07-04-2023 дата публикации
Номер: CN115931849A
Принадлежит:
The invention provides a method for detecting and judging lead and compounds thereof, which comprises the following steps: placing a sample to be detected on blank filter paper, dropwise adding a buffer solution which is a mixed aqueous solution of tartaric acid and sodium hydrogen tartrate to the sample to be detected until the sample to be detected is completely wetted, dropwise adding a color developing agent to the sample to be detected until the sample to be detected is completely wetted, the color developing agent is a mixed aqueous solution of sodium rhodizonate and an OP-10 emulsifier, finally standing the to-be-detected sample for a certain time t, observing the color change of the to-be-detected sample, if the color of the to-be-detected sample is rose red, judging that the to-be-detected sample contains lead or a lead compound, and if the color of the to-be-detected sample is not rose red, judging that the to-be-detected sample contains lead or a lead compound. Otherwise, judging ...
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