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Determination of nitrite content in food by chronoamperometry
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Jun-Nan SONG1, Chen-Guang WANG2, Dan-Dan LIU1, *, Qian-Qian XIE1, *
Journal of Food Safety & Quality | 2025, 16(7) : 109 - 115
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Journal of Food Safety & Quality | 2025, 16(7): 109-115
• Special Topic: Analysis and Monitoring of Toxic and Harmful Substances in Food •
Determination of nitrite content in food by chronoamperometry
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Jun-Nan SONG1, Chen-Guang WANG2, Dan-Dan LIU1, *, Qian-Qian XIE1, *
Affiliations
  • 1. Standard Sci-tech Innovation (Qingdao) Pharmaceutical Technology Co., Ltd., Qingdao 266000, China
  • 2. Tianjin Customs Industrial Product Safety Technology Center, Tianjin 300041, China
Published: 2025-04-15 doi: 10.19812/j.cnki.jfsq11-5956/ts.20250103006
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Objective To establish a chronoamperometry detection method for accurately determining the nitrite content in food. Methods Cobalt nanoparticles, graphene oxide, and polypyrrole were electrodeposited on the electrode surface to construct an electrochemical sensor for nitrite detecting. The detection conditions were optimized, and the linear range of chronocurrent method for nitrite detection was determined. After the specificity of the detection method was verified, the samples were tested using the optimized detection conditions. Results An electrochemical sensor for nitrite detection was prepared. The optimal potential for this method was 0.85 V, the optimal pH was 8.0, and the optimal deposition time was 300 s. The interfering substances dopamine, ascorbic acid and uric acid had little impact on the detection of nitrite, and the detection of samples found that the established method had high accuracy. Conclusion An electrochemical sensor for detecting nitrite is prepared, which has good stability and high accuracy, and is suitable for the determination of nitrite content food.

cobalt nanoparticles  /  grapheme oxide  /  nitrite  /  electrochemistry  /  chronoamperometry
Jun-Nan SONG, Chen-Guang WANG, Dan-Dan LIU, Qian-Qian XIE. Determination of nitrite content in food by chronoamperometry[J]. Journal of Food Safety & Quality, 2025 , 16 (7) : 109 -115 . DOI: 10.19812/j.cnki.jfsq11-5956/ts.20250103006
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Year 2025 volume 16 Issue 7
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Article Info
doi: 10.19812/j.cnki.jfsq11-5956/ts.20250103006
  • Receive Date：2025-01-03
  • Online Date：2025-07-19
  • Published：2025-04-15
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  • Received：2025-01-03
Affiliations
    1. Standard Sci-tech Innovation (Qingdao) Pharmaceutical Technology Co., Ltd., Qingdao 266000, China
    2. Tianjin Customs Industrial Product Safety Technology Center, Tianjin 300041, China
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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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