碱液提取-电感耦合等离子发射光谱法测定土壤中的六价铬  

Determination of Hexavalent Chromium in Soil by Lye Extraction-inductively Coupled Plasma Emission Spectroscopy

作　　者：邓羡羡 马晶 李丹琪 刘明晓 DENG Xianxian;MA Jing;LI Danqi;LIU Mingxiao(Shandong Metallurgical Research Institute Co.,Ltd.,Jinan 250014,China)

机构地区：[1]山东省冶金科学研究院有限公司,山东济南250014

出　　处：《山东冶金》2022年第6期57-59,共3页Shandong Metallurgy

摘　　要：电感耦合等离子体发射光谱法测定土壤中六价铬的含量,以国家标准土壤样品GBW(E)070255为研究对象,采用氢氧化钠-碳酸钠提取,消除三价铬影响,在选定的仪器工作条件下测定,六价铬的质量浓度在0~80 mg/kg范围内与光谱强度存在良好的线性关系,相关系数大于0.999,精密度和准确度好。本方法检出限和测定下限分别为0.08 mg/kg和0.32 mg/kg,低于HJ 1082—2019(0.5 mg/kg和2.0 mg/kg),为实验室检测提供参考。The content of hexavalent chromium with inductive coupled plasma emission in soil was determined by inductively coupled plasma emission spectroscopy.The national standard soil sample GBW(E)070255 was taken as the research object,and sodium hydroxide-sodium carbonate extraction was used to eliminate the effect of trivalent chromium.The mass concentration of hexavalent chromium is in the range of 0 to 80 m g/kg,with correlation coefficient greater than 0.999,it has good precision and accuracy.The detection limit is 0.08 mg/kg and 0.32 mg/kg,it is lower than that of HJ 1082-2019(0.5 mg/kg and 2.0 mg/kg)for laboratory testing.

关 键 词：电感耦合等离子体发射光谱法 土壤六价铬 碱液提取 

分 类 号：O657.31[理学—分析化学]