摘要
建立了气相色谱-串联质谱快速检测塑料菜板中多环芳烃的方法。样品经液氮冷冻研磨,甲苯超声提取、离心、旋转蒸发后,用气相色谱-质谱仪进行测定,外标法定量。采用DB-5MS柱进行分离,进样口温度280℃,氦气流速1.0 ml/min。检测结果表明:16种多环芳烃在0.1～10.0 mg/L浓度范围内呈良好的线性关系,方法的检出限(S/N=3)为0.03 mg/L,定量限(S/N=10)为0.1 mg/L,平均回收率为79.0%～97.0%,相对标准偏差(n=6)为5.2%～9.9%。该方法具有优异的灵敏度和稳定性,满足塑料菜板中多环芳烃的分析检测和准确定量。
A method for the rapid detection of polycyclic aromatic hydrocarbons in plastic cabbage by gas chromatography-tandem mass spectrometry was established. The samples were frozen and ground with liquid nitrogen, extracted by ultrasonic extraction, centrifugation, rotary evaporation, and determined by gas chromatography-mass spectrometer. The samples were separated by DB-5MS. The temperature of injection was 280 ℃ and the flow of helium was 1.0 mL/min. 16 polycyclic aromatic hydrocarbons present a good linear relationship within the range of concentration of 0.1~10.0 mg/L, the detection limit of the method(LOD, S/N=3) is 0.03 mg/L, and the quantitative limit(LOQ, S/N=10) is 0.1 mg/L. The average recovery rate is 79.3%~97.33%, and the relative standard deviation(n=6) is 5.2%~9.9%. The method has excellent sensitivity and stability, and can be used for the analysis, detection and accurate quantification of polycyclic aromatic hydrocarbons in plastic cutting board.
作者
丁枫芸
马洁清
陶艳侠
陈可君
王佳琨
卢伦
Ding Fengyun;Ma Jieqing;Tao Yanxia;Chen Kejun;Wang Jiakun;Lu Lun(Hangzhou Institute of Calibration and Testing for Quality and Technical Supervision, Hangzhou 310019, China;Hangzhou Qianjiang Talent Development Limited Company, Hangzhou 310000, China)
出处
《塑料科技》
CAS
北大核心
2019年第2期73-76,共4页
Plastics Science and Technology
基金
2018年杭州市农业与社会发展科研计划项目(食品接触用木竹制品中有害物质的研究及风险监测)(20180533B21)
