海南市售蕹菜重金属含量分析  

Analysis of Heavy Metal Content of Water Spinach for Sale in Hainan

作　　者：李南 吴含秀 韦盈 梁晓涵 邢东海 吴月仙 LI Nan;WU Hanxiu;WEI Ying;LIANG Xiaohan;XING Donghai;WU Yuexian(Wuzhishan Branch of Hainan Academy of Inspection and Testing,Wuzhishan 572200,China;Institute of Food Testing,Hainan Academy of Inspection and Testing,Key Laboratory of(Tropical Fruits and Vegetables Quality and Safety)for State Market Regulation,Haikou 570314,China)

机构地区：[1]海南省检验检测研究院五指山分所,海南五指山572200 [2]海南省检验检测研究院食品检验检测中心,国家市场监管重点实验室(热带果蔬质量与安全),海南海口570314

出　　处：《食品安全导刊》2024年第24期75-78,83,共5页China Food Safety Magazine

基　　金：国家市场监管重点实验室(热带果蔬质量与安全)基础应用研究课题(KF-2023020)。

摘　　要：采用内梅罗综合和单因子污染指数法,以海南省18个市县连续采集的108份市售蕹菜试样材料作为研究对象。电感耦合等离子体质谱技术同时测定蕹菜中As、Cd、Hg、Pb、Cr、Ni、Zn和Cu这8种元素的含量。结果表明,该方法回收率为90.8%~106.0%,相对标准偏差为0.41%~1.14%;在0~100μg·L^(-1)浓度范围内,线性良好,方法简单便捷可行;蕹菜中8种元素均值为0~2.5 mg·kg^(-1),其中Zn平均含量最高为2.5 mg·kg^(-1),Hg未检出;各元素的内梅罗综合和单因子污染指数均小于0.7。18个市县蕹菜各元素平均含量均低于限值;海南市售蕹菜并未被重金属污染,均为合格蔬菜,属于食品安全水平。本研究可为海南食品安全风险提供数据支撑及参考,同时可为海南市售蕹菜的种植和食用提供指导。Using the Nemerow comprehensive and single factor pollution index methods,the heavy metal content of 108 water spinach samples collected from 18 cities and counties in Hainan province was analyzed.Inductively coupled plasma mass spectrometry was used to simultaneously determine the content of 8 elements including As,Cd,Hg,Pb,Cr,Ni,Zn and Cu in water spinach.The results showed that the recovery rate of this method was 90.8%~106.0%,relative standard deviation 0.41%~1.14%;the average value of 8 elements in water spinach ranged from 0~2.5 mg·kg^(-1),with the highest content of Zn was 2.5 mg·kg^(-1)and Hg not detected;the Nemerow comprehensive and single factor pollution index of all elements were less than 0.7.In the concentration range of 0~100μg·L^(-1),the linearity was good,and the method was simple,convenient and feasible.The average content of elements in water spinach in 18 cities and counties did not exceed the limit value.The commercially available water spinach sold in Hainan province was not polluted by heavy metals,and all were qualified vegetables,belonging to the level of food safety.This study could provide data support and reference for the food safety risk in Hainan province,and also provide guidance for the planting and consumption of water spinach in Hainan.

关 键 词：蕹菜 重金属 电感耦合等离子体质谱技术 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程]