T/GBC 96-2025 Active Group standards

T/GBC 96-2025 Determination of 5 odorant heterocyclic compounds in Liu Bao Tea by headspace-solid phase microextraction/gas chromatography-mass spectrometry

Publish Date: 2025-09-29 Implement Date: 2025-10-29 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/GBC 96-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Heavy metals and their alloys

ICS Name: Drinks in general

Publish Date: 2025-09-29

Implement Date: 2025-10-29

Scope

This document specifies the headspace-solid phase microextraction/gas chromatography-mass spectrometry method for determining the content of five odor-causing heterocyclic compounds, including 2,5-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, indole, and 3-methylindole, in Liubo tea. This document is applicable to the determination of the content of five odor-causing heterocyclic compounds, including 2,5-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, indole, and 3-methylindole, in Liubo tea. When the sampling amount is 0.1g and the dispensing volume is 10.0mL, and the quantification is performed using the selected ion scanning mode, the detection limits of 2,5-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, indole, and 3-methylindole are 0.4μg/kg, 1.5μg/kg, 1.4μg/kg, 0.8μg/kg, 2.0μg/kg, respectively, and the determination limits are 1.6μg/kg, 6.0μg/kg, 5.6μg/kg, 3.2μg/kg, 8.0μg/kg, respectively. This document is applicable to the determination of the content of five odor-causing heterocyclic compounds, including 2,5-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, indole, and 3-methylindole, in Liubo tea. When the sampling amount is 0.1g and the dispensing volume is 10.0mL, and the quantification is performed using the selected ion scanning mode, the detection limits of 2,5-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, indole, and 3-methylindole are 0.4μg/kg, 1.5μg/kg, 1.4μg/kg, 0.8μg/kg, 2.0μg/kg, respectively, and the determination limits are 1.6μg/kg, 6.0μg/kg, 5.6μg/kg, 3.2μg/kg, 8.0μg/kg, respectively.