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題 名 | Determination of Amitraz Residue in Fruits by High Performance Liquid Chromatography=以高效液相層析檢測水果中三亞蟍殘留量 |
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作 者 | 曾素香; 張碧秋; 周薰修; | 書刊名 | 藥物食品分析 |
卷 期 | 7:3 1999.09[民88.09] |
頁 次 | 頁225-232 |
分類號 | 412.37 |
關鍵詞 | 三亞蟍; 高效液相層析; 矽酸鎂固相萃取匣; 水果; Amitraz; High performance liquid chromatography; HPLC; Florisil cartridge; Fruit; |
語 文 | 英文(English) |
中文摘要 | 本研究發展出以高效液相層析法檢驗水果中三亞□殘留量之方法。稱取20g檢體 及2g碳酸氫鈉,以丙酮均質抽取,抽取液抽氣過濾後加入1g氯化鈉,以正己烷:乙酸乙酯 (8:2,v/v)溶液萃取,有機溶媒層減壓濃縮至5 mL後注入矽酸鎂固相萃取匣,以10mL正己 烷:乙酸乙酯(8:2,v/v)溶液沖提,沖提液減壓濃縮至乾以乙□定容並以HPLC附UV檢出器分 析。層析管為Lichrosorb RP-18,移動相為乙□:水(80:20,v/v)),UV檢出器設定為313nm。 添加三亞□於蘋果中,檢體濃度為0.25-0.75 ppm,所得平均回收率為88.8-92.1%;添加於 葡萄柚中,檢體濃度為0.1-0.3ppm,所得平均回收率為87.2-90.9%。本檢驗方法之最低檢 出限量為0.02ppm。 |
英文摘要 | A high performance liquid chromatographic method (HPLC) for the determination of amitraz residue in fruits has been developed. Twenty grams of sample and 2 g of sodium hydrogen carbonate were weighed and homogenized with acetone. After vacuum filtration, 1g NaCl was added and partitioned with n-hexane containing 20% ethyl acetate. The organic layer was evaporated to 5 mL and applied on a florisil cartridge. The cartridge was eluted with 10 mL n-hexane: ethyl acetate (8:2. v/v), and the eluate was evaporated to dryness. The residue was dissolved in acetonitrile and determined by HPLC equipped with a UV detector. Separation was conducted with a Lichrosorb RP-18 column using acetonitrile: H□O (80:20, vlv) as mobile phase to separate amitraz and interferences, and amitraz was determined at 313 nm wavelength. Recovery studies were carried out by spiking the amitraz standards to the levels of 0.25-0.75 ppm in apples and 0.1-0.3 ppm in grapefruit. The average recoveries were 88.8-92.1% and 87.2-90.9% for apples and grapefruit, respectively. The detection limit was 0.02 ppm. |
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