摘要
研究各种基体改进剂的增感效果,和它们对灰化、原子化温度的影响。结果表明,Ca、Sr、Ca-Mg、Ca-La、Sr-Mg均可作为硼的基体改进剂,且Ca-Mg、Ca-La、Sr-Mg较之Ca、Sr性能优越。并分别以Ca、Ca-Mg、Sr-Mg作基体改进剂,直接分析饮用水中痕量硼,所得结果基本一致,相对标准偏差均在10%以内。
The effectc of various matrix modifiers on the sensitivity enhancement and ashing and ato-mization temperatures in the determination of boron with GFAAS are compared. The resultsshowed Ca, Sr, Ca-Mg, Ca-La, and Sr-Mg modifiers were efficient modifiers for boron, butCa-Mg, Ca-La and Sr-Mg were on the whole more efficient than single element matrix modi-fier, Ca or Sr. The analytical results obtained by using Ca, Ca-Mg and Sr-Mg as matrix modi-fiers for the direct determination of boron in drinking water were satisfactory. The relativestandard deviation was less than 10%.
关键词
GFAAS
硼
测定
基体改进剂
水
Graphite furnace atomic absorption spectrometry
matrix modifier
boron
