论文部分内容阅读
用化学分析法同时测定低合金钢腐蚀产物微量样品中多种金属元素很难达到目的。七十年代以来发展的离子色谱技术已应用于测定无机物和有机物中阴、阳离子。本文参考了有关文献,利用离子色谱法所用样品量少及可同时测定多种离子的特点,选择草酸(或酒石酸)-柠檬酸-氢氧化锂为淋洗液,以抗坏血酸消除基体铁的干扰,采用PAR为显色剂及分光光度检测器,对土壤中低合金钢腐蚀产物及其基体中过渡金属元素进行研究,结果表明,在所选择的条件下,取少量样品,可直接测定低合金钢腐蚀产物及其基体中镍、钴、铜、锌、铅和锰。
Simultaneous determination of a variety of metallic elements in trace samples of corrosion products of low-alloy steel by chemical analysis is difficult to achieve. The development of ion chromatography since the seventies has been applied to the determination of anions and cations in inorganic and organic matter. This paper refers to the literature, the use of ion chromatography with less sample size and can simultaneously determine the characteristics of a variety of ions, the choice of oxalic acid (or tartaric acid) - citric acid - lithium hydroxide as eluent, ascorbic acid to eliminate matrix interference, PAR was used as chromogenic reagent and spectrophotometer to study the corrosion products of low-alloy steel in soil and the transition metal elements in matrix. The results show that under the selected conditions, a small amount of sample can be directly measured low-alloy steel Corrosion products and their matrix of nickel, cobalt, copper, zinc, lead and manganese.