نتایج جستجو برای: bromodichloromethane

تعداد نتایج: 90  

2007
Eduarda Regina Carvalho Nelson Consolin Filho Everaldo Carlos Venancio N. O. Osvaldo Luiz H. C. Mattoso Ladislau Martin-Neto

The detection of the carcinogenic trihalomethanes (THM) in public water supplysystems using low-cost equipment has become an essential feature, since these compoundsmay be generated as by-products of water-treatment processes. Here we report on a sensorarray that extends the concept of an "electronic tongue" to detect small amounts ofbromoform, bromodichloromethane and dibromochloromethane, wit...

Journal: :Environmental science & technology 2008
C Andrew James Gang Xin Sharon L Doty Stuart E Strand

Cytochrome P450 2E1 (CYP2E1) is a key enzyme in the mammalian metabolism of several low molecular weight volatile organic compounds (VOCs), such as trichloroethylene (TCE), vinyl chloride (VC), carbon tetrachloride (CT), benzene, chloroform, and bromodichloromethane (BDCM), which are all common environmental pollutants that pose risks to human health. We have developed a transgenic tobacco (Nic...

Journal: :Journal of occupational and environmental medicine 2013
Zorimar Rivera-Núñez J Michael Wright

OBJECTIVES We examined the relationship between adverse reproductive outcomes and exposure to several disinfection by-products including haloacetic acids (HAAs), trihalomethanes (THMs), and the brominated THMs sum (THMBr). METHODS Second- and third-trimester exposure scores were estimated from quarterly town-level average THM and HAA concentration data and were examined relative to mean birth...

Journal: :Fundamental and applied toxicology : official journal of the Society of Toxicology 1997
M G Narotsky R A Pegram R J Kavlock

Several halocarbons have been shown to cause full-litter resorption (FLR) in Fischer-344 rats when administered orally in corn oil. Since halocarbons often occur as contaminants of drinking water, we sought to determine the influence of the vehicle, aqueous versus lipid, on the developmental toxicity of two of these agents. In separate assays, bromodichloromethane (BDCM) and carbon tetrachlorid...

2005
Mireille B. Toledano Mark J. Nieuwenhuijsen Nicky Best Heather Whitaker Peter Hambly Cornelis de Hoogh John Fawell Lars Jarup Paul Elliott

We investigated the association between total trihalomethanes (TTHMs) and risk of stillbirth and low and very low birth weight in three water regions in England, 1992-1998; associations with individual trihalomethanes (THMs) were also examined. Modeled estimates of quarterly TTHM concentrations in water zones, categorized as low (< 30 microg/L), medium (30-59 microg/L), or high (> or = 60 micro...

Journal: :Chemosensors 2023

Drinking water treatment plants (DWTP) use chlorination as an oxidation stage in the first step of processes used to eliminate natural organic matter (NOM) responsible for formation 2-methylisoborneol (2-MIB) and Geosmin (GM), which produce odor taste water. However, give rise disinfectant toxic subproducts, such trihalomethanes (THMs). In this work, a headspace solid-phase microextraction coup...

Journal: :The Science of the total environment 2013
Kamilla M S Hansen Raissa Zortea Aurelia Piketty Sergio Rodriguez Vega Henrik Rasmus Andersen

Medium pressure UV is used for controlling the concentration of combined chlorine (chloramines) in many public swimming pools. Little is known about the fate of other disinfection by-products (DBPs) in UV treatment. Photolysis by medium pressure UV treatment was investigated for 12 DBPs reported to be found in swimming pool water: chloroform, bromodichloromethane, dibromochloromethane, bromofor...

Journal: :Environmental Health Perspectives 1993
M M Lipsky M Skinner C O'Connell

We have been investigating the actions of chloroform (CHCl3) and bromodichloromethane (BDCM) in rat kidney after different routes of exposure. Male F344 rats were exposed by gavage with corn oil or water as the diluting vehicle. All experiments lasted 30 days with gavage exposures 5 days per week for 4 weeks (20 doses). All animals were injected IP with bromodeoxyuridine (BrdU) 3 times over a 6...

Journal: :Environmental Health Perspectives 1982
A E Munson L E Sain V M Sanders B M Kauffmann K L White D G Page D W Barnes J F Borzelleca

This study evaluated the subchronic toxicity of selected halomethanes which are drinking water contaminants. The compounds studied were trichloromethane, bromodichloromethane, dibromochloromethane and tribromomethane. Subchronic 14-day gavage studies were performed with the use of doses encompassing one-tenth the LD50 for the compounds. A 90-day gavage study of one of the compounds, trichlorome...

Journal: :Mutation research 2002
Vincent R Torti Alison J Cobb Victoria A Wong Byron E Butterworth

Bromodichloromethane (BDCM) is commonly present in trace amounts in drinking water as a disinfection by-product. BDCM has been shown to be carcinogenic in mice and rats when given by gavage at relatively high doses. Genotoxic activity as well as induced regenerative cell proliferation may contribute to the carcinogenic potential of BDCM. The purpose of the current studies was to evaluate the ab...

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