汞元素高灵敏、低成本检测新方法的研究  

A NEW METHOD FOR DETECTING MERCURY ELEMENT WITH HIGH SENSITIVITY AND LOW COST

作　　者：刘学国[1] 刘果 范香 李露露 马晴 郭金鹭 杜朝军[1] LIU Xue-guo;LIU Guo;FAN Xiang;LI Lu-lu;MA Qing;GUO Jin-lu;DU Chao-jun(Department of Biology and Chemical,Nanyang Institute of Technology,Nanyang 473004,China)

机构地区：[1]南阳理工学院生物与化学工程学院,河南南阳473004

出　　处：《南阳理工学院学报》2018年第4期98-104,共7页Journal of Nanyang Institute of Technology

摘　　要：本研究应用4200型微波等离子体原子发射光谱仪(MP-AES)分别采用单通道进样模式和多通道—氢化物发生法进样模式测定有害重金属元素汞,系统地研究了介质的种类、介质的酸度以及硼氢化钾的用量对汞元素测定的影响。分析结果表明各条件下的线性相关系数均≥0. 999,多模式进样氢化物发生法的方法检出限范围为0. 00581～0. 0508 mg/L,优于单通道直接进样模式的方法检出限0. 494～1. 444 mg/L,各条件下的线性范围宽度均可达到二个数量级以上,空白加标回收率在93%～120%之间。本方法准确快速、成本低、安全性高、具有较好的检出限和较宽的线性范围,是测定Hg、As等众多元素的一种新选择。This study used 4200 microwave plasma atomic emission spectrometer(MP-AES)respectively adopts the model of single channel sampling and multi-channel hydride generationsampling to determine the harmful heavy metal element-mercury,systematically studied the kinds of medium,medium acidity and the amount of potassium borohydride on measurement of mercury.The results show that the linear correlationcoefficient of each condition was more than 0.999,the method detection limit of multi-channel hydride sampling was 0.00581 mg/L-0.0508 mg/Lwhichis better than the single channel sampling(0.494 mg/L-1.444mg/L),the linear range of width under different conditions can be achieved more than two orders of magnitude,blank recoveries in the 93%-120%.This method which is accurate,rapid,low cost,high safety,good detection limit and wide linear range is a new choice for the determination of Hg,As and many other elements.

关 键 词：4200微波等离子体原子发射光谱仪 酸度 氢化物发生法 汞 

分 类 号：O653[理学—分析化学]