Trace determination of mercury, thallium and gold with crystal violet.
D055598:Chemical Phenomena; D002621:Chemistry; D006046:Gold / Q000032:analysis*; D008628:Mercury / Q000032:analysis*; D008722:Methods; D012394:Rosaniline Dyes; D013053:Spectrophotometry; D013793:Thallium / Q000032:analysis*
D012394:Rosaniline Dyes; D006046:Gold; D013793:Thallium; D008628:Mercury