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 .
标题:气质联用检测草莓中毒死蜱残留量检出限测定方法研究
英文标题:Study on determination methods of detection limits of chlorpyrifos residues in strawberry by GC-MS