Headspace Solid Phase Microextraction-Gas Chromatography/Mass Spectrometry를 이용한 비타민드링크 제품 중 Benzene의 미량분석

Abstract

determined using headspace solid phase microextraction (HS-SPME) and gas chromatography-mass spectrometry(GC-MS). The sample (25 ml) was stirred at 1200 rpm for 4 min using a magnetic bar with a 100 m SPMEfiber as an adsorbent for benzene which was then desorbed from the fiber for 1 min in the GC injector.Quantitation was achieved using the standard addition method. The limit of detection was determined as 0.56ng/ml and over a concentration range 0-40 ng/ml the coefficient of correlation was greater than 0.999. Thedetected in 15 of the drinks with concentration in 5 of them greater than 10 ng/ml which is the limit set forthe presence of benzene in the Drinking Water Regulations. The concentrations of benzene in the 5 drinkswhich exceeded the limit of 10 ng/ml were 16.99, 35.14, 16.03, 47.35 and 14.28 ng/ml respectively.