Atmospheric arsenic
نویسندگان
چکیده
منابع مشابه
Arsenic Speciation in Atmospheric Aerosols at the Geysers
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...
متن کاملGlobal Atmospheric Transport and Source-Receptor Relationships for Arsenic.
Arsenic and many of its compounds are toxic pollutants in the global environment. They can be transported long distances in the atmosphere before depositing to the surface, but the global source-receptor relationships between various regions have not yet been assessed. We develop the first global model for atmospheric arsenic to better understand and quantify its intercontinental transport. Our...
متن کاملArsenic and Arsenic Compounds
Arsenic (atomic number, 33; relative atomic mass, 74.92) has chemical and physical properties intermediate between a metal and a nonmetal, and is often referred to as a metalloid or semi-metal. It belongs to Group VA of the Periodic Table, and can exist in four oxidation states: –3, 0, +3, and +5. Arsenite, AsIII, and arsenate, AsV, are the predominant oxidation states under, respectively, redu...
متن کاملArsenic and inorganic arsenic compounds
Arsenic, arsenic trioxide and pentoxide, arsenous acids, arsenic acid and their salts (arsenites and arsenates) are carcinogenic substances (Carcinogen category 1) and do not, therefore, have MAK and BAT values (Greim 2002). The former TRK value (technical exposure limit) for arsenic and its inorganic compounds was 0.10 mg arsenic/m (measured as the inhalable fraction of the aerosol; calculated...
متن کاملSource apportionment of arsenic in atmospheric dust fall out in an urban residential area, Raipur, Central India
The components and quantities of atmospheric dust fallout have been reported to be the pollution indicator of large urban areas. The multiplicity and complexity of sources of atmospheric dusts in urban regions has put forward the need of source apportionment of these sources indicating their contribution to specific environmental receptor. The study presented here is focused on investigation of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1979
ISSN: 0028-0836,1476-4687
DOI: 10.1038/280104a0