茶叶中9种有机磷农药残留量快速测定方法

为建立了茶叶中9种有机磷农药的气相色谱检测方法，将试样在气相色谱仪DB—XLB色谱柱中分离，FPD检测器鉴定。结果表明，9种有机磷能够很好地分离，在0．05～1．0灿∥mL线性关系良好（r≥0．999）。在0．05—0．20mg／kg的添加水平范围内的平均回收率为78．6％～105％，相对标准偏差为1．4％～7．8％。9种有机磷方法检出限0．005～0．01mg／kg。

Rapid Determination Method of Organophosphorus Pesticide Residues in Tea

To establish the gas chromatographic detection method of nine kinds of organophosphorus pesticide in tea,tea samples were separation by chromatographic column in gas chromatography DB-XLB,and determined with flame photometry detector(FPD).The results show that,nine kinds of organophosphorus can be separated,and have good linear relationship between 0.05 to 1.0 μg/mL(r≥0.999).And the average recovery was 78.6%~105% when the added level was between 0.05 to 0.20 mg/kg;the relative standard deviation is between 1.4% to 7.8%.The detection limit of nine kinds of organophosphorus was 0.005~0.001 mg/kg.