Calcination of Arsenic-bearing Precipitate and Dissolution Test of Arsenic
نویسندگان
چکیده
منابع مشابه
construction and validation of the translation teacher competency test and the scale of students’ perceptions of translation teachers
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Arsenic 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...
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Microbacterium sp. strain SZ1 isolated from gold ores of a Malaysia gold mine was found to be highly resistant to arsenic. Here, we report the draft genome sequence of SZ1, which may provide further insights into understanding its arsenic resistance mechanism. In this draft genome, a complete set of ars operons and two additional scattered ars genes were encoded.
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poisons is arsenic, though the arsenic in question was generally not the pure chemical element itself but rather its oxide, As2O3 or diarsenic trioxide, otherwise known with equal inaccuracy as white arsenic. Indeed, since the most common form of this compound is actually composed of discrete As4O6 molecules, it should more properly be called tetraarsenic hexaoxide. For centuries proof of arsen...
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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...
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ژورنال
عنوان ژورنال: Journal of the Mining and Metallurgical Institute of Japan
سال: 1980
ISSN: 0369-4194,2185-6729
DOI: 10.2473/shigentosozai1953.96.1111_629