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Acta Chimica Sinica ›› 1980, Vol. 38 ›› Issue (5): 433-440. Previous Articles     Next Articles

铌(V)和钽(V)的过氧络合物在分析化学中的应用Ⅰ.酒石酸对利用Ta(V)-H2O2-PAR三元络合物直接分光光度测定钽的影响

罗宗铭   

  1. 广东矿冶学院分析化学系
  • 投稿日期:1978-10-31 发布日期:2013-06-03

APPLICATIONS OF NIOBIUM(Ⅴ) AND TANTALUM(Ⅴ) PEROXIDE COMPLEX IN ANALYTICAL CHEMISTRY Ⅰ.THE EFFECT OF TARTARIC ACID ON DIRECT SPECTROPHOTOMETRIC DETERMINATION OF TANTALUM VIA TERNARY TA(Ⅴ)-H2O2-PAR COMPLEX

LUO ZONG-MING   

  1. Chemical Analysis Department of Institute of Mining and Metallurgy, Guang Dong Province
  • Received:1978-10-31 Published:2013-06-03

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The effect of tartaric acid,citric acid,oxalic acid and ammonium fluoride on the formation of the ternary Ta(V)-H2O2-PAR complex has been studied in detail.In these complexing agents,it has been observed that only suitable addition of tartaric acid is advantageous to speotrophotometrio measurement of Ta(Ⅴ),because it would increase the stability of complex ranging from pH4 to 7.A method for speotrophoto-metric determination of tantalum in tartaric acid medium at wavelength 530 nm and pH 5.6 with ternary Ta(V)-H2O2-PAR complex is recommended.