety

authors： Mäenpää K,Sorsa K,Lyytikäinen M,Leppänen MT,Kukkonen JV

更新日期：2008-01-01 00:00:00

abstract：:The likely protective effects of nitric oxide (NO) against ammonium toxicity were investigated in the submerged macrophyte Hydrilla verticillata. The plants were subjected to ammonium stress (3mM ammonium chloride) in the presence of sodium nitroprusside (SNP, 10 μM), an NO donor. Treatment with SNP significantly incr...

journal_title：Ecotoxicology and environmental safety

authors： Wang C,Zhang SH,Li W,Wang PF,Li L

更新日期：2011-01-01 00:00:00

abstract：:Pearl millet (Pennisetum americanum (L.) K. Schum) has been proven as a potential remediation plant of the pollution caused by atrazine. Plants used in remediation can release root exudates to communicate with rhizosphere microorganisms and accelerate the removal of pollutants in soil. However, the response of pearl m...

journal_title：Ecotoxicology and environmental safety

authors： Zhang Y,Jiang D,Yang C,Deng S,Lv X,Chen R,Jiang Z

更新日期：2021-01-22 00:00:00

abstract：:Although numerous studies have investigated the association between air pollution and hospitalization, few studies have focused on the health effect of air pollution on populations with hypertension. In this study, we conducted a time-series study to investigate the acute adverse effect of six criteria ambient air pol...

journal_title：Ecotoxicology and environmental safety

authors： Song J,Lu M,Lu J,Chao L,An Z,Liu Y,Xu D,Wu W

更新日期：2019-04-15 00:00:00

abstract：:Survival and respiration rates of the bacterial-feeding nematode Cruznema tripartitum after incubation in soil for 48 hr provided a useful bioassay of the presence and concentration level of biologically active toxicants. The assay provided an indication of toxicant activity at sublethal levels, and a means of determi...

journal_title：Ecotoxicology and environmental safety

authors： Lau SS,Fuller ME,Ferris H,Venette RC,Scow KM

更新日期：1997-03-01 00:00:00

abstract：:Exposure to per- and polyfluoroalkyl substances (PFASs) is a major concern due to their widespread occurrence and adverse health outcomes. The possible binding of PFASs to peroxisome proliferator-activated receptors (PPARs) and nuclear receptors raises concerns that PFASs may impact cholesterol levels in human. In thi...

journal_title：Ecotoxicology and environmental safety

authors： Dong Z,Wang H,Yu YY,Li YB,Naidu R,Liu Y

更新日期：2019-05-30 00:00:00

abstract：:Fludioxonil has been proven valuable as a broad-spectrum fungicide. However, there are concerns about its risk posed to non-target organisms in aquatic environments. In this paper, the mechanism, photoproducts transformation and eco-toxicity of fludioxonil during •OH/1O2-initiated process were systematically studied u...

journal_title：Ecotoxicology and environmental safety

authors： Yang J,Wang Z,Lv G,Liu W,Wang Y,Sun X,Gao J

更新日期：2020-07-01 00:00:00

abstract：:Young brown bullhead (Ictalurus nebulosus) were exposed to aminocarb (4-dimethylamino-3-methylphenyl N-methylcarbamate) at lethal and sublethal concentrations and the tissue distribution of total unspecified residues was examined. The concentration of residues in each tissue increased with the concentration of exposur...

journal_title：Ecotoxicology and environmental safety

authors： Richardson GM,Qadri SU

更新日期：1986-10-01 00:00:00

abstract：:In the present study, evidence of the antibacterial effects of silicon carbide (SiC) nanofibers (NFSiC) and nanorods (NRSiC) obtained by combustion synthesis has been presented. It has been shown that the examined bacteria, Pseudomonas putida, could bind to the surface of the investigated SiC nanostructures. The resul...

journal_title：Ecotoxicology and environmental safety

authors： Szala M,Borkowski A

更新日期：2014-02-01 00:00:00

abstract：:A hazard assessment of selenium was conducted for the Animas La Plata Project, a multiple-use water development proposed for Colorado and New Mexico by the United States Bureau of Reclamation. A published protocol for aquatic hazard assessment of selenium was applied to environmental monitoring data to assess current ...

journal_title：Ecotoxicology and environmental safety

authors： Lemly AD

更新日期：1997-06-01 00:00:00

abstract：:Laboratory experiments were undertaken to relate biomarker responses to the toxicities of multi-walled carbon nanotubes (MWCNTs) and sodium pentachlorophenate (PCP-Na), both individually and combined. The acute toxicities of MWCNTs and PCP-Na on earthworm Eisenia fetida were studied through different exposure methods ...

journal_title：Ecotoxicology and environmental safety

authors： Zhang L,Hu C,Wang W,Ji F,Cui Y,Li M

更新日期：2014-05-01 00:00:00

abstract：:The aim of this study was to test the sensitivity of computerized sperm motility analysis in the sea urchin Paracentrotus lividus as the endpoint in toxicity bioassays. The tested matrices were pore water samples collected in an agriculture-impacted Mediterranean lagoon, Lake Varano (Italy). Two standardized bioassays...

