本文關(guān)鍵詞：蘆蒿中5種擬除蟲菊酯農(nóng)藥殘留的測定　出處：《現(xiàn)代預(yù)防醫(yī)學(xué)》2015年23期 　論文類型：期刊論文

  更多相關(guān)文章： 固相萃取法 QuEChERS法 蘆蒿 擬除蟲菊酯 氣相色譜

【摘要】：目的建立一種測定蘆蒿中擬除蟲菊酯類農(nóng)藥殘留測定的方法。方法蘆蒿樣品分別經(jīng)QuEChERS法和固相萃取(SPE)法處理后,結(jié)合氣相色譜-電子捕獲檢測器(GC-ECD)對蘆蒿中5種擬除蟲菊酯農(nóng)藥殘留進(jìn)行測定分析。結(jié)果 5種農(nóng)藥在30 min內(nèi)得到很好的分離,在10.0μg/kg~5 000μg/kg濃度范圍內(nèi)線性關(guān)系良好(r0.999),最低檢出濃度為0.2μg/kg~4.5μg/kg。在加標(biāo)100μg/kg~200μg/kg濃度范圍內(nèi),QuEChERS平均加標(biāo)回收率為23.0%~42.4%,相對標(biāo)準(zhǔn)偏差(RSD)為10.8%~26.9%;SPE法平均加標(biāo)回收率為70.7%~98.9%,相對標(biāo)準(zhǔn)偏差分別為1.7%~8.9%(10%)(n=5)。結(jié)論 QuEChERS法雖前處理簡單、方便,但加標(biāo)回收率低,相對偏差大,而SPE法雖樣品處理過程費(fèi)時(shí),但加標(biāo)回收率高,相對偏差小,是蘆蒿中擬除蟲菊酯類農(nóng)藥殘留的首選方法。
[Abstract]:Objective to establish the determination method of residual pyrethroid pesticides for the determination of Artemisia selengensis. Methods Artemisia samples were detected by QuEChERS method and solid phase extraction (SPE) method, combined with gas chromatography electron capture detector (GC-ECD) of 5 kinds of pyrethroid pesticides residues in Artemisia selengensis were analyzed. The results are separated the 5 pesticides in 30 min, 10 g/kg~5 000 g/kg concentration range a good linear relationship (r0.999), the minimum detectable concentration of 0.2 mu g/kg~4.5 mu g/kg. in spiked 100 mu g/kg~200 mu g/kg in the concentration range of QuEChERS, the average recovery rate was 23.0%~42.4%, the relative standard deviation (RSD) for 10.8%~26.9% SPE method; the average recovery rate was 70.7%~98.9%, the relative standard deviation was 1.7%~8.9% (10%) (n=5). Conclusion QuEChERS method is simple and convenient, but before the treatment, the recovery rate is low, the relative deviation, while the SPE method is the treatment process of the sample fee However, the recovery rate is high, the relative deviation is small, is the preferred method of pyrethroid residues in vegetables.

【作者單位】： 南京市疾病預(yù)防控制中心;南京市浦口區(qū)疾病預(yù)防控制中心;
【基金】：南京市醫(yī)學(xué)科技發(fā)展資金資助項(xiàng)目(QRX11128)
【分類號(hào)】：R155.5
【正文快照】： 蘆蒿是一種菊科蒿屬植物,具有濃郁的清香味和外脆里嫩的爽口,含有豐富的維生素和多種礦物質(zhì)元素,也含有較高的揮發(fā)性精油、香豆素及黃體酮類化合物,具有抑菌消炎、防癌抗癌、維護(hù)心血管正常功能的藥用價(jià)值。作為一種食藥兩用的資源,蘆蒿的價(jià)值不斷開發(fā)利用,市場需求量越來越大

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1 王延群;;野菜新貴話蘆蒿[J];健康博覽;2012年06期

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本文編號(hào)：1426510