Determination of lead loaded in cosmetics by solid-phase reflection-d iffusion spectrophotometry
Abstract：A new solid-phase reflection-diffusion spectropho tometric methodfor the determination of lead in cosmetics is studied.In acid me dium,lead and sodium dihydroxydiquinoyl can form a stable red complex precipitat ion.This precipitation can be filtered to the filter paper.Its maximum reflection adsorption wave length is at 530nm.In the range of 0～8μg/10mLpb,there is a good linear relationship between AR and C.The determination limit is 0.05 μg/mL,and the RSD is 3.0%.This method has been successfully used in determinati on of lead in cosmetics.
Machine-generated Keywords：
Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 44-45，15 )