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引言一般测定钢中铜系采用硫化物分离的方法,例如磁铁合金中的铜用硫化氢分离;碳素钢和低合金钢中铜用硫代硫酸纳来分离,这些方法手续繁复。用二乙基代胺基二硫甲酸纳,(DDTc)可以在不离铁的条件下进行此色,但使用 DDTC 显色时,要用保护胶体溶液,因为它不是真溶液就受到一定的局限性,也影响到分析的重现性。在含镍的合金钢样中,
Introduction General determination of copper in steel using sulfide separation methods, such as magnetic alloy copper with hydrogen sulfide separation; carbon steel and low alloy steel copper with sodium thiosulfate separation, these methods complicated procedures. Diethyl amino amine dithiosulfate sodium (DDTc) can be carried out under the conditions of iron from the color, but when using DDTC color, the protective colloid solution, because it is not a real solution to some limitations , But also affect the reproducibility of the analysis. In the nickel-containing alloy steel samples,