矿产与地质
礦產與地質
광산여지질
MINERAL RESOURCES AND GEOLOGY
2014年
3期
381-384
,共4页
石墨炉原子吸收%光谱法%基体改进剂%银
石墨爐原子吸收%光譜法%基體改進劑%銀
석묵로원자흡수%광보법%기체개진제%은
graphite furnace atomic absorption%spectrometry%matrix modifier%silver
对石墨炉原子吸收光谱法测定地质样品中微量银进行了研究。样品经四酸溶解,在3mol/L 的HCl 介质中以 EDTA-抗坏血酸溶液作为基体干扰改进剂,用石墨炉原子吸收光谱法测定地质样品中微量银。方法检出限为0.051ng/mL,精密度(RSD,N=11)5.91%~12.83%。能满足地质样品中w(Ag)/10-6=0.03~5范围内银测定的准确度和精密度的要求。
對石墨爐原子吸收光譜法測定地質樣品中微量銀進行瞭研究。樣品經四痠溶解,在3mol/L 的HCl 介質中以 EDTA-抗壞血痠溶液作為基體榦擾改進劑,用石墨爐原子吸收光譜法測定地質樣品中微量銀。方法檢齣限為0.051ng/mL,精密度(RSD,N=11)5.91%~12.83%。能滿足地質樣品中w(Ag)/10-6=0.03~5範圍內銀測定的準確度和精密度的要求。
대석묵로원자흡수광보법측정지질양품중미량은진행료연구。양품경사산용해,재3mol/L 적HCl 개질중이 EDTA-항배혈산용액작위기체간우개진제,용석묵로원자흡수광보법측정지질양품중미량은。방법검출한위0.051ng/mL,정밀도(RSD,N=11)5.91%~12.83%。능만족지질양품중w(Ag)/10-6=0.03~5범위내은측정적준학도화정밀도적요구。
This article conducted research on measurement of trace silver in geological samples by graphite fur-nace atomic absorption spectrometry.After dissolved in tetracid,Trace silver in geological samples was measured by graphite furnace atomic absorption spectrometry in medium of HCl (3mol/L)while EDTA-as-corbic acid solution was used as matrix interference modifier.The detection limit was 0.05 1ng/mL,and the precision (RSD,N=1 1)was 5.91%~12.83%.The method meets the requirements on accuracy and preci-sion of silver measurement within the range of w(Ag)/10 -6 = 0.03 to 5.
