河南科学
河南科學
하남과학
HENAN SCIENCE
2013年
8期
1168-1170
,共3页
微波消解%原子荧光%花生%砷
微波消解%原子熒光%花生%砷
미파소해%원자형광%화생%신
microwave digestion%atomic fluorescence%peanut%arsenic
建立了微波消解氢化物发生原子荧光法测定花生中总砷的分析方法.样品消解分步骤进行，通过对原子荧光仪工作条件的优化，得到了样品测定的最佳条件：负高压270 V、灯电流80 mA、载气600 mL/min、载液酸度5％（V/V）、原子化器温度200℃．线性范围为0．00～20．00μg/L，回归方程的相关系数为0．9995，方法的检出限为0．025μg/L，RSD为1．97％，回收率为98．26％～103．15％．
建立瞭微波消解氫化物髮生原子熒光法測定花生中總砷的分析方法.樣品消解分步驟進行，通過對原子熒光儀工作條件的優化，得到瞭樣品測定的最佳條件：負高壓270 V、燈電流80 mA、載氣600 mL/min、載液痠度5％（V/V）、原子化器溫度200℃．線性範圍為0．00～20．00μg/L，迴歸方程的相關繫數為0．9995，方法的檢齣限為0．025μg/L，RSD為1．97％，迴收率為98．26％～103．15％．
건립료미파소해경화물발생원자형광법측정화생중총신적분석방법.양품소해분보취진행，통과대원자형광의공작조건적우화，득도료양품측정적최가조건：부고압270 V、등전류80 mA、재기600 mL/min、재액산도5％（V/V）、원자화기온도200℃．선성범위위0．00～20．00μg/L，회귀방정적상관계수위0．9995，방법적검출한위0．025μg/L，RSD위1．97％，회수솔위98．26％～103．15％．
The authors established a method for determination of arsenic(As) in peanut. The peanuts were dissolved by microwave and arsenic was determined by hydride generation-atomic fluorescence spectrometry. The samples were dissolved step by step,and the atomic fluorescence spectrometry work’s conditions was optimized,optimal conditions for the negative high voltage 270 V,lamp current 80 mA,carrier gas 600 mL/min,acidic liquid containing 5%,atomic temperature of 200 ℃. The linear range was 0.00~20.00 μg/L,and the regression equation for the correlation coefficient 0.999 5. The results show detection limit is 0.25 μg/L and the RSD is 1.97%. The recovery rate of adding standard substance is 98.26%~103.15%.
