首页|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

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

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目的 采用ICP-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45Sc、115In、185Re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》(GB 4806.4-2016)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》(GB 9685-2016),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0.000 5 mg/kg~0.008 mg/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0.000 5 mg/kg~12.3 mg/kg,其中铝元素迁移量最高(12.3 mg/kg),其次是钡3.49 mg/kg和锰2.88 mg/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.
Simultaneous determination of 25 elements'migration in food-contact redware products by inductively coupled plasma mass spectrometry
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 45Sc,115In and 185Re as internal 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 0.000 5 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 0.000 5 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.

Redware productMetal elements migrationInductively coupled plasma mass spectrometryFood contact

王艳敏、李娟、熊丽、彭文芳

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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

紫砂制品 金属迁移 电感耦合等离子体质谱 食品接触

江西省卫生健康委科技计划项目江西省重点实验室计划项目

20221129520171BCD40021

2023

中国卫生检验杂志
中华预防医学会

中国卫生检验杂志

影响因子:0.771
ISSN:1004-8685
年,卷(期):2023.33(22)
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