摘要
本文主要讨论应用氢化物发生-原子荧光光谱法,测定土壤中砷的技术。用硝酸-高氯酸分解法对样品进行预处理,探讨了共存离子对测定的影响及干扰的消除,分析了土壤标样Ess-2、Ess-3,进行了方法精密度和回收率试验。在经过优化的试验条件下,砷的检出限:0.02ug/L。回收率在91%~107%之间,相对标准偏差小于或等于7.8%。土壤标样Ess-2、Ess-3测定值与标准值相符,相对标准偏差也低于10%。表明将该法用于土壤中砷的测定操作简便、快速基体干扰少、灵敏度高、分析结果稳定可靠。
The technology of determination of As in soil with hydride reaction-atomic fluorescence is discussed.Under the optimal experimental conditions,the examined value of As is 0.02ug/L,and recycling rate is from 91% to 107%,the error compared standard is lower than or equal 7.8%.It showed that characteristics of this method are simple operation,low disturbance and reliable analyzed result.
出处
《内蒙古环境科学》
2008年第4期99-101,共3页
Inner Mongolia Environmental Protection
关键词
氢化物发生
原子荧光法
土壤
总砷
hydride reaction
atomic fluorescence
soil
total As