journal_title：Ecotoxicology and environmental safety

authors： Fabbrocini A,Di Stasio M,D'Adamo R

更新日期：2010-10-01 00:00:00

abstract：:In this study, we estimated the toxicity risks from river sediments that were affected by multiple pollutants in the Haihe River Basin. We used a range of methods to determine the concentrations, bioavailability, and toxicity of a range of metals and contaminants in sediments and sediment porewater and then assessed t...

journal_title：Ecotoxicology and environmental safety

authors： Zhang C,Shan B,Tang W,Wang C,Zhang L

更新日期：2019-04-30 00:00:00

abstract：:Cadmium (Cd) easily accumulates in tobacco, which endangers public health through Cd exposure from smoking. However, its uptake, translocation, and distribution in tobacco plants during plant development or its response to biochar application are poorly understood. A pot experiment was conducted with tobacco (Yunyan 8...

journal_title：Ecotoxicology and environmental safety

authors： Yao P,Zhou H,Li X,Wei L,Wang J,Zhang S,Ye X

更新日期：2021-01-01 00:00:00

abstract：:Ferric nitrate was employed to modify activated carbon prepared from Iris tectorum during H₃PO₄ activation and ability of prepared activated carbon for removal of tetracycline (TC) was investigated. The properties of the activated carbon samples with or without ferric nitrate, ITAC-Fe and ITAC, were measured by scanni...

journal_title：Ecotoxicology and environmental safety

authors： Li G,Zhang D,Wang M,Huang J,Huang L

更新日期：2013-12-01 00:00:00

abstract：:Aflatoxin B1 poses the greatest risk among the mycotoxins to target-organisms particularly human, however, no studies addressed the neurotoxicity of chronic exposure of aflatoxin. The oral dose level 1/600th of LD50 for 30, 60, and 90 days was used for three aflatoxin groups, respective to negative and vehicle control...

journal_title：Ecotoxicology and environmental safety

authors： Alsayyah A,ElMazoudy R,Al-Namshan M,Al-Jafary M,Alaqeel N

更新日期：2019-10-30 00:00:00

abstract：:Uptake of copper complexes by fish was studied by exposing neon tetras (Paracheirodon innesi) to solutions containing different concentrations of copper complexed to EDTA, diaminoethane, oxalic acid, or tartaric acid, while other copper species were kept at low and constant levels. The distribution of the copper speci...

journal_title：Ecotoxicology and environmental safety

authors： Tao S,Long A,Pan B,Xu F,Dawson R

更新日期：2002-10-01 00:00:00

abstract：:The concentration addition (CA) model has been widely applied to predict mixture toxicity. However, its applicability is difficult to evaluate due to the complexity of interactions among substances. Considering that the concentration-response curve (CRC) of each component of the mixture is closely related to the predi...

journal_title：Ecotoxicology and environmental safety

authors： Wang N,Wang XC,Ma X

更新日期：2015-03-01 00:00:00

abstract：:To detect the impact of pesticides on aquatic organisms, model streams (3m wide, 20 m long) were established in paddy field in Japan. More than 100 species of aquatic organisms were generated in the model streams. Field tests with pretilachlor herbicide and pyridaphenthion insecticide were carried out in the streams f...

journal_title：Ecotoxicology and environmental safety

authors： Takahashi Y,Houjyo T,Kohjimoto T,Takagi Y,Mori K,Muraoka T,Annoh H,Ogiyama K,Funaki Y,Tanaka K,Wada Y,Fujita T

更新日期：2007-06-01 00:00:00

abstract：:Cytochrome P450 1A (CYP1A) expression in fish is used as a biomarker of exposure to organic contaminants, such PAHs, PCBs and dioxins, in the aquatic environment. South American guppy fish Jenynsia multidentata were exposed to the prototypical aryl hydrocarbon receptor (AHR) agonist beta-naphthoflavone (BNF; 1μM) and ...

journal_title：Ecotoxicology and environmental safety

authors： Pinto DP,Chivittz CC,Ferreira RS,Sopezki MS,Zanette J

更新日期：2015-03-01 00:00:00

abstract：:This study explored the suitability of the seahorse Hippocampus reidi (Ginsburg, 1933) for assessing biomarkers of genotoxic effects and its use as a sentinel organism to detect the effects of acute exposure to petroleum hydrocarbons. Fish were exposed to three concentrations of crude oil (10, 20 and 30 g/kg) for 96 h...

journal_title：Ecotoxicology and environmental safety

authors： Delunardo FA,de Carvalho LR,da Silva BF,Galão M,Val AL,Chippari-Gomes AR

更新日期：2015-07-01 00:00:00

abstract：:This study examined the antioxidant responses of Daphnia magna following exposure to different concentrations of the ionic liquid (IL) 1-octyl-3-methylimidazolium bromide and the 50% LC(50) concentrations of methylimidazolium bromide ILs with different alkyl-chain lengths. Activities of antioxidant defense enzymes (su...

journal_title：Ecotoxicology and environmental safety

authors： Yu M,Wang SH,Luo YR,Han YW,Li XY,Zhang BJ,Wang JJ

更新日期：2009-09-01 00:00:00