超声王水浸提-电感耦合等离子体质谱(ICP-MS)法测定土壤中汞含量
Determination of mercury content in soil by ultrasonic aqua leaching-inductively coupled plasma mass spectrometry(ICP-MS)method
陈超超1
作者信息
- 1. 山西省吕梁生态环境监测中心,山西 吕梁 030000
- 折叠
摘要
为准确测定土壤中汞含量,采用单因素实验考察了王水、超声时间、超声温度等因素对测定土壤中汞含量结果的影响,建立了超声王水浸提-电感耦合等离子体质谱(ICP-MS)法测定土壤中汞的方法.结果表明,王水用量为 7mL、超声温度为 70℃、超声时间为 60min时超声效果最佳.该方法检出限为0.006μg/g,定量下限为 0.024μg/g,RSD为 2.40%～3.93%(n=6),样品加标回收率在 90.4%～110.1%.
Abstract
To accurately determine the mercury content in soil,a single factor experiment was conducted to investigate the effects of aqua regia,ultrasonic time,and ultrasonic temperature on the determination of mercury content in soil.An ultrasonic aqua regia leaching-inductively coupled plasma mass spectrometry(ICP-MS)method for determining mercury in soil was established.The results show that the best ultrasonic effect is achieved with 7 mL of aqua regia,an ultrasonic temperature of 70℃,and an ultrasonic time of 60 minutes.The method has a detection limit of 0.006 μg/g,a lower limit of quantification of 0.024 μg/g,an RSD of 2.40%～3.93%(n=6),and a sample recovery rate of 90.4%～110.1%.
关键词
超声波/王水浸提/电感耦合等离子体质谱法/土壤汞含量Key words
ultrasonic/aqua regia leaching/inductively coupled plasma mass spectrometry/mercury in soil引用本文复制引用
出版年
2025
NETL
NSTL
万方数据