电感耦合等离子体质谱法同时测定食品接触用紫砂制品中25种元素迁移量  

Simultaneous determination of 25 elements'migration in food-contact redware products by inductively coupled plasma mass spectrometry

作　　者：王艳敏[1] 李娟[1] 熊丽[1] 彭文芳[1] WANG Yan-min;LI Juan;XIONG Li;PENG Wen-fang(Jiangxi Provincial Center for Disease Control and Prevention,Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease,Nanchang,Jiangxi 330029,China)

机构地区：[1]江西省疾病预防控制中心、江西省食源性疾病诊断与溯源重点实验室,江西南昌330029

出　　处：《中国卫生检验杂志》2023年第22期2689-2693,共5页Chinese Journal of Health Laboratory Technology

基　　金：江西省卫生健康委科技计划项目(202211295);江西省重点实验室计划项目(20171BCD40021)。

摘　　要：目的为采用ICP一MS法,建立同时测定紫砂制品中25种元素迁移量的方法,并对江西省市场流通的紫砂制品中金属元素溶出情况进行初步调查。方法以^(45)Sc、^(115)In、^(185)Re作为内标,优化仪器参数,用ICP-MS同时测定紫砂制品浸泡液中25种元素迁移量;依据《食品安全国家标准陶瓷制品》(GB4806.4—2016)和《食品安全国家标准食品接触材料及制品用添加剂使用标准》(CB9685—2016),对紫砂制品中铅、镉、钡、钴、铜、铁、锂、锰和锌元素迁移量进行判定。结果25种元素的检出限为0.0005mg/kg~0.008mg/kg,相关系数(r)≥0.999,精密度(RSD)<5%,加标回收率85.5%~101.4%。共检测99份紫砂餐饮具和烹煮器具,检出率为91.9%,各元素迁移量为0.0005mg/kg~12.3mg/kg,其中铝元素迁移量最高(12.3mg/kg),其次是3.49mg/kg和锰2.88mg/kg;钡和锰迁移量超标率为8.08%,超标样品集中在紫砂壶、紫砂杯和烧水壶。结论该方法准确、灵敏、简便;采集的紫砂制品中大部分元素迁移量较低,但铝、钡和锰元素迁移量偏高,有必要进一步完善相关标准,规范紫砂行业发展。Objective A method for the simultaneous determination of 25 elements'migration in redware products was estab-lished by inductively coupled plasma mass spectrometry(ICP-MS).The dissolution of metal elements in redware products sold in Jiangxi Province was preliminarily investigated.Methods Using ^(45)Sc,^(115)In and ^(185)Re as intermal standards,the instrument parameters were optimized,and the migration of 25 elements in the immersion solution of redware products was determined sim-ultaneously by ICP-MS.According to the National Food Safety Standard for Ceramic Products(GB 4806.4-2016)and the National Food Safety Standard-Standard for the Use of Additives for Food Contact Materials and Products(GB 9685-2016),the migration amounts of lead,cadmium,barium,cobalt,copper,iron,lithium,manganese and zinc in redware products were evaluated.Results The detection limits of 25 elements were within 0.0005 mg/kg-0.008 mg/kg,with the correlation coeffi-cient(r)≥0.999.The precision(RSD)was less than 5%,and the spiked recovery rates ranged from 85.5%to 101.4%.The migration amounts of 99 redware dining utensils and cooking utensils were detected,with the detection rate of 91.9%.The migration volume of each element ranged from 0.0005 mg/kg to 12.3 mg/kg,among which the migration volume of aluminum was the highest(12.3 mg/kg),followed by barium(3.49 mg/kg)and manganese(2.88 mg/kg).The exceeding rate of bari-um and manganese was 8.08%.The samples exceeding the standards were mainly redware teapots,redware cups and boiling pots.Conclusion The method is accurate,sensitive and simple.The migration volume of most elements in the collected red-ware products is low,but the migration amounts of aluminum,barium and manganese are high.It is necessary to further improve the relevant standards to standardize the development of the redware industry.

关 键 词：紫砂制品 金属迁移 电感耦合等离子体质谱 食品接触 

分 类 号：O657[理学—分析化学]