| 电感耦合等离子体质谱法测定植物性农产品中碘含量 |
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| 引用本文： | 孔红玲,平华,马智宏,王北洪,申建真,杜远芳,刘静.电感耦合等离子体质谱法测定植物性农产品中碘含量[J].食品安全质量检测技术,2018,9(17):4521-4526. |
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| 作者姓名： | 孔红玲 平华 马智宏 王北洪 申建真 杜远芳 刘静 |
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| 作者单位： | 北京农业质量标准与检测技术研究中心农业农村部农产品质量安全风险评估实验室(北京) |
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| 基金项目： | 北京市农林科学院科技创新能力建设专项(KJCX20180301, KJCX20170302)、国家食用菌产品质量安全风险评估专项(GJFP2018006)、北京市优秀人才项目(2015000020060G131) |
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| 摘 要： | 目的建立了电感耦合等离子体质谱法(inductivelycoupled plasma-mass spectrometry,ICP-MS)测定植物性农产品中碘含量。方法样品中加入碳酸钾和硫酸锌,采用干灰化法破坏有机物,固定样品中的碘,利用电感耦合等离子体质谱仪在标准模式和碰撞模式下测定植物性农产品中碘的含量。结果碘标准溶液在1.0~15.0μg/L质量浓度范围内线性关系良好,标准模式和碰撞模式下相关系数(r)分别为0.9999和0.9998。不同基质样品在3个不同添加水平下的回收率在86.9%~103.1%之间,相对标准偏差在0.88%~3.06%之间,符合要求。2种测定模式下的方法检出限一致,红薯为0.005 mg/kg、西红柿和豇豆为0.003 mg/kg。测定的国家有证标准物质(GBW 10020和GBW 10023)中碘的含量,测定值均在标准值不确定度范围内。结论与传统的硫氰酸铁-亚硝酸催化动力学法相比,该方法操作简便、节省试剂、稳定性好、精密度高、检出限低,大大提高了检测效率,适用于植物性农产品中碘含量的快速、准确定量分析。
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| 关 键 词： | 电感耦合等离子体质谱法 植物性 农产品 碘 |
| 收稿时间： | 2018/6/27 0:00:00 |
| 修稿时间： | 2018/8/28 0:00:00 |
Determination of iodine content in vegetalitas agricultural products by inductively coupled plasma mass spectrometer |
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| KONG Hong-Ling,PING Hu,MA Zhi-Hong,WANG Bei-Hong,SHENG Jian-Zhen,DU Yuan-Fang and LIU Jing.Determination of iodine content in vegetalitas agricultural products by inductively coupled plasma mass spectrometer[J].Food Safety and Quality Detection Technology,2018,9(17):4521-4526. |
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| Authors: | KONG Hong-Ling PING Hu MA Zhi-Hong WANG Bei-Hong SHENG Jian-Zhen DU Yuan-Fang and LIU Jing |
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| Affiliation: | Beijing Research Center for Agricultural Standards and Testing Risk,Assessment Lab for Agro-products Beijing,Ministry of Agriculture and Rural Affairs,Beijing Research Center for Agricultural Standards and Testing Risk,Assessment Lab for Agro-products Beijing,Ministry of Agriculture and Rural Affairs,Beijing Research Center for Agricultural Standards and Testing Risk,Assessment Lab for Agro-products Beijing,Ministry of Agriculture and Rural Affairs,Beijing Research Center for Agricultural Standards and Testing Risk,Assessment Lab for Agro-products Beijing,Ministry of Agriculture and Rural Affairs,Beijing Research Center for Agricultural Standards and Testing Risk,Assessment Lab for Agro-products Beijing,Ministry of Agriculture and Rural Affairs,Beijing Research Center for Agricultural Standards and Testing Risk,Assessment Lab for Agro-products Beijing,Ministry of Agriculture and Rural Affairs,Beijing Research Center for Agricultural Standards and Testing Risk,Assessment Lab for Agro-products Beijing,Ministry of Agriculture and Rural Affairs |
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| Abstract: | |
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| Keywords: | inductively coupled plasma-mass spectrometry vegetalitas agricultural products iodine |
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