摘要
为准确分析垃圾焚烧飞灰中金属元素含量,解析元素污染特性,建立采用HNO3+HF+HClO4体系湿法消解样品,电感耦合等离子体发射光谱法(ICP-AES)和电感耦合等离子体质谱法(ICP-MS)测定样品中金属元素含量的方法。采用国家标准物质GBW07423模拟基体复杂的垃圾焚烧飞灰样品,验证方法的准确度和精密度,进行过程质量控制。研究结果表明,各元素线性拟合良好,分析结果与标准值吻合。实际样品分析中,ICP-AES测试的相对标准偏差为0.76%~6.91%;ICP-MS测试的相对标准偏差为0.50%~3.40%,测试精密度良好。该方法具有前处理流程简单、多元素同时测定、线性范围宽、分析效率高等优点,可满足不同类型垃圾焚烧飞灰样品中金属元素含量的分析。
Accurate analysis of metal content and pollution characteristics of elements of fly ash provides important scientific basis for comprehensive utilization of resources.A method for the determination of metal elements in waste incineration fly ash samples by inductively coupled plasma-atomic emission spectrometry(ICP-AES)and inductively coupled plasma mass spectrometry(ICP-MS)with HNO3+HF+HClO4 system was established.The national standard substance GBW07423 was used to simulate the fly ash samples with complex matrix.The accuracy and precision of the method were verified and the process quality control was carried out.The results show that the linear fitting of each element is good,and the analysis results are in good agreement with the standard values.In actual sample analysis,the relative standard deviation of ICP-AES test is 0.76%-6.91%,which of ICP-MS test is 0.50%-3.40%.The precision of the method is good.The method has the advantages of simple pretreatment process,simultaneous determination of multiple elements,wide linear range and high analysis efficiency,and can be used for the analysis of metal elements in fly ash samples of different types of waste incineration.
作者
巩海娟
谢芸欣
段英楠
GONG Haijuan;XIE Yunxin;DUAN Yingnan(Jilin Institute of Geological Sciences,Changchun 130021,China)
出处
《中国测试》
CAS
北大核心
2019年第9期54-59,共6页
China Measurement & Test
