四（4-三甲胺苯基）卟啉-锌络合物的极谱吸附波

四（4-三甲胺苯基）卟啉-锌络合物的极谱吸附波 POLAROGRAPHIC ADSORPTIVE WAVE OF ZINC ——MESO-TETRA（4-TRIMETHYLAMMONIUMPHENYL） PORPHINE COMPLEX 罗登柏 Luo Dengbai and Zhao Zaofan first-author 赵藻藩 < 正 > 我们曾研究过四（4-三甲胺苯基）卟啉（简称TTAPP）——镉络合物的极谱吸附波。本文研究TTAPP—Zn络合物的极谱吸附波。沈观略曾利用方波极谱法,在酸性的溴化钾——碘化钾介质中,得到锌络合物的极谱吸附波,检测限约为1.5×10 -6 M。我们发现在PH=9.6左右的NH 3 —NH 4 Cl缓冲溶液中,Zn—TTAPP络合物有一个很好的极谱吸附波,Ep=-1.35V左右（对SCE,下同）,检测限达1.5×10 -7 M（受空白值所限）。在柠檬酸三钠、三乙醇胺等掩蔽剂存在下,可采用本法测定天然水及人发中的锌。用极谱法研究了络合物的组成。 The Polarographic adsorptive wave of zinc——maso-tetra （4-trimethylammoniumphenyl） porphine （TTAPP） complex in the buffer of ammonia and ammonium chloride have been studied. Ep=-1.35V （VS. SCE）. The detect limit is 1.5×10 -7 M. The peak height is linearly proportional to zinc concentration over a range of 0.01 to 0.5μg ml -1 . This method has been applied to the determination of trace amount of zinc in hair and water. The mechanism of adsorptive wave has been discussed. The composition of Zn-TTAPP complex has been studied by "polarographic mole-ratio method". The results have showed that the Zn: TTAPP in complex is 1:1, the conditional stability constant of complex is β’=（2.9±0.1）×10 7 . 1982-01-01 2021-04-01 1