气质联用检测草莓中毒死蜱残留量检出限测定方法研究

Study on determination methods of detection limits of chlorpyrifos residues in strawberry by GC-MS

中文关键词:  检出限  气相色谱-质谱  信噪比法

英文关键词:detection limits  gas chromatography-mass spectrometry  signal-to-noise ratio method

中文摘要:

      目的 建立色谱分析中检出限的测定方法。方法 以草莓为基质, 用气相色谱-质谱法测定草莓中毒 死蜱含量。结果 校准曲线估算法、空白标准偏差法、3S0 法、信噪比法得出的检出限分别为 10.75、0.18、0.5、 1.5 ng/mL。结论 信噪比法所测出的检出限结果符合要求。

英文摘要:

      Objective To establish a method for determination of the detection limit in chromatographic analysis. Methods Chlorpyrifos content in strawberry was determined by gas chromatography-mass spec- trometry. Results The detection limits of calibration curve method, blank standard deviation method, 3S0 method, and signal-to-noise ratio method were 10.75, 0.18, 0.5, 1.5 ng/mL, respectively. Conclusion The detection limit of signal-to-noise ratio method could conform with the requirement of detection .