摘要
Abstract
The quantitative analysis of copper is of great significance in the fields of metallurgy,chemical engineering,and environmental monitoring.Although modern technologies such as atomic absorption spectrophotometry and inductively coupled plasma mass spectrometry have been widely used,the iodometric method remains the preferred method in industrial production due to its low cost,easy operation,and suitability for constant copper analysis.However,when faced with materials with complex compositions such as high carbon,high silicon,or lead bismuth samples,traditional iodometric methods often result in analysis errors due to interfering elements or improper operating conditions.This study conducted systematic experiments on six types of complex materials(low/high copper content,high lead bismuth,high carbon,easy color reversal,low iron,high silicon),and optimized the sample processing flow,reagent addition timing,and acidity control strategy.Experiments have shown that by adjusting the sample size,introducing potassium thiocyanate precipitation conversion,hydrofluoric acid digestion of silicates,and urea elimination of nitrite ions,the accuracy of analysis results can be significantly improved(RSD<1.5%).This study provides a feasible solution for the rapid and accurate determination of copper in complex materials.关键词
短碘量法/铜含量测定/复杂物料/干扰消除/方法优化Key words
Short iodine method/Copper content determination/Complex materials/Interference elimination/Methods optimization分类
化学化工
