ICP–AES法测定岩矿样品中的17种金属元素  

Determination of 17 Metal Elements in Rock Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry

作　　者：龚炜[1] 

机构地区：[1]中石化河南油田分公司勘探开发研究院,河南南阳473132

出　　处：《化学分析计量》2015年第4期48-51,共4页Chemical Analysis And Meterage

摘　　要：建立电感耦合等离子体发射光谱法测定岩石矿物中17种金属元素的分析方法。采用王水-氢氟酸-高氯酸对样品进行前处理，17种元素的分析谱线为213．857-766．49nm，射频功率为750～1300W，雾化气流量为0．7-1．2L／min。各元素的质量浓度在0-4μg／mL范围内与谱线强度呈良好的线性关系，r≥0．999，方法检出限为0．006-0．42μg／g。用该方法对国家一级标准物质进行测定，测定结果的相对误差在±16％之内，相对标准偏差为0．08％-4．15％（n=6）。该方法操作简单、准确度高，适用于岩石和矿物中金属元素的测定。The determination of 17 elements in rock and mineral samples by inductively coupled plasma-atomic emission spectrometry （ICP-AES） was developed. The sample was dissolved in aqua regia, HF and HC104 mixed acids. The analytical spectral lines of 17 elements were 213.857-766.49 nm, RF power was 750-1 300 W, and atomizing gas flow was 0.7-1.2 L/rain. The mass concentration of detection element was linear with emission intensity in the range of 0--4μg/mL, r 〉 0.999. The detection limits were 0.0064）.42 μg/g. The method was applied to the determination of these elements in the reference material, the relative error was within ＋ 16%, and the relative standard deviations of detection results were 0.08%-4.15% （n=6）. The method is simple and accurate, it can be applied to the determination of metal elements in rock and minerals.

关 键 词：电感耦合等离子体发射光谱法 金属元素 岩矿分析 

分 类 号：O657.3[理学—分析化学]