CAJ | 학술논문

利用选择离子法(SIM)对汽油中含氧化合物、苯和甲苯进行定量分析,可以简化分析步骤,缩短分析时间,有效消除汽油中复杂成分对目标组分分析结果的影响,提高了分析结果的准确性.15种组分标准曲线的线性相关系数均大于0.998 8,最低检测限为2～5 μg·g~(-1),回收率为90%～103%,保留时间相对标准偏差小于0.5%,峰面积相对标准偏差小于11.05%.
이용선택리자법(SIM)대기유중함양화합물、분화갑분진행정량분석,가이간화분석보취,축단분석시간,유효소제기유중복잡성분대목표조분분석결과적영향,제고료분석결과적준학성.15충조분표준곡선적선성상관계수균대우0.998 8,최저검측한위2～5 μg·g~(-1),회수솔위90%～103%,보류시간상대표준편차소우0.5%,봉면적상대표준편차소우11.05%.
A method for the simultaneous quantitative analysis of oxygenates, benzene and toluene in gasoline was developed by gas chromatography-mass chromatogram(GC/MS). The GC separation was performed on a quartz capillary(0.25 μm×0.25 mm×60 m) column with Ar at the flow rate of 0.65 mL·min~(-1). Selected ion monitoring mode and mass chromatogram were used for the quantitative detection of oxygenates, benzene and toluene in gasoline. An internal standard method was used for the quantification with butanone(MEK) and ethylene glycol dimetnyl ether(DME) as the double internal standard. For 15 components, the correlation coefficients of the calibration curve are greater than 0.998 8, the detection limits are 2-5 mg·L~(-1) and the value of recoveries are larger than 90%. Relative standard deviation of retention time is less than 0.5%. The area relative standard deviation is less than 11.05%.