Toxicological profile for arsenic

Abstract

A Toxicological Profile for Arsenic, Draft for Public Comment was released in September 2005. This edition supersedes any previously released draft or final profile. CAS#: 7440-38-2"

Low-cost electrochemical detection of arsenic in the groundwater of Guanajuato state, central Mexico using an open-source potentiostat

“…After leaving for ten minutes, the colour on the test strip developed from the reaction of AsH 3 with HgBr was compared against the colour chart provided. The colour bars were defined with the following concentrations: <2, 3,5,7,8,9,10,12,16,20,25,30,40,50, 80, >80, >90, >100 μg L -1 .…”

“…Arsenic detection in surface water or groundwater using cheap and portable methods remains challenging, despite the urgent need to ensure access to arsenic-free water for exposed communities and to monitor drinking water treatments better [1][2][3][4][5]. Arsenic is a potent carcinogen and has been associated with skin lesions such as keratoses [6], fatal internal cancers [6], miscarriage [7], and damage to the gastrointestinal, cardiovascular, neurological, genitourinary, and respiratory systems [8]. Previous studies have linked drinking arsenic-contaminated water to increased mortality, for example 220 and 140 deaths per 100,000 people per year due to bladder cancer and liver cancer respectively in the age 50-69 demographic when exposed to drinking water with >60 μg L -1 As [9], and 60 deaths per 100,000 people per year due to lung cancer when exposed to >35 μg L -1 As [10].…”

Arsenic Contamination in Groundwater: Geochemical Basis of Treatment Technologies

“…As present in various environmental matrices (i.e., water, soil, and air) and food can be attributed to both natural and anthropogenic sources . More importantly, arsenic is the most toxic naturally occurring groundwater contaminant. , In fact, arsenic, particularly in its inorganic form, has been reported as a carcinogen and identified as highly problematic in drinking water. , It has been estimated that at least 150 million people globally drink water with elevated levels of arsenic. , Yet, according to the International Agency for Research on Cancer (IARC), arsenic is a Group 1 human carcinogen. , The U.S. Environmental Protection Agency (U.S. EPA), the U.S. National Toxicology Program, and the American Conference of Industrial Hygienists have also classified arsenic in their list of cancer-causing agents . Aside from lung and skin cancer, , arsenic exposure also leads to ailments of the stomach, intestine, skin, respiratory system, kidney, and central nervous system …”