| abstract |
The invention belongs to the field of detection and analysis, and discloses a method for simultaneously detecting diisopropylnaphthalenes (DiPN), polychlorinated biphenyls (PCBs), phthalates (PAEs) and photoinitiators (PIs), including: (1) Pretreating the sample according to method I or II to obtain a pretreatment; Method I: soaking the sample with water, and then mixing with acetonitrile; Method II: soaking the sample with acetonitrile-water mixture; (2) mixing the pretreatment with water Mix the n-hexane-ethyl acetate mixed solution, let stand, and take the upper layer solution; (3) mix the upper layer solution and the dispersed solid phase extraction agent in a weight ratio of 1:(0.1～1), and separate to obtain a liquid phase substance; disperse the solid phase extractant The phase extraction agent is composed of magnesium sulfate and N-propyl ethylenediamine in a weight ratio of (1～8):1; (4) gas chromatography-triple quadrupole tandem mass spectrometry detects the liquid phase to obtain the detection result. The method of the invention can detect the aforementioned four types of compounds simultaneously, and has the advantages of high detection speed, high accuracy and high sensitivity. |