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Showing 1-29 of 29 results for "131857" within Papers
I Chu et al.
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 21(3), 229-242 (1986-06-01)
Control and phenobarbital (PB) or polychlorinated biphenyl (PCB) pretreated rats were given single oral doses of 14C-1,2,4,5-tetrachlorobenzene (TCB) at 30 or 300 mg/kg b.w. Urine and feces were collected daily for the determination of 14C-content. Five animals per group were
Hun-Young Wee et al.
Journal of hazardous materials, 155(1-2), 1-9 (2007-12-07)
Palladium-catalyzed hydrodehalogenation (HDH) was applied for destroying 1,2,4,5-tetrachlorobenzene (TeCB) in mixtures of water and ethanol. This investigation was performed as a critical step in the development of a new technology for clean-up of soil contaminated by halogenated hydrophobic organic contaminants.
Haiyan Zhang et al.
Environmental science & technology, 48(3), 1525-1531 (2014-01-10)
Although hexachlorobutadiene (HCBD) was recently proposed as a candidate persistent organic pollutant (POP) under the Stockholm Convention, information about its environmental levels and distributions is still very limited. In this work, HCBD was determined in the sewage sludge from 37
Reproductive toxicology. 1,2,4,5-Tetrachlorobenzene.
Environmental health perspectives, 105 Suppl 1, 351-352 (1997-02-01)
I Chu et al.
Journal of toxicology and environmental health, 13(4-6), 777-786 (1984-01-01)
Adult male rats were given orally single doses of 14C-labeled 1,2,3,4-, 1,2,3,5-, or 1,2,4,5-tetrachlorobenzene (TCB) at 10 mg/kg body weight, and were housed in individual metabolism cages to collect urine and feces for radioassay. For 1,2,3,4- and 1,2,3,5-TCB, approximately 46-51%
I Chu et al.
Drug and chemical toxicology, 7(2), 113-127 (1984-01-01)
Tetrachlorobenzenes (TCB) are industrial chemicals which have been used as intermediates for chemical synthesis and for electrical insulation. Recently TCB residues have been found in Great Lakes fish. The present study was designed to determine the subchronic toxicity of these
Yue-Hong Shu et al.
Huan jing ke xue= Huanjing kexue, 30(3), 743-747 (2009-05-13)
Sediment desorption batch technique experiments were conducted to study the influence of different types of natural organic matter (NOM) of sediment, initial solid-phase solute loading levels and temperatures on the desorption rates of 1,2,4,5-tetrachlorobenzene. A 4-parameter biphasic first-order kinetic model
Oxygen consumption of juvenile rainbow trout (Oncorhynchus mykiss) exposed to sublethal concentrations of 1,2,4,5-tetrachlorobenzene and tetrachloroguaiacol.
R Yang et al.
Bulletin of environmental contamination and toxicology, 59(3), 479-485 (1997-09-01)
S Beil et al.
Journal of bacteriology, 180(21), 5520-5528 (1998-10-29)
The TecA chlorobenzene dioxygenase and the TodCBA toluene dioxygenase exhibit substantial sequence similarity yet have different substrate specificities. Escherichia coli cells producing recombinant TecA enzyme dioxygenate and simultaneously eliminate a halogen substituent from 1,2,4,5-tetrachlorobenzene but show no activity toward benzene
Xia Zhou et al.
Archives of environmental contamination and toxicology, 57(1), 32-41 (2008-10-01)
Eleven chlorobenzenes (CBs) in surface water and sediments of Tonghui River, a main urban drainage river of Beijing in China, were determined in October 2003, January 2004, and April 2006. CBs were widely detected and the summation operatorCB concentrations in
C Siklósi et al.
Dermatosen in Beruf und Umwelt. Occupation and environment, 29(2), 40-42 (1981-01-01)
In answering the question as to what role possible metabolites of hexachlorobenzene play in the procreation of toxic hexachlorobenzene porphyria in rats, both pure hexachlorobenzene and different mixtures were fed to them. In each case 20% of the hexachlorobenzene was
Motoki Terashima et al.
Chemosphere, 57(6), 439-445 (2004-09-08)
Solubilizing abilities of aggregates of humic acid (HA) to chlorinated benzenes (CBs) were investigated by means of the apparent water solubility enhancement. Both the water solubilities of 1,4-dichlorobenzene (DCB) and 1,2,4,5-tetrachlorobenzene (TeCB) linearly increased with increasing concentration of HA above
Christopher M Hurdzan et al.
Bulletin of environmental contamination and toxicology, 87(3), 209-214 (2011-06-21)
The acute, lethal potency of the 1,2,3,4-, 1,2,4,5- and 1,2,3,5-tetrachlorobenzene isomers was compared in the terrestrial and aquatic oligochaetes Eisenia andrei and Tubifex tubifex. 1,2,4,5-TeCB was neither lethal, nor produced any perceptible adverse effects, at lipid normalized concentrations predicted to
Lin Xiao et al.
Environmental science & technology, 41(8), 2750-2755 (2007-05-31)
We observed that the presence of transition metal ion, Ag+, Cu2+, or Fe3+, at a concentration of 3 mg L(-1) increases sorption of two nonpolar hydrophobic organic compounds (HOCs), phenanthrene (PHEN), and 1,2,4,5-tetrachlorobenzene (TeCB) by 1.5-4 times to Gram-negative bacteria
Wenxia Liu et al.
Environmental science and pollution research international, 20(8), 5569-5576 (2013-02-27)
Polychlorinated diphenyl ether (PCDE) has attracted great attention recently as an important type of environmental pollutant. The influence of iron and copper oxides on formation of PCDEs was investigated using laboratory-scale flow reactors under air and under nitrogen at 350
D L Gustafson et al.
