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高效液相色谱-质谱法测定香姜中有机氯农药残留 预览 被引量:3

Determination of Organochlorine Pesticides Residues in Ginger by HPLC-MS
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摘要 [目的]建立高效液相色谱-质谱法(HPLC—MS)测定香姜中有机氯农药残留分析方法。[方法]采用正己烷-丙酮(4:1)超声提取,过滤,盐析,干燥,经弗洛里硅土柱净化,用丙酮+正己烷(10+90)洗脱,用高效液相色谱-质谱联用法检测香姜中有机氯农药残留。[结果]试验表明,有机氯农药标准的线性范围2~50μg/L,相关系数r均在0.99以上,在5、10、20哕L加标水平下,平均回收率分别为80.0%~95.7%、82.4%~97.2%和83.6%~98.3%:相对标准偏差(RSD)分别为4.2%~9.8%、1.8%~9.4%和2.6%~8.8%。方法检出限(信噪比S/N≥3)均为1μg/kg,方法定量下限(信噪比S/N≥10)均为5μg/kg。[结论]该方法简单、快速、准确,灵敏度和精密度好,适合香姜中有机氯农药残留的测定。 [ Method ] To establish a detection method for the organochlorine pesticides residues in ginger by high liquid chromatograpy-mass spectrometry (HPLC-MS). [ Method] Ultrasonic extraction was carried out by n-hexane-aeetone (4:1 ). After filtration, salting out and dr- ying, florida silica column was used for purification; and acetone + n-hexane (10 + 90) was used for elution. Organoehlorine pesticides resi- dues were detected in ginger by HPLC-MS in ginger. [ Result] The standard linear range of organochlorine pesticides was 2 - 50 μg/L; corre- lation coefficient r was above 0.99. The average recovery rates at three levels of 5, 10 and 20 μg/L were 80.0% - 95.7% , 82.4% - 97.2% and 83.6% - 98.3%, respectively. Their relative standard deviations (RSD) were 4.2% - 9.8%, 1.8% - 9.4% and 2.6% - 8.8% , re- spectively. The detection limit (S/N≥3) was 1 μg/kg ; and the quantitation limit ( S/N≥ 10) was 5 μg/kg. [ Conclusion ] This method is simnle, raoid, accurate and sensitive, and is suitable for the determination of organoehlofine nestieides residues in ginger.
作者 任红英 胡红云 杨小红 周姬 REN Hong-ying, HU Hong-yun, YANG Xiao-hong et al ( Food Quality and Safety Supervision Inspection Center of Yongzhou City, Yongzhou, Hunan 42500)
出处 《安徽农业科学》 CAS 2016年第2期116-118,共3页 Journal of Anhui Agricultural Sciences
基金 湖南省食品药品监督管理局食品药品安全科技项目(湘食药科R201522).
关键词 香姜 有机氯 高效液相色谱-质谱法 Ginger Organochlorine HPLC-MS
作者简介 任红英(1984-),女,湖南永州人,工程师,硕士,从事食品检验研究。
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