Abstract
Methods are described for the determination of arsenic in organic compounds. Following oxygen flask combustion using a nichrome gauze arsenic is estimated either by titration of arsenic(III) with iodine or by titration of iodine liberated from iodide by arsenic(V). An alternative colorimetric procedure involving measuring the absorbance of molybdenum blue is used following open tube digestion in the absence of halogens or sealed tube digestion in the presence of halogens.
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