粗金中镍量的测定

Nickel content determination in coarse gold

研究建立了容量法测定粗金中镍量的方法,通过条件实验确定了最小称样质量,沉淀分离镍的丁二酮肟溶液加入量及沉淀溶解方式等。该方法测定结果的相对标准偏差小于2.00%,加入标准物质回收率为98.05%~100.38%,准确度和精密度良好,适合粗金中镍量的批量测定。

The study established volumetric method to determine nickel content in coarse gold.Through condition test,the minimum sample weight,the dosage of dimethylglyoxime to precipitate nickel and the manner of precipitate dissolution were determined.The RSD of the determination results is<2.00%.The recovery rate of reference material is 98.05%-100.38%.The accuracy and precision are good.The method is suitable for batch determination of nickel content in coarse gold.