首页|电感耦合等离子体质谱(ICP-MS)法测定可生物降解胶带中重金属含量

电感耦合等离子体质谱(ICP-MS)法测定可生物降解胶带中重金属含量

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为弥补标准检测方法的不足,本研究建立了 ICP-MS法同时检测可生物降解胶带中砷、镉、钴、铬、铜、镍、钼、铅、硒、锌、汞11种重金属元素的方法.可生物降解胶带样品0.2 g,在硝酸中微波消解,消解结束后冷却至室温,取出消解罐放在控温电热板上,于120℃加热30 min,用3％的稀硝酸将消解液定容至50 mL.采用ICP-MS对样品进行分析,结果显示:11种元素的方法检出限(LOD)为 0.0044～0.6565 mg/kg,方法定量限(LOQ)范围为 0.0148～2.1882 mg/kg.在 0～50 μg/L 范围内线性回归系数(R2)在 0.9991～1.0000,各元素加标回收率在80％～115％.本研究确定了样品前处理和仪器分析条件,实现了检测方法的确认和实际样品的检测.研究结果表明:本研究确定的方法灵敏度高,准确性和精密度良好,可同时测定可生物降解胶带中多种重金属元素.
Determination of Heavy Metals in Biodegradable Tapes by Inductively Coupled Plasma Mass Spectrometry(ICP-MS)
In order to make up for the shortage of standard detection methods,this study established an ICP-MS method for the simultaneous determination of 11 heavy metals in biodegradable tapes,including As,Cd,Co,Cr,Cu,Ni,Mo,Pb,Se,Zn and Hg.0.2 g of biodegradable tape sample was microwave-assisted in nitric acid.After digestion,the sample was cooled to room temperature.The digestion tank was removed and placed on a temperature controlled electric heating plate.The sample was heated at 120 ℃ for 30 minutes,and the digestion solution was made up to 50 mL with 3％dilute nitric acid.ICP-MS was used to analyze the samples,and the results showed that the detection limit(LOD)of the 11 elements was 0.0044～0.6565 mg/kg,and the method quantification limit(LOQ)range was 0.0148～2.1882 mg/kg.The linear regression coefficients(R2)were in the range of 0.9991～1.0000 in the range of 0～50 pg/L.The recoveries of each element spiked were in the range of 80％～115％.In this study,the sample pretreatment and instrumental analysis conditions were determined,and the confirmation of the assay method and the detection of the actual samples were achieved.The results showed that the method determined in this study is sensitive,with good accuracy and precision,and can simultaneously determine a variety of heavy metals in biodegradable tapes.

biodegradable tapeheavy metal elementsICP-MSmethod confirmation

蔡佳梓、宋杰、梁其湛、陈妙兰、郭琳

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广东江门中医药职业学院,广东江门 529000

广东省江门市质量计量监督检测所,广东江门 529000

江门市健康产品工程技术研究中心,广东江门 529000

北京衡昇仪器有限公司,北京 100000

五邑大学环境与化学工程学院,广东江门 529000

江门市食品检测所,广东江门 529000

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可生物降解胶带 重金属 ICP-MS 方法确认

广东省市场监督管理局科研攻关项目广东省教育厅教育科学规划课题高等教育专项江门市科技计划五邑大学大学生创新创业训练计划五邑大学大学生创新创业训练计划五邑大学大学生创新创业训练计划

2023ZZ102023GXJK5202022JC010092020CX232022113492062023111500000415

2024

10.3969/j.issn.1007-1865.2024.06.041

广东化工
广东省石油化工研究院

广东化工

影响因子：0.288
ISSN：1007-1865
年,卷(期)：2024.51(6)
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