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GB/T 29493.4-2023 English PDF (GBT29493.4-2023)

GB/T 29493.4-2023 English PDF (GBT29493.4-2023)

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GB/T 29493.4-2023: Determination of harmful substances in textile dyeing and finishing auxiliaries - Part 4: Determination of polycyclic aromatic hydrocarbons(PAHs)
This document describes a method for the determination of PAH compounds in textile dyeing and finishing auxiliaries using gas chromatography-mass spectrometry (GC-MS). This document is applicable to the determination of 24 polycyclic aromatic hydrocarbon compounds (see Annex A) in textile dyeing and finishing auxiliaries.

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