GB/T 24893-2025 Animal and vegetable fats and oils—Determination of polycyclic aromatic hydrocarbons

Scope

This document describes a method for determining 15 polycyclic aromatic hydrocarbons (PAHs) in animal and plant oils using high-performance liquid chromatography (HPLC). It defines the definition of PAHs, provides the principle of the determination method, reagents, instruments and equipment, general pretreatment methods for animal and plant oils, pretreatment methods for coconut oil and plant oils containing short-chain fatty acids, determination steps, result presentation, and precision.
This document is applicable to the determination of PAHs in general animal and plant oils, as well as coconut oil and plant oils containing short-chain fatty acids.
This document is not applicable to the quantitative analysis of highly volatile components such as naphthalene, acenaphthene, and fluorene.
This document is not applicable to the determination of PAHs in palm oil and olive pomace oil due to matrix interference.
Note: The results in Appendix A indicate that this determination method is not applicable to olive pomace oil.
This document is not applicable to the determination of PAHs in milk and dairy products (or fats from milk and dairy products).
The quantitative detection limits for fluorene and benzo[g,h,i]perylene are 0.3μg/kg, and for indeno[1,2,3-c,d]pyrene they are 1.0μg/kg.
The quantitative detection limits for the remaining PAHs are all 0.2μg/kg.

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