نتایج جستجو برای: arsenic

تعداد نتایج: 16970  

2008

• Absorption of arsenic is largely dependent on the solubility and particle size • Concentrations of arsenic or its metabolites in blood, hair, nails and urine may be used as biomarkers of arsenic exposure • Blood arsenic is a useful biomarker only in the case of acute arsenic poisoning or stable chronic high-level exposure • Since the elimination of arsenic takes place mainly via the kidneys, ...

Journal: :international journal of preventive medicine 0
n ghose kk majumdar ak ghose ck saha ak nandy dn guha mazumder

background: chronic arsenic toxicity (arsenicosis) due to drinking of arsenic contaminated ground water is a global problem. however, its treatment is unsatisfactory. methylation of arsenic facilitates its urinary excretion. persons with relatively lower proportion of urinary dimethyl arsenic acid (dma) are found to have at greater risk of developing symptoms of arsenicosis including its compli...

Journal: Pollution 2020

Arsenic is a highly toxic element for human beings, which is generally found in groundwater. Dissolved Arsenic in water can be seen as As+3 and As+5 states. The adsorption process is one of the available methods to remove Arsenic from aqueous solutions. Thus, this papers aims at removing Arsenic (III) from aqueous solutions through adsorption on iron oxide granules. The relation among four inde...

Arsenic is one of the heavy metals and nearly all its compounds, especially organic compounds, are toxic. The wide spectrum of diseases caused by this element has led to evaluation of the toxicity of different arsenic species and identification of the major natural and anthropogenic pollution sources of it in the nature. Mining activities are among the main sources of anthropogenic pollution of...

Journal: :Toxicological sciences : an official journal of the Society of Toxicology 2011
Michael F Hughes Barbara D Beck Yu Chen Ari S Lewis David J Thomas

The metalloid arsenic is a natural environmental contaminant to which humans are routinely exposed in food, water, air, and soil. Arsenic has a long history of use as a homicidal agent, but in the past 100 years arsenic, has been used as a pesticide, a chemotherapeutic agent and a constituent of consumer products. In some areas of the world, high levels of arsenic are naturally present in drink...

2011
Jianwei Gao Jiangping Yu Linsheng Yang

In contrast to arsenic (As) poisoning caused by naturally occurring inorganic arsenic-contaminated water consumption, coal arsenic poisoning (CAP) induced by elevated arsenic exposure from coal combustion has rarely been reported. In this study, the concentrations and distributions of urinary arsenic metabolites in 57 volunteers (36 subjects with skin lesions and 21 subjects without skin lesion...

2007
Piyush Kant Pandey Sushma Yadav Madhurima Pandey

The study reports the use of three biomarkers i.e. total arsenic in hair and nails, total arsenic in blood, and total arsenic in urine to identify or quantify arsenic exposure and concomitant health effects. The main source of arsenic was inorganic exposure through drinking water. The arsenic levels and the health effects were analyzed closely in a family having maximum symptoms of arsenic. Bas...

Background and Objectives: Groundwater sources, as strategic sources of water supply, are of particular importance for human beings. Arsenic is a toxic and carcinogenic contaminant that has been reported to be widely found in groundwater sources. In recent years, adsorption property of nanoparticles has been used to remove arsenic. The present study was performed with the aim of assessing the a...

ژورنال: سلامت و محیط زیست 2011
اسلامی, اکبر, ملکی, افشین,

Backgrounds and Objectives:Water contamination with arsenic has been recognized as a serious problem and its epidemiological problems to human health have been reported. The objective of this study was to explore the possibility modified wheat straw using sodium bicarbonate for removing arsenic from aqueous solution.Materials and Methods: Adsorption process was accomplished in a laboratory-scal...

ژورنال: سلامت و محیط زیست 2008
برقعی, مهدی, تقی پور, حسن, حسنی, امیر حسام, قدیرزاده, ایوب, مسافری, محمد, کمالی کردآباد, زهره,

Background and Objectives: Conducted studies about arsenic have shown that consumption of water contaminated with arsenic can causes different adverse health effects in consumers. World Health Organization (WHO) has enacted 10µg/L arsenic in drinking water as a guideline value. Regarding some reports about arsenic presence in a village of Hashtrood county and related health effects and also con...

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