第 50 卷第 4 期 |  | Vol. 50 No. 4 | 2020 年 8 月 | Aug 2020 |
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所屬欄目:分析與測試
高效液相色譜-串聯(lián)質(zhì)譜法測定節瓜中的烯酰嗎啉和氟吡菌胺及其代謝物的殘留量 |
張貴群1,2,3,歐曉明1,2,3*,歐 將1,2,3,馬 婧1,2,3,宋強勇1,2,3,黃 微1,2,3
(1. 湖南化工研究院有限公司 國家農藥創(chuàng )制工程技術(shù)研究中心,湖南 長(cháng)沙 410014;2. 農用化學(xué)品湖南省重點(diǎn)實(shí)驗室,湖南 長(cháng)沙410014;3. 湖南加法檢測有限公司,湖南 長(cháng)沙 410014) |
摘 要:建立了高效液相色譜-串聯(lián)質(zhì)譜(HPLC-MS/MS)測定節瓜中烯酰嗎啉和氟吡菌胺及其代謝物2,6-二氯苯甲酰胺殘留量的分析方法。樣品經(jīng)乙腈提取、液液分配萃取凈化、濃縮定容后,以Agilent EC-C8色譜柱分離,采用UPLC-MS/MS多反應監測(MRM)正離子模式測定,外標法定量。烯酰嗎啉、氟吡菌胺和2,6-二氯苯甲酰胺在節瓜中的最低檢測濃度均為0.05 mg·kg-1。在0.05、0.5、5.0 mg·kg-1 3個(gè)添加水平下,烯酰嗎啉、氟吡菌胺和2,6-二氯苯甲酰胺在節瓜中的平均回收率分別為82%~87%、91%~94%、76%~89%,相對標準偏差分別為4.1%~5.9%、4.5%~5.2%、0.9%~9.3%。 |
關(guān)鍵詞:高效液相色譜-串聯(lián)質(zhì)譜;烯酰嗎啉;氟吡菌胺;2,6-二氯苯甲酰胺;節瓜;殘留 |
中圖分類(lèi)號:O657.63 文獻標識碼:A 文章編號:1009-9212(2020)04-0065-04 |
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Determination of Dimethomorph, Fluopicolide and Its Metabolite Residues in Chieh-qua Using High Performance Liquid Chromatography Tandem Mass Spectrometry |
ZHANG Gui-qun1,2,3, OU Xiao-ming1,2,3*, OU Jiang1,2,3, MA Jing1,2,3, SONG Qiang-yong1,2,3, HUANG Wei1,2,3
(1. National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry Co.,Ltd., Changsha 410014, China; 2. Hunan Province Key Laboratory for Agrochemicals, Changsha 410014, China; 3. Hunan J&F Test Co.,Ltd., Changsha 410014, China) |
Abstract:A method of determination for dimethomorph, fluopicolide and its metabolite residues in chieh-qua by HPLC-MS/MS was established. The analytes were extracted from samples using acetonitrile, and purified based on liquid-liquid distribution, then analyzed using UPLC-MS/MS multiple reaction monitoring (MRM) mode via positive electrospray ionization with a Waters Agilent EC-C8 column as the analytical column. All the analytes were quantified by the external standard method. The determination limit was 0.05 mg·kg-1. The results showed that the average recoveries at the fortified levels of 0.05, 0.5, 5.0 mg·kg-1 were 82% ~ 87%、91% ~ 94%、76% ~ 89%, and the RSD were 4.1%~5.9%、4.5%~5.2%、0.9%~9.3%, respectively. |
Key words:HPLC-MS/MS; dimethomorp; fluopicolide; 2,6-dichlorobenzamide; chieh-qua; residue |
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基金項目:國家自然科學(xué)基金項目(21672057)。
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作者簡(jiǎn)介:張貴群(1984—),男,湖南郴州人,助理研究員,碩士,研究方向:農藥殘留分析及農殘國家標準制定(E-mail:274702782@qq.com)。
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聯(lián) 系 人:歐曉明,研究員,博士。
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收稿日期:2020-07-10
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