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頁籤選單縮合
題名 | 南臺灣市售茶葉中農藥殘留之調查分析研究=Survey of Pesticide Residues in Marketing Teas in Southern Taiwan |
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作者 | 林鳳蘭; 陳福安; 郭素蓮; 呂車鳳; | 書刊名 | 大仁學報 |
卷期 | 28 民95.03 |
頁次 | 頁1-15 |
分類號 | 412.37 |
關鍵詞 | 茶葉農藥殘留; 有機磷; 有機氯; 氨基甲酸鹽; Pesticide residues in teas; Organophosphoric pesticides; Organochloric pesticides; Carbamate pesticides; |
語文 | 中文(Chinese) |
中文摘要 | 本研究旨在建立茶葉中三類農藥多重殘留之分析法及檢測市售茶葉之農藥殘留情形。依試驗結果,茶葉加水攪拌,以乙腈萃取後,分三部分前處理:第一部分檢測有機磷農藥,以C18固相萃取匣淨化,以丙酮溶解定容,以GC-FPD儀器定性定量分析,以GC-MS儀器確定分析;第二部分檢測有機氯農藥,以正己烷溶解,以矽酸鎂固相萃取匣淨化,以丙酮溶解定容,以GC-FPD定性定量分析及GC-MS確定分析;第三部分則檢測氯基甲酸鹽農藥,以甲醇/二氯甲烷溶解,以氯基固相萃取匣淨化,以甲醇溶解定容,再以HPLC定性定量分析及LC-MS確定分析。另進行三類農藥添加於茶葉之回收率試驗及定量分析之檢量線,皆可得到高的相關係數。上述方法,分別可同時檢測33種有機磷農藥、15種有機氯農藥及8種氨基甲酸鹽農藥。最後以高屏地區市場購得之10個烏龍茶樣本,依上述方法進行農藥殘留量分析,結果有機磷,有機氯及氨基甲酸鹽皆為殘留陰性(即皆未檢出),除了2個茶樣本分別有檢測到農藥微量殘留,經GC-MS確認分別為Permethrin及Cypermethrin,Permethrin之殘留量介於容許量及儀器檢測感度之間,屬合格,但Cypermethrin為不得檢出,故其不合格率為1/10。 |
英文摘要 | The present study is to establish a method for determination of three kinds of pesticides and further monitor their residues in Marketing teas in Southern Taiwan. After addition of water, the teas were subjected to extraction with acetonitrile. The extracts were divided into three pre-treatments. Parts of extract were loaded on a C18 solid-phased cartridge and eluted with acetone. The eluents were used to quantitative and qualitative analysis of organophosphoric pesticides by a GC-FPD and GC-MS, respectively. Parts of extracts wre dissolved with n-hexane and then loaded on a solid-phased cartridge of magnesium silicate and eluted with acetone. The eluents were applied to quantitative and qualitative analysis of organochloric pesticides by a GC-ECD and GC-MS, respectively. Parts of extracts were dissolved with a mixture of methanol/dichloromethane and then loaded on an amino solid-phased cartridge of magnesium silicate and eluted with methanol. The eluents were used to quantitative and qualitative analysis of carbamate pesticides by a HPLC and LC-MS, respectively. The established method with suitable spiked recovery (%) and correlation coefficient (r) of constructed calibration curve are reasonable for simultaneous determination of 33 organophosphoric pesticides, 15 organochloric pesticides, and 8 carbamate pesticides. After survey of pesticide residues in 10 U-Long teas purchased from local market in Kao-Ping district, negative detections of organophosphoric, organochloric and carbamate pesticides were found in all samples. Nevertheless, 2 pesticides were detected in 2 tea samples. After verification by a GC-MS, the pesticides were found to be permethrin (1/10) and cypermethrin (1/10). Accordingly, the results showed 1/10 positive residue ratio based on allowance of residue declared. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。