نتایج جستجو برای: total arsenic
تعداد نتایج: 815483 فیلتر نتایج به سال:
At the present time, the Food and Drug Administration (FDA) accords the highest priority to mercury, lead, cadmium, arsenic, selenium, and zinc in its program on toxic elements in foods. The only regulatory levels for arsenic in foods in the U. S. are the tolerances which have been established for its residues in specified foods, resulting from the application of arsenical pesticides on food an...
Environmental exposure to arsenic represents a serious challenge to humans and other animals. The aim of the present study was to test the protective effect of antioxidant N-acetylcysteine (NAC) either individually or in combination with a chelating agent, meso-2,3-dimercaptosuccinic acid (DMSA), against sodium arsenite oral toxicity in male rats. Five groups were used: control; arsenic group (...
for the presentation at the EU-RL-ISS workshop 7-8 October 2013 (Rome, Italy) Arsenic speciation in food – current status on standardization of methods for specific determination of inorganic arsenic Jens J. Sloth, senior scientist, phd National Food Institute,Technical University of Denmark Division of Food Chemistry Mørkhøj Bygade 19, DK-2860 Søborg Email: [email protected] Arsenic (As) is a u...
We report the results of a screen for genetic association with urinary arsenic metabolite levels in three arsenic metabolism candidate genes, PNP, GSTO, and CYT19, in 135 arsenic-exposed subjects from the Yaqui Valley in Sonora, Mexico, who were exposed to drinking water concentrations ranging from 5.5 to 43.3 ppb. We chose 23 polymorphic sites to test in the arsenic-exposed population. Initial...
A preliminary survey of an arsenic contaminated site from an abandoned copper smelting facility and feasibility study of using solidification/stabilization (S/S) process to treat the contaminant waste were undertaken. It was found that the waste, located in the three-flue gas discharge tunnels, contained 2-40% arsenic. The pH of the contaminated waste is extremely low (ranging from 1.8 to 3.6)....
Inorganic arsenic in rice bran and its products are an order of magnitude higher than in bulk grain.
Rice is more elevated in arsenic than all other grain crops tested to date, with whole grain (brown) rice having higher arsenic levels than polished (white). It is reported here that rice bran, both commercially purchased and specifically milled for this study, have levels of inorganic arsenic, a nonthreshold, class 1 carcinogen, reaching concentrations of approximately 1 mg/kg dry weight, arou...
This study conducted in Bangladesh reports the relationship of clinical complications with nutritional status and the prevalence of leukopenia among arsenic exposed patients living in the rural villages. A total of 115 exposed individuals diagnosed as arsenicosis patients were randomly selected from four known arsenic endemic villages, and age-matched 120 unexposed subjects were enrolled in the...
In this study the effects of various amounts of dietary EDTA (ethylene di amine tetra-acetic acid) supplementation on the amounts of cadmium, mercury, lead and arsenic were evaluated over a growing period of 90 days. This research was conducted according to completely randomized design with 5 treatments including 1(the control), 2, 3, 4 and 5 containing different EDTA concentration of 75, 150, ...
Geothermal energy production In C&Hfomla has been Identified as a major source of arsenic by the California Air Resources Board. New regulations have been Implemented by the State of California, which require Information on ambient levels and emissions of inorganic arsenic. However ,these laws consider only total arsenic and do not lake Into account the potential diHerences In toxicily and perh...
Shallow groundwater is heavily contaminated with arsenic in Bangladesh. The results of a total of 77 samples in two studied upazilas Daudkandi and Begumganj showed elevated levels of arsenic contents in tube well water (range: 0.29-0.71 ppm, n = 6), soils (range: 5.64-29.47 ppm DW, n =16), human scalp hair, (range: 2.41-14.91 ppm DW, n = 8), kachu (range: 0.11-3.89 ppm FW, n = 5), water spinach...
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