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湖南冶金地质勘探研究所情报室曾于1967年12月推荐了西安实验室用乙二胺代替NH_4OH——NH_4C1底液,极谱法测定Cu、Zn、Cd的方法。我们在1975年9月按原介绍的方法作Cu的标准曲线,发现在50毫升底液中含15％乙二胺4毫升时,极化电位变化较大,且含Cu从0.5毫克至4毫克间的线性关系不好。我们在原方法的基础上,通过实验,发现每55毫升底液中含70％乙二胺0.8毫升,氯化铵1.5克时,含Cu量从0.025毫克至20毫克间的线
Hunan Metallurgical Geological Exploration Institute Intelligence Room was December 1967 recommended Xi’an Laboratory ethylenediamine instead of NH_4OH - NH_4C1 bottom solution, polarographic determination of Cu, Zn, Cd methods. We in September 1975 according to the original introduction of the method for the Cu standard curve and found that 50 ml of bottom solution containing 15% ethylenediamine 4 ml, the polarization potential greater change, and containing Cu from 0.5 mg to 4 mg The linear relationship between the poor. We based on the original method, through experiments and found that each 55 ml of the bottom solution containing 70% ethylenediamine 0.8 ml, 1.5 g of ammonium chloride, containing Cu content from 0.025 mg to 20 mg between the line