湖北农业科学 ›› 2021, Vol. 60 ›› Issue (22): 160-163.doi: 10.14088/j.cnki.issn0439-8114.2021.22.034

• 检测分析 • 上一篇    下一篇

皮蛋腌制液中铜离子快速检测技术

张惠贤a, 崔文文a, 王明锐a, 姚晶晶a, 杜金平b, 孙静b, 张昊b   

  1. 湖北省农业科学院,a.农业质量标准与检测技术研究所/农业农村部农产品质量安全风险评估实验室/农产品营养品质与安全湖北省重点实验室; b.畜牧兽医研究所,武汉 430064
  • 收稿日期:2021-07-26 出版日期:2021-11-25 发布日期:2021-12-10
  • 通讯作者: 杜金平(1963-),男,湖北黄冈人,研究员,主要从事家禽健康养殖和蛋品加工研究,(电话)13707154228(电子信箱)13707154228@163.com。
  • 作者简介:张惠贤(1984-),女,河北石家庄人,助理研究员,博士,主要从事农业环境质量安全研究,(电话)13349884920(电子信箱)zhanghuixianto@163.com。
  • 基金资助:
    国家现代农业产业技术体系项目资助(CARS-42-26); 国家农产品质量安全风险评估项目 (GJFP2019039)

Rapid detection technology of copper ion in preserved egg pickling liquid

ZHANG Hui-xiana, CUI Wen-wena, WANG Ming-ruia, YAO Jing-jinga, DU Jin-pingb, SUN Jingb, ZHANG Haob   

  1. a. Institute of Agricultural Quality Standards and Testing Technology Research/Laboratory of Quality & Safety Risk Assessment for Agro-products/Hubei Key Laboratory of Nutritional Quality and Safety of Agro-products; b. Institute of Animal Husbandry and Veterinary,Hubei Academy of Agricultural Sciences,Wuhan 430064,China
  • Received:2021-07-26 Online:2021-11-25 Published:2021-12-10

摘要: 以双环己酮草酰二腙(BCO)为络合试剂,采用紫外-可见分光光度法检测,建立了皮蛋腌制液中Cu(Ⅱ)的快速检测技术,并对BCO络合皮蛋腌制液中的Cu(Ⅱ)的反应条件进行了优化。结果表明,Cu(Ⅱ)浓度在0~2.56 mg/L浓度范围内线性关系良好,相关系数R2为0.999 5,Cu(Ⅱ)在0.12、0.24、0.48和0.72 g/L添加水平的回收率在97.9%~103.4%,日内、日间标准偏差(RSD)低于3.17%。该方法具有很好的灵敏度、准确度和精密度,并将所建立的方法用于实际皮蛋腌制液中Cu(Ⅱ)的检测,为皮蛋腌制过程中Cu(Ⅱ)的实时监测提供有力工具。

关键词: 双环己酮草酰二腙, 分光光度法, 皮蛋腌制液, 高含量铜

Abstract: A rapid method for determination of copper in preserved egg pickling liquid by bis-cyclohexanone oxalyldihydrazone (BCO) coupled with UV-Vis spectrophotometric detection was established. The reaction conditions of copper ion with BCO were optimized. Under the optimized conditions, copper ion presented a good linear relationship in the concentration range of 0~2.56 mg/L with R2 0.999 5. The recoveries of copper ion spiked at 0.12, 0.24, 0.48, 0.72 g/L were between 97.9% and 103.4%, and inter-day and intra-day relarive standard deviation were lower than 3.17%, demonstrating good accuracy and precision of the proposed method. Finally, the proposed method was applied to monitoring the copper sulfate in the actual preserved egg pickling liquid. The established method provides a powerful tool for the real-time monitoring of copper ion during the preservation of preserved eggs.

Key words: bis-cyclohexanone oxalyldihydrazone, spectrophotometric method, preserved egg pickling liquid, high content copper

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