Highly Sensitive Spectrophotometric Determination of Trace Amounts of Tin with the Tungstate——Basic Dyes——Poly (vinyl-alcohol)System
DU Chao1, LI Zu-Bi1, LI Chong-Ning1, XU Qi-Heng2
1. Adult Education College, Yunnan University, Kunming, 650091, P. R. China;
2. Department of Chemistry, Yunnan University, Kunming, 650091, P. R. China
DU Chao, LI Zu-Bi, LI Chong-Ning, XU Qi-Heng. Highly Sensitive Spectrophotometric Determination of Trace Amounts of Tin with the Tungstate——Basic Dyes——Poly (vinyl-alcohol)System[J]. Chem. J. Chinese Universities, 1999, 20(S1): 312.