RT Report
T1 Arsenic: Environmental Health Criteria 18
A1 United Nations Environment Programme, 
A1 World Health Organization, 
A1 International Labour Organisation, 
K1 arsenic
K1 environmental health
K1 chemical analysis
K1 chemical
K1 pollution
K1 air pollution
K1 water pollution
K1 carcinogen
K1 cancer
K1 cadmium
K1 lead
K1 selenium
SN 92 4 154078 8
YR 1981
FD 1981
LK https://wedocs.unep.org/handle/20.500.11822/29304
UL https://wedocs.unep.org/handle/20.500.11822/29304
NO Arsenic is a ubiquitous element with metalloid properties. Its chemistry is complex and there are many different compounds of both inorganic and organic arsenic. In nature, it is widely distributed in a number of minerals, mainly as the arsenides of copper, nickel, and iron, or as arsenic sulfide or oxide. In water, arsenic is usually found in the form of arsenate or arsenite. Methylated arsenic compounds occur naturally in the environment as the result of biological activity. The most important commercial compound, arsenic(III) oxide, is produced as a by-product in the smelting of copper and lead ores. Arsenic compounds are mainly used in agriculture and forestry as pesticides, herbicides, and silvicides; smaller amounts are used in the glass and ceramics industries and as feed additives.
DS UN Environment Document Repository
RD Sep 22, 2026