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在微量有机砷化合物的测定中,有机物的破坏,一般多用湿式(酸)消化法,亦有用氧瓶燃烧法。有机砷化合物在氧瓶燃烧时,Belcher等指出砷与铂有形成合金之可能;Conner发现,不能将树脂性物质燃烧完全;因此Tuckerman认为湿式消化法对微量有机砷的测定,较氧瓶燃烧法为佳。在砷的测定方面,目前主要有碘量法;Gutzeit法;钼蓝法;二乙氨荒酸银法。其中碘量法因灵敏度较低,不能满足一般微量砷的测定;Gutzeit法因目视者个别差异较大,不及一般光电比色法为精确;二乙氨荒
In the determination of trace organic arsenic compounds, the destruction of organic matter, the general multi-wet (acid) digestion, but also useful oxygen flask combustion method. When organic arsenic compounds are burned in an oxygen bottle, Belcher et al. Point out the possibility of forming arsenic and platinum alloy; Conner found that the combustion of resinous material can not be complete; Tuckerman that the wet digestion method for the determination of trace organic arsenic than the oxygen flask combustion Better. In the determination of arsenic, there are mainly iodine method; Gutzeit method; molybdenum blue method; Iodine method because of its low sensitivity, can not meet the general determination of trace arsenic; Gutzeit method due to the individual differences between the larger, less than the general photoelectric colorimetric method for precision; Diethylamine shortage