Answers are grounded in this paper and cite their sources.
Arsenic can be detected and/or determined at a trace level by spectrophotometry or spectrofluorimetry using catechol and a cationic dye as reagents. Semiquantitative determination of arsenic has been carried out using a standard colour comparator. The method has been successfully exploited for the quantification of total arsenic in water samples.
No takes yet. Share an insight, caveat, or question.
Pal et al. (1995) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: