نتایج جستجو برای: arsenic

تعداد نتایج: 16970  

ژورنال: سلامت و محیط زیست 2015
اسماعیلی ساری, عباس, ریاحی بختیاری, علیرضا , سلگی, عیسی, هادی پور, مهرداد ,

Background and Objectives: Arsenic contamination is of great environmental concern due to its toxic effects as a carcinogen. In order to assess soil arsenic contamination and its distribution patterns, surface soil samples collected from the urban areas of Arak were analyzed. Materials and Methods: Totally, 62 surface soil samples were collected from depth of 0–20 cm of different locations incl...

2010
ROBERT W. DOUGHERTY WAYNE BINNS

ARSENIC poisoning in livestock may be caused by arsenic trioxide (white arsenic), paris green, sodium arsenite, and sodium arsenate. Arsenic has been a common cause of accidental and criminal poisoning of animals because it often is used to kill insects, parasites, weeds, and rodents and as a tonic for animals. Arsenic compounds usually are palatable to animals, especially when they are hungry ...

Journal: :Environmental science. Processes & impacts 2013
Maeve M Moriarty Iris Koch Kenneth J Reimer

Total arsenic concentrations and the chemical form, or species, of arsenic were determined in amphibians (Rana clamitans and Bufo americanus) collected from a site with elevated arsenic concentrations in Nova Scotia, Canada. Frog legs had significantly elevated total arsenic concentrations at a contaminated site when compared with a nearby background site and a calculation of the estimated dail...

2015
Karin S Engström Marie Vahter Tony Fletcher Giovanni Leonardi Walter Goessler Eugen Gurzau Kvetoslava Koppova Peter Rudnai Rajiv Kumar Karin Broberg

Exposure to inorganic arsenic increases the risk of basal cell carcinoma (BCC). Arsenic metabolism is a susceptibility factor for arsenic toxicity, and specific haplotypes in arsenic (+3 oxidation state) methyltransferase (AS3MT) have been associated with increased urinary fractions of the most toxic arsenic metabolite, methylarsonic acid (MMA). The aim of this study is to elucidate the associa...

2017
M. M. Hasibuzzaman Shakhawoat Hossain Md. Shofikul Islam Atiqur Rahman Adiba Anjum Faruk Hossain Nayan Chandra Mohanto Md. Rezaul Karim Md. Mominul Hoque Zahangir Alam Saud Hideki Miyataka Seiichiro Himeno Khaled Hossain

Chronic exposure to arsenic is associated with increased morbidity and mortality from cardiovascular disease (CVD); however, plausible biomarker for early prediction and the underlying mechanism of arsenic-related CVD have not yet been clearly understood. Endothelial dysfunction plays a central role in the development of CVD. We hypothesized that endothelial damage or dysfunction is an importan...

Journal: :Bulletin of environmental contamination and toxicology 2007
Jonathan Okechukwu Okonkwo

The status and the distribution of arsenic in soils from a disused cattle dip were determined. Elevated total arsenic levels (1,033-1,369 mg/L) were detected in the soils. Significant difference (p < 0.05) between the values for the soils obtained from the contaminated sites and control site (0.15 mg/L) was observed. The level of total arsenic decreased with increase in depth. The peak total ar...

Journal: :Environmental Health Perspectives 1977
E A Crecelius

The concentrations of four chemical species of arsenic in urine were observed with time, after ingestion of three different chemical species of arsenic. The arsenic-rich substances ingested, including arsenite-rich wine, arsenate-rich drinking water, and crab meat which contained organo-arsenic compounds. After ingestion of arsenite-rich wine, approximately 10% of the arsenic was excreted as ar...

Journal: :Environmental Health Perspectives 1977
T J Smith E A Crecelius J C Reading

First void urine samples were collected from copper smelter workers exposed to inorganic arsenic and from unexposed controls. Arsenic compounds (As (III), As (V), methylarsonic acid and dimethylarsinic acid) in these samples were analyzed by selective volatilization as arsines with determination of arsenic by plasma excitation emission spectrometry. On the day preceding the urine sample collect...

2006
Ana Navas-Acien Ellen K. Silbergeld Robin A. Streeter Jeanne M. Clark Thomas A. Burke Eliseo Guallar

Chronic arsenic exposure has been suggested to contribute to diabetes development. We performed a systematic review of the experimental and epidemiologic evidence on the association of arsenic and type 2 diabetes. We identified 19 in vitro studies of arsenic and glucose metabolism. Five studies reported that arsenic interfered with transcription factors involved in insulin-related gene expressi...

2010
David A. Kalman

Accuracy in trace level clinical or biomedical analyses is of increasing importance as populationbased surveillance is more widely used to address issues of nutritional requirements, environmental exposures, and epidemiological outcomes. Among the uses of such surveillance, evaluation of community exposures from a local arsenic pollution source is one example. Urinary biological monitoring is a...

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