2 results about "Pentachlorobenzene" patented technology

The present application relates to the determination of pentachlorothiophenol in rubber, comprising the following steps: (1) pyrolysis gas chromatography mass spectrometry test standard solution; (2) draw standard curve; (3) sample test; (4) sample qualitative judgment; (5) sample quantitative calculation result. The present application optimizes the quantitative method of pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) for detecting the content of pentachlorothiophenol in rubber products, and quickly confirms the content of pentachlorothiophenol in rubber products.

The application provides a method for determining pentachloroanisole in wooden materials by QuEChERS-gas chromatography-tandem mass spectrometry. Specifically, the method comprises the following steps: after the wooden food contact material is crushed, water and zirconium dioxide balls are added for ultrasonic extraction, then acetonitrile and a salting-out reagent composed of magnesium sulfate and sodium chloride are added, and after oscillation and centrifugation, an extraction solution is obtained; the extraction solution is purified by using a dispersive solid phase extraction method, wherein the dispersive adsorbent at least comprises graphitized carbon black and ethylenediamine-N-propyl silylated silica gel; and detection is performed by using a gas chromatography-tandem mass spectrometer in a multiple reaction monitoring mode. The method is simple in operation, high in sensitivity and strong in specificity, and is suitable for determining pentachloroanisole in wooden food contact materials.