Toxicological sciences : an official journal of the Society of Toxicology, 53(2), 245-252 (2000-03-04)
Of the twelve different chlorobenzene isomers, a thorough evaluation of carcinogenicity has only been assessed on monochlorobenzene, 1,2-, and 1,4-dichlorobenzene, and hexachlorobenzene. In the studies presented here, we measured the ability of 1,4-dichlorobenzene (DCB), 1,2,4,5-tetrachlorobenzene (TeCB), pentachlorobenzene (PeCB), and hexachlorobenzene
D L Gustafson et al.
Cancer letters, 129(1), 39-44 (1998-08-26)
1,2,4,5-Tetrachlorobenzene (TeCB) and 1,4-dichlorobenzene (DCB) are important environmental contaminants that have been used extensively for a variety of industrial applications. Limited data are available in the literature regarding the carcinogenicity of TeCB. DCB has been shown to cause renal adenocarcinomas
K T Kitchin et al.
Environmental research, 32(1), 134-144 (1983-10-01)
1,2,4,5-Tetrachlorobenzene (TCB) is an industrial intermediate used in the production of 2,4,5-trichlorophenoxyacetic acid. This herbicide contains trace quantities of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Because of possible maternal hepatic or reproductive effects of this uncharged, low-molecular weight, lipophilic chlorinated benzene 0, 30, 100
Problems in determining the water solubility of organic compounds.
A Bharath et al.
Bulletin of environmental contamination and toxicology, 33(2), 133-137 (1984-08-01)
Hongmei Hu et al.
Journal of chromatographic science, 52(5), 375-382 (2013-05-07)
A simple, rapid, sensitive and high throughput method is described, based on solid-phase disk extraction (SPDE) and gas chromatography-electron capture detection, for the determination of chlorobenzens (CBs) in water samples. The proposed SPDE sample pretreatment method was initially optimized and
Yanling Qiu et al.
Chemosphere, 75(1), 78-82 (2009-01-21)
An existing substitution reaction method was improved as part of a system to measure the persistency of selected chemicals in the environment by evaluating their chemical reactivity. Hexachlorobenzene (HCB), pentachlorobenzene, 1,2,4,5-tetrachlorobenzene and 1,2,4-trichlorobenzene were selected as model compounds. Sodium methoxide
I Chu et al.
Journal of toxicology and environmental health, 11(4-6), 663-677 (1983-04-01)
Groups of 10 male and 10 female rats were dosed orally with 1,2,3,4-, 1,2,4,5-, or 1,2,3,5-tetrachlorobenzene (TCB) at levels that ranged from 200 to 4000 mg/kg, and were observed clinically for 14 d. LD50 values for 1,2,3,4-, 1,2,4,5-, and 1,2,3,5-TCB
Daniel Giesen et al.
Environmental toxicology and chemistry, 31(5), 1136-1142 (2012-03-21)
To meet the goals of Registration, Evaluation, Authorisation, and Restriction of Chemicals (REACH) as formulated by the European Commission, fast and resource-effective tools are needed to predict the toxicity of compounds in the environment. We developed quantitative structure-activity relationships (QSARs)
Xiaoqin Nie et al.
Journal of environmental sciences (China), 25(3), 473-478 (2013-08-08)
The feasibility of the rapid degradation of hexachlorobenzene (HCB) by micron-size silver (Ag)/iron (Fe) particles was investigated. Ag/Fe particles with different ratios (0, 0.05%, 0.09%, 0.20%, and 0.45%) were prepared by electroless silver plating on 300 mesh Fe powder, and
G S Ward et al.
Journal of toxicology and environmental health, 8(1-2), 225-240 (1981-07-01)
Flow-through, acute (96-h), and early life stage (28-d after hatch) toxicity tests were performed with eight chemical on a saltwater fish, sheepshead minnows (Cyprinodon variegatus). Chemical effects on survival, growth, and development were determined. Maximum acceptable toxicant concentrations (MATCs) were
S Beil et al.
European journal of biochemistry, 247(1), 190-199 (1997-07-01)
The bacterium, Burkholderia (previously Pseudomonas) sp. strain PS12, reported earlier to degrade 1,2,4-trichlorobenzene is shown here to utilize also 1,2,4,5-tetrachlorobenzene (Cl4-benzene) as a growth substrate. To investigate the possibility that this organism attacks Cl4-benzene with a chlorobenzene dioxygenase which concomitantly
Barry C Kelly et al.
Science (New York, N.Y.), 317(5835), 236-239 (2007-07-14)
Substances that accumulate to hazardous levels in living organisms pose environmental and human-health risks, which governments seek to reduce or eliminate. Regulatory authorities identify bioaccumulative substances as hydrophobic, fat-soluble chemicals having high octanol-water partition coefficients (K(OW))(>/=100,000). Here we show that
S Kacew et al.
Teratology, 29(1), 21-27 (1984-02-01)
Three tetrachlorobenzene (TCB) congeners (1,2,3,4- 1,2,3,5-, and 1,2,4,5-) were administered daily by gavage to pregnant Sprague-Dawley rats at levels of 50, 100, or 200 mg/kg from day 6 through day 15 of gestation. Mothers were sacrificed on day 21 of
A A Toropov et al.
European journal of medicinal chemistry, 43(4), 714-740 (2007-07-17)
Simplified molecular input line entry system (SMILES) has been utilized in constructing quantitative structure-property relationships (QSPR) for octanol/water partition coefficient of vitamins and organic compounds of different classes by optimal descriptors. Statistical characteristics of the best model (vitamins) are the
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