GB/T 41524-2022 Translated English of Chinese Standard (GB/T 41524-2022, GBT41524-2022): Determination of short chain chlorinated paraffins in toy materials - Gas chromatography-mass spectrometry
https://www.chinesestandard.net, 2022 M09 9 - 16 pages
This Document specifies a qualitative and quantitative method for the determination of short-chain chlorinated paraffins in toy materials by gas chromatography-electron capture negative chemical ion source-mass spectrometry. This Document applies to the determination of short-chain chlorinated paraffins with a chlorine atomic number greater than or equal to 5 in toy polymer materials.
according to Formula Appendix calculate the overall capture negative chemical chain chlorinated paraffins chemical ion source-mass chromatography-electron capture negative Coefficient of variation concentrated sulfuric acid constant volume content of SCCPs different chlorine contents Document extract gas chromatography-electron capture gas chromatography-mass spectrometry GB/T gel chromatography column industrial grade injection volume Interlaboratory Test internal standard substance mass fraction measured chlorine content mg/L Microporous filter mixed standard solution n-hexane and toluene negative chemical ion overall relative peak overall response factor Polyvinyl chloride purity is greater qualitative and quantitative Relative molecular mass relative peak area Respectively calculate sample according sample test solution samples with different SCCPs C10 SCCPs mixed standard SCCPs standard sample SCCPs standard solutions shown in Table silica gel chromatography solution with different solvent is n-hexane Soxhlet extraction Soxhlet extractor standard curve standard working solution suitable mass concentration Table C.1 target peak temperature theoretical chlorine content Time/min Time/min Time/min toluene 5.5 toy materials