摘要
建立了微波消解-电感耦合等离子体发射光谱法测定土壤中微量重金属的样品前处理过程与方法,并通过仪器工作条件和酸消解体系的选择,以及光谱干扰和基体干扰的消除对方法进行了优化。结果表明,使用6m LHNO_3+2 m L HCl+1m LHF+1m LH_2O_2对土壤进行微波消解,在建立的试验条件下,土壤中重金属(铜、铅、锌、镉、锰、镍、铬和钒)的检出限为0.002~0.014 mg/kg,精密度为1.3%~3.6%,回收率为97.4%~106%。本方法简便、安全、准确、快速。
Pretreatment process and method were established for determination of trace heavy metals in soil by microwave digestion-inductively coupled plasma optical emission spectrometry. The method was optimized by the selection of instrument parameters and acid digestion system,and elimination of spectral and matrix interference. Result showed that under the experimental conditions of 6 m LHNO3＋ 2 m LHCl ＋ 1 m LHF ＋ 1 m LH2O2,using microwave to digest the soil samples,the method detection limit,of heavy metals（ copper,lead,zinc,cadmium,manganese,nickel,chromium and vanadium） in soil ranged from 0. 002 to 0. 014 mg/kg,the precision ranged from 1. 3% to 3. 6%,and the recovery rate ranged from 97. 4% to106%. This method is simple,safe,accurate and fast.
出处
《四川环境》
2017年第5期119-122,共4页
Sichuan Environment
关键词
微波消解
电感耦合等离子体发射光谱法
土壤
重金属
Microwave digestion
inductively coupled plasma optical emission spectrometry
soi l
heavy metals
作者简介
杨洋（1982-）,女,四川泸县人,2009年毕业于重庆大学环境工程专业,硕士研究生,工程师,主要从事环境监测工作.
通讯作者：梁艳,liangyan@gxu.edu.cn.
