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The Studies and Application of Determination of Lead in Ceramics by Spectrophotometry
Author(s): 
Pages: 45-47
Year: Issue:  2
Journal: JOURNAL OF TANGSHAN TEACHERS COLLEGE

Keyword:  分光光度法硫氰酸钾罗丹明B;
Abstract: 研究了Pb-硫氰酸钾-罗丹明B的离子络合分光光度测定陶瓷中的微量铅,其最大吸收波长在620nm处,摩尔吸光系数为ε620=1.4×105L·mol-1·cm-1.Pb2+的浓度在0.5~5.0μg/25mL,符合朗伯-比耳定律.研究了共存离子的影响,进行了精密度试验,相对标准偏差为0.97‰,加标回收率为99%~103%.
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