摘要
本文以APDC,DDTC萃取石墨炉原子吸收光谱法测定环境水样中Te(Ⅳ)和Te(Ⅵ)的含量。方法灵敏度可达到10^(-9)级,变动系数5.6%,Te(Ⅳ)和Te(Ⅵ)的回收率分别为91.7%～105%和95%～105%,线性范围0～100ng/g。
A sensitive, accurate and rapid method for the determination of Te(Ⅳ) and Te(Ⅵ) in environmental samples in the 10^(-9)g level by extraction and graphite furnace atomic absorption spectrometry is presented. The conditions of determination and extraction, several matrix modifiers with respect to their stabilizing power for tellurium in a graphite thrnace are inverstigated. Possible interferences from cations and anions are tried and it is shown that their quantifies below certain limit do not affect the analyses of tellurium. The calibration graphs are linear in the range of 1 to 100 ng/g for tellurium. Characteristic content is 0.025ng and the relative standard deviation of 11 determinations for samples at ng/g magnitude is less than 6%, whereas the recoverys for Te(Ⅳ) and Te(Ⅵ) are 91.7～105% and 95～105% respectively.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1992年第5期95-100,共6页
Spectroscopy and Spectral Analysis
关键词
石墨炉
原子吸收光谱
碲
水
GFAAS
Extraction
Tellurium
Valency states
Water
