【引用本文】 李攀攀, 崔琬晶, 侯红芳, 等. 自制Z-Ⅱ碘探针应用于快速测定食盐及海带中的无机碘和有机碘[J]. 岩矿测试, 2020, 39(1): 108-114. doi: 10.15898/j.cnki.11-2131/td.201904260049
LI Pan-pan , CUI Wan-jing , HOU Hong-fang , et al. Rapid Determination of Inorganic and Organic Iodine in Edible Salt and Kelp Samples by a Z-Ⅱ Iodine Probe[J]. Rock and Mineral Analysis, 2020, 39(1): 108-114. doi: 10.15898/j.cnki.11-2131/td.201904260049

自制Z-Ⅱ碘探针应用于快速测定食盐及海带中的无机碘和有机碘

1. 天津市海洋资源与化学重点实验室, 天津科技大学化工与材料学院, 天津 300457;

2. 益盐堂(应城)健康盐制盐有限公司, 湖北 武汉 432400

收稿日期: 2019-04-26  修回日期: 2019-08-06 

基金项目: 国家自然科学基金项目"离子膜烧碱生产中高盐卤水体系微量碘净化的热力学与热动力学研究"(21773170);湖北省技术创新专项重大项目"特种食用盐绿色生产关键技术研究"(2019ACA149);天津市自然科学基金重点项目"离子膜烧碱生产中原盐水净化除碘关键技术研究"(18JCZDJC10040);教育部创新研究团队"卤水资源综合利用"(IRT-17R81)

作者简介: 李攀攀,硕士研究生,化学工程与技术专业。E-mail:lipanpan0627@163.com。。

Rapid Determination of Inorganic and Organic Iodine in Edible Salt and Kelp Samples by a Z-Ⅱ Iodine Probe

1. College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China;

2. Eontop(Yingcheng) Healthy Salt Production Co., LTD, Wuhan 432400, China

Received Date: 2019-04-26
Revised Date: 2019-08-06

摘要:目前食盐和海带产品中碘含量分析主要是总碘含量测定,而无机碘与有机碘形态分析主要依靠大型精密仪器联用技术。本文研制了一种基于硫化碘化银法研制的全固态、无内参液的晶体膜电极(Z-Ⅱ碘探针),采用聚四氟乙烯消化罐微波消解技术,建立了食用盐及海带中的无机碘及有机碘含量测定方法。实验结果表明:食盐中无机碘含量为20mg/kg,有机碘含量为2mg/kg,海带中有机碘含量为2.9g/kg。无机碘及有机碘含量分别在10~100mg/kg范围内线性关系良好,加标回收率为97.10%~101.00%,检出限均为1mg/kg。本方法应用于食盐和海带实际样品中的碘含量测定,无机碘和有机碘测定结果的相对标准偏差(RSD)分别小于0.92%和2.49%,且测定结果与国家标准方法和紫外分光光度法的测定结果基本一致。该方法具有试剂耗量少、成本低的特点,操作方便,可应用于有机碘和无机碘含量的测定。

关键词: 探针, 快速测定, 有机碘, 无机碘, 食盐, 海带

Rapid Determination of Inorganic and Organic Iodine in Edible Salt and Kelp Samples by a Z-Ⅱ Iodine Probe

KEY WORDS: probe, rapid determination, organic iodine, inorganic iodine, salt, kelp

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自制Z-Ⅱ碘探针应用于快速测定食盐及海带中的无机碘和有机碘

李攀攀, 崔琬晶, 侯红芳, 郑静雨, 潘秀云, 郭亚飞, 邓天龙