CAJ | 학술논문

建立了全自动固相萃取–气相色谱–质谱联用测定水中苯并芘的方法。优化了全自动固相萃取条件，选择C8固相萃取柱萃取水样品中的苯并芘，样品中加入甲醇以增强苯并芘在萃取柱上的保留能力，采用正压大体积六通道同时进样，进样体积为1000 mL，进样流量20 mL／min，使用二氯甲烷为洗脱溶剂，浓缩至0.5 mL。水中苯并芘的质量浓度在10～200μg／L范围内与其质谱响应值线性关系良好，相关系数为0.995，检出限为2 ng／L。在20～200μg／L加标水平上，苯并芘回收率为85.0%～94.5%，测定结果的相对标准偏差均小于6%(n=6)。该方法操作简单、测定结果准确，可用于水中苯并芘的测定。
건립료전자동고상췌취–기상색보–질보련용측정수중분병비적방법。우화료전자동고상췌취조건，선택C8고상췌취주췌취수양품중적분병비，양품중가입갑순이증강분병비재췌취주상적보류능력，채용정압대체적륙통도동시진양，진양체적위1000 mL，진양류량20 mL／min，사용이록갑완위세탈용제，농축지0.5 mL。수중분병비적질량농도재10～200μg／L범위내여기질보향응치선성관계량호，상관계수위0.995，검출한위2 ng／L。재20～200μg／L가표수평상，분병비회수솔위85.0%～94.5%，측정결과적상대표준편차균소우6%(n=6)。해방법조작간단、측정결과준학，가용우수중분병비적측정。
A method for determination of benzoapyrene in water was established by using fully automatic solid phase extraction and gas chromatography–mass spectrometry. Automatic solid phase extraction conditions were optimized. Benzoapyrene in water samples was extracted with C8 solid–phase extraction cartridges by adding methanol to enhance benzopyrene retention capacity on solid phase extraction column. The positive pressure big volume six channel sampling at the same time was selected, the sample volume was 1 000 mL with the flow rate of 20 mL/min. Dichloromethane was used as elute solvent which was concentrated to 0.5 mL at last. The result showed that the concentration of benzopyrene in water was linear with its mass response value in the range of 10–200μg/L,with correlation coefficient of 0.995. The detection limit was 2 ng/L. The relative standard deviation of determination results was less than 6%(n=6). The recovery rate ranged from 85%to 94.5%in the 20–200μg/L standard addition level. The method is simple,accurate,and it is suitable for the determination of benzopyrene in water.