Polarographic behavior of 1, 4, 7-triazacycloanane-N, N', N''-tris (methylphonic acid

• 作 者: GAO Jinzhang HE Hui YANG Wu Kang Jingwan
• 机 构: Institute of Chemistry, Northwest Normal University, Lanzhou 730070, China
• 出 处: 稀有金属(英文版)
• 发表日期: 2002年4期
• 关键词: determination of bismuth Bi(III)- NOTP complex 1 4 7-triazacycloanane-N N N-tris

The polargraphic behavior of Bi(III)-NOTP complex has been investigated in aqueous solution. It was found that under the conditions of pH 3.0 and of 0.02 mol/L NH4Cl, the Bi(III)-NOTP system gives a sensitive second order derivative wave at (0.340 V(vs SCE), which is proved to be an adsorptive complex wave. The composition of the complex is Bi(III):NOTP. Furthermore, the peak current is linear to the concentration of Bi(III) in the range from 3.0×10(8 to 5.0×10(6 mol/L. Artificial and practical samples have been detected with high sensitivity and receptivity.