Determination of Residual Pesticides in Bean Sprout

콩나물의 잔류농약 분석

This study was performed to investigate the content of residual pesticides in bean sprouts which are the very important vegetables to supply protein for traditional korean dishes. Experimental subjects included 541 cases of bean sprouts and 168 cases of germinating beans collected in the Seoul area from January in 1987 to February in 1938. In residual pesticides of subjects, topsin-M, vitavax and thiram were determined by high pressure liquid chromatography and captan was determined by gas chromatography. The detection rates of residual pesticides in the subjects were 19.4% in bean sprouts and 26.2% in germinating beans. The most common used pesticides in bean sprouts was topsin-M and detection rate was 16.2%. Captan and vitavax were also detected in about 3.5%, 2.8% of the experimental subjects respectively. But thiram was not detected in any samples. The mean value of topsin-M content was $21.32{\pm}4.82ppm$ and $1.68{\pm}0.14ppm$ in bean sprouts. The mean value of captan were $7.70{\pm}2.13ppm$ and $0.42{\pm}0.02ppm$ in germinating beans and bean sprouts, respectively.

시판 콩나물중 농약 잔류량을 측정하기 위한 신속 간편한 분석방법을 검토하고 서울시내 소재 콩나물 제조업소 및 시중에서 1987년 1월부터 1988년 2월에 걸쳐 콩나물 541건, 발아콩 168건을 구득하여 콩나물 재배시 주로 사용되는 것으로 알려진 Topsin-M, Vitavax, Thiram, Captan을 HPLC와 GLC로 분석하였다. Topsin-M, Vitavax, Thiram은 HPLC로 동시에 신속하고 양호하게 분리할 수 있었으며, Captan은 GLC로 타 성분의 방해없이 깨끗이 분리할 수 있었다. 농약이 검출된 시료는 콩나물 105건(19.4%), 발아콩 44건(26.2%) 이었다. 농약 성분별로는 Topsin-M 115건 $(7.65{\pm}2.71ppm)$, Vitavax 20건 $(2.27{\pm}0.42ppm)$, Captan 25건 $(2.17{\pm}0.93ppm)$이었고 Thiram은 검출되지 않았으며 그중 Topsin-M과 Vitavax가 동시에 검출된 시료는 11건 이었다.