化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2014年
2期
27-29
,共3页
石墨消解%原子荧光光度法%汞%砷
石墨消解%原子熒光光度法%汞%砷
석묵소해%원자형광광도법%홍%신
graphite digestion%atomic fluorescence spectrometry%mercury%arsenic
采用石墨消解法对土壤样品进行预处理，用原子荧光光度法测定样品中汞和砷的含量。汞的质量浓度c在0.00～1.00μg/L范围内与荧光强度I线性相关，回归方程为I=849.47c-22.356，相关系数r2=0.9999，检出限为0.0018μg/g。砷的质量浓度在0.00～10.00μg/L范围内与荧光强度线性相关，回归方程为I=107.22c-28.994，相关系数r2=0.9999，检出限为0.0099μg/g。实际土壤样品5次平行测定汞和砷的相对标准偏差分别为6.2%~15.2%，0.8%~9.9%，用本法对黄土标准样品进行测定，测定结果在标准值允许范围内。
採用石墨消解法對土壤樣品進行預處理，用原子熒光光度法測定樣品中汞和砷的含量。汞的質量濃度c在0.00～1.00μg/L範圍內與熒光彊度I線性相關，迴歸方程為I=849.47c-22.356，相關繫數r2=0.9999，檢齣限為0.0018μg/g。砷的質量濃度在0.00～10.00μg/L範圍內與熒光彊度線性相關，迴歸方程為I=107.22c-28.994，相關繫數r2=0.9999，檢齣限為0.0099μg/g。實際土壤樣品5次平行測定汞和砷的相對標準偏差分彆為6.2%~15.2%，0.8%~9.9%，用本法對黃土標準樣品進行測定，測定結果在標準值允許範圍內。
채용석묵소해법대토양양품진행예처리，용원자형광광도법측정양품중홍화신적함량。홍적질량농도c재0.00～1.00μg/L범위내여형광강도I선성상관，회귀방정위I=849.47c-22.356，상관계수r2=0.9999，검출한위0.0018μg/g。신적질량농도재0.00～10.00μg/L범위내여형광강도선성상관，회귀방정위I=107.22c-28.994，상관계수r2=0.9999，검출한위0.0099μg/g。실제토양양품5차평행측정홍화신적상대표준편차분별위6.2%~15.2%，0.8%~9.9%，용본법대황토표준양품진행측정，측정결과재표준치윤허범위내。
After the sample being pretreatmented with graphite digestion, mercury and arsenic in soil samples were determined by atomic fluorescence spectrophotometry. Mercury showed a linear dependence on fluorescence intensity in the range of 0.00-1.00μg/L. The regression equation of working curve was I=849.47c-22.356, and the correlation coefficient (r2) was 0.999 9. The method detection limit was 0.001 8 μg/g for mercury. Arsenic showed a linear dependence on fluorescence intensity in the range of 0.00-10.00μg/L. The regression equation of working curve was I=107.22c-28.994, and the correlation coefficient (r2) was 0.999 9. The method detection limit was 0.009 9μg/g for arsenic. RSDs of mercury and arsenic in soil samples were 6.2%-15.2%,0.8%-9.9%, respectively. The detection results of soil standard merterial agreed well with the standard value.
