摘要
采用微波消解-电感耦合等离子体原子发射光谱法（ICP—AES）对废电路板中18种主要金属元素进行定量分析。根据样品中被测元素的溶解特点，分别采用硝酸-氢氟酸-高氯酸-硼酸和王水-氢氟酸-高氯酸-硼酸两种混酸消解体系，在逐级升压的模式下进行样品的微波消解。通过基体匹配、元素分组进样、谱线优选的方法基本消除了测定过程中各元素之间可能存在的干扰。通过加标回收和与化学法、原子吸收法的对比分析，验证了方法的可靠性和准确性。实验表明，除基体铜外其他17种元素均能用本法测定。本方法检出限为1．1～24ug／L，用于废电路板样品的17种元素测定，RSD〈4．0％（竹-6），加标回收率为91％～111％。
Eighteen main metallic elements were quantitatively analyzed by microwave digestion-inductively coupled plasma atomic emission spectrometry （ICP-AES）. According to different dissolving features of measured elements in the sample,nitric acid-hydrofluoric acid-perchloric acid-boric acid mixed acid digested system and aqua regia-hydrofluoric acid-perchloric acid-boric acid mixed acid digested system were separately adopted,and microwave digestion of samples was done under the step-by-step lifting pressure mode. Mutual interference among elements that potentially existed in the determination process was nearly removed with methods such as matrix matching, elements group sampling and spectral line selection. The reliability and accuracy of the method were confirmed by recovery rate experiment and comparison analysis with chemical method and atomic absorption spectrometry. The experiment indicated that all other seventeen elements but copper matrix could be analyzed with this method. The method has been used to detect seventeen elements in waste circuit board samples, giving detection limit of 1.1--24ug/L, RSD of 〈4.0% （n=6）, and recovery rate of 91%--111%.
出处
《冶金分析》
EI
CAS
CSCD
北大核心
2008年第8期48-51,共4页
Metallurgical Analysis
基金
上海市科学技术委员会科研计划项目(042312006)
关键词
电子废弃物
废电路板
电感耦合等离子体原子发射光谱法
微波消解
金属元素
electronic waste
waste circuit board
inductively coupled plasma atomic emission spectrometry
microwave digestion
metallic element
