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Optimization and Comparative Study of Iodine Content Detection Method in Milk Based on Gas Chromatograph
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Yawei HUANG, Xiaofeng HOU, Wenyan CAO*, Meina WANG, Xiao ZHANG, Jianjun MA, Jing ZHAI
China Dairy | 2026, (3) : 80 - 87
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China Dairy | 2026, (3): 80-87
• QUALITY CONTROL •
Optimization and Comparative Study of Iodine Content Detection Method in Milk Based on Gas Chromatograph
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Yawei HUANG, Xiaofeng HOU, Wenyan CAO*, Meina WANG, Xiao ZHANG, Jianjun MA, Jing ZHAI
Affiliations
  • Baoding Mengniu Beverage Co., Ltd., Hebei Province Key Laboratory of Intelligent Testing Technology for Dairy Products, Baoding Hebei 072450
Published: 2026-03-25 doi: 10.12377/1671-4393.26.03.12
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[Objective]

This study focused on the optimization of the sample pretreatment process for the determination of iodine content in food by gas chromatography stipulated in "GB 5009.267—2020 Food Safety National Standard Determination of Iodine in Food", aiming to reduce the detection cost, shorten the detection time, and improve the detection efficiency and accuracy.

[Method]

Replace the separatory funnel with a centrifuge tube to reduce the sample weighing, increase the number of vortexing and centrifugation, and optimize the amount of butanone added to explore the optimal detection method.

[Result]

The optimized gas chromatography method demonstrated excellent performance in terms of recovery rate, precision, repeatability and detection limit when compared with the gas chromatography method specified in the national standard.

[Conclusion]

By overcoming the cumbersome problem of pretreatment, the optimized gas chromatography method was possible to accurately and quickly determine the iodine content in milk, and it was suitable for the large-scale detection of iodine content in milk.

iodine  /  milk  /  Gas Chromatography (GC)
Yawei HUANG, Xiaofeng HOU, Wenyan CAO, Meina WANG, Xiao ZHANG, Jianjun MA, Jing ZHAI. Optimization and Comparative Study of Iodine Content Detection Method in Milk Based on Gas Chromatograph[J]. China Dairy, 2026 , (3) : 80 -87 . DOI: 10.12377/1671-4393.26.03.12
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Year 2026 volume Issue 3
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doi: 10.12377/1671-4393.26.03.12
  • Online Date：2026-08-20
  • Published：2026-03-25
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    Baoding Mengniu Beverage Co., Ltd., Hebei Province Key Laboratory of Intelligent Testing Technology for Dairy Products, Baoding Hebei 072450
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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