摘要
在0.10 mol/L酒石酸介质中,采用氢化物发生-原子荧光光谱法测定土壤中水溶态和可交换态Sb(Ⅲ)和Sb(Ⅴ)。以氢气发生器为氩-氢火焰提供氢气,明显降低了硼氢化钾浓度,改善了测定检出限。考察了酒石酸掩蔽Sb(Ⅴ)的量及共存干扰元素的允许量。方法检出限Sb(Ⅲ)为0.026 ng/L,总Sb为0.019 ng/L。加标回收试验表明,方法准确、可靠。
A method for the determination of water soluble and exchanged Sb （Ⅲ） and Sb （V） in soil samples was established using hydride generation-atomic fluorescence spectrometry in medium of 0.10 mol/L tartaric acid. The detection limit was remarkably improved and the concentration of KBH4 used was reduced due to the use of pure H2 from hydrogen generator and steady Ar-H2 flame. Dosage of masking agent of tartaric acid and tolerance amounts of co-existed elements were also investigated. The detection limits of the method are 0. 026 ng/L for Sb （Ⅲ） and 0.019 ng/L for total Sb. The accuracy of the method was verified by recovery tests on spiked samples.
出处
《岩矿测试》
CAS
CSCD
北大核心
2010年第1期34-38,共5页
Rock and Mineral Analysis
基金
国土资源地质大调查项目资助(1212010511218)
关键词
氢化物发生
原子荧光光谱法
氢气
水溶态
可交换态
锑(Ⅲ)
锑(Ⅴ)
土壤
hydride generation
atomic fluorescence spectrometry
hydrogen
water soluble specie
exchangeable specie
Sb（ Ⅲ ）
Sb（V）
soil
