环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2015年
3期
59-60,71
,共3页
砷%汞%全自动石墨消解%原子荧光法%土壤
砷%汞%全自動石墨消解%原子熒光法%土壤
신%홍%전자동석묵소해%원자형광법%토양
Arsenic%Mercury%Automatic graphite digestion system%Atomic fluorescence spectrometry%Soils
采用全自动石墨消解仪代替水浴锅加热王水消解法处理土壤样品，用原子荧光法测定消解液中的砷和汞。该方法在0μg ／L ～20．0μg ／L 范围内线性良好，测定有证标准土壤样品的结果均在标准值允许范围内，砷、汞测定结果的 RSD分别为2．5％～4．8％、2．9％～5．4％，比王水消解法的测定结果更靠近标准值，实际土壤样品的加标回收率分别为94．6％～104％、92．6％～105％。
採用全自動石墨消解儀代替水浴鍋加熱王水消解法處理土壤樣品，用原子熒光法測定消解液中的砷和汞。該方法在0μg ／L ～20．0μg ／L 範圍內線性良好，測定有證標準土壤樣品的結果均在標準值允許範圍內，砷、汞測定結果的 RSD分彆為2．5％～4．8％、2．9％～5．4％，比王水消解法的測定結果更靠近標準值，實際土壤樣品的加標迴收率分彆為94．6％～104％、92．6％～105％。
채용전자동석묵소해의대체수욕과가열왕수소해법처리토양양품，용원자형광법측정소해액중적신화홍。해방법재0μg ／L ～20．0μg ／L 범위내선성량호，측정유증표준토양양품적결과균재표준치윤허범위내，신、홍측정결과적 RSD분별위2．5％～4．8％、2．9％～5．4％，비왕수소해법적측정결과경고근표준치，실제토양양품적가표회수솔분별위94．6％～104％、92．6％～105％。
Automatic graphite digestion instrument method,instead of aqua regia digestion with water bath heating,was adopted as the pretreatment method for soil samples,then arsenic and mercury in the digestion solu-tion was determined by atomic fluorescence spectrometry.This method had good linearity in the range of 0 μg /L~20.0 μg /L,and the determination results of certified standard soil samples were within the permissible range. RSDs of arsenic and mercury were 2.5% ~4.8% and 2.9% ~5.4%.Also,the determination results of auto-matic graphite digestion method were more close to the standard value than the determination results of aqua regia digestion method.The recovery of arsenic and mercury in the practical soil samples were 94.6% ~1 04% and 92.6% ~1 05%.
