Method for detecting residual quantity of chlorophenol persistent organic pollutants in animal and vegetable oil

• Main Authors: TANG SUIPING, ZHOU YONG, QI YAN, LI JINQING
• Format: Patent
• Language: Chinese; English
• Published: 06.08.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for detecting residual quantity of chlorophenol persistent organic pollutants in animal and vegetable oil. The method comprises the steps of by taking animal oil and vegetable oil as research objects, extracting by using an alkaline methanol solution, degreasing by using n-hexane, purifying by using a mixed anion exchange solid-phase extraction column; after nitrogen blowing concentration and acidified methanol-water solution redissolution, using a UPLC/MS-IT-TOF method for detection, and using a 13C6-pentachlorophenol internal standard method for quantification. The method is simple and rapid, the recovery rate is high, qualitative identification is accurate, and the defect that qualitative identification of polychlorophenol substances is inaccurate through a liquid chromatography-tandem mass spectrometry method is overcome. 本发明公开了一种动植物油脂中氯苯酚类持久性有机污染物残留量的检测方法，该方法以动物油脂和植物油脂为研究对象，采用碱性甲醇溶液提取，正己烷脱脂，混合型阴离子交换固相萃取柱净化，经氮吹浓缩、酸化甲醇-水溶液复溶后用UPLC/MS-IT-TOF法检测，13C6-五氯苯酚内标法定量，该方法简单快速、回收率高、定性