电感耦合等离子体光谱法同时测定不同类型地质样品七种元素方法的研究  

Study on simultaneous determination of seven elements in different geological samples by inductively coupled plasma spectrometry

作　　者：许晓慧 谷周雷 张晓敏[1] 刘卫 张云[2] XU Xiao-hui;GU Zhou-lei;ZHANG Xiao-min;LIU Wei;ZHANG Yun(Tianjin North China Geological Explortion Bureau,Chengde 067000,China;Guilin University of Technology,Guilin 541004,China)

机构地区：[1]天津华北地质勘查局,河北承德067000 [2]桂林理工大学化学与生物工程学院,广西桂林541004

出　　处：《化学研究与应用》2022年第5期1218-1222,共5页Chemical Research and Application

基　　金：国家自然科学基金项目(21874032)资助;承德高锶背景区发展富锶农产品产业技术研究(21327504D)资助。

摘　　要：探索一种方便、快捷、准确的溶样方式,同时测定二氧化硅、三氧化二铝、三氧化二铁、氧化镁、氧化钙、锰、钒等7种主、次成分元素,提高准确度和工作效率。样品通过高温熔融,破坏晶格结构,使物质由晶相变为液相,再进行反酸化处理,使其转化为离子态,在电感耦合等离子体光谱仪上进行分析测试。本方法通过对助熔剂用量、熔样温度、熔样时间等参数进行条件优化试验,筛选出最佳条件,精密度为3.58%~6.04%,准确度为0.001~0.006,很好的满足了现行规范《多目标区域地球化学调查规范(1∶250000)》(DZ/T 0258—2014)的要求,并且适用于土壤、水系沉积物、灰石、多金属矿沉积物等各类型地质样品。本方法具有检出限低、精密度好、准确度高、适用种类多、测定范围广、消除干扰能力强、便于操作等特点,提高了分析效率、降低了测试成本,为实验室样品量大、样品种类复杂、测试指标较多等问题提供了解决办法。To explore a convenient,fast and accurate way to dissolve samples,and simultaneously determine 7 major and minor component elements such as silicon dioxide,aluminum oxide,iron(III)oxide,magnesium oxide,calcium oxide,manganese,and vanadium.Improve accuracy and work efficiency.The sample is melted at a high temperature to destroy the lattice structure and change the substance from the crystal phase to the liquid phase,and then undergo anti-acidification treatment to transform it into an ionic state,and perform analysis and testing on an inductively coupled plasma spectrometer.This method selects the best conditions by performing condition optimization tests on the amount of flux,sample melting temperature,sample melting time and other parameters.The precision is 3.58%to 6.04%,and the accuracy is 0.001 to 0.006,It satisfies the requirements of the current standard“Specifications for Geochemical Survey of Multi-target Areas(1:250000)”(DZ/T 0258-2014),and is suitable for various types of soil,water system sediments,limestone,polymetallic deposits,etc.Geological samples.This method has the characteristics of low detection limit,good precision,high accuracy,wide range of applications,wide measurement range,strong interference elimination ability,and easy operation.It improves analysis efficiency and reduces test costs.Solutions are provided for problems such as large sample volume,complex sample types,and many test indicators.

关 键 词：电感耦合等离子体光谱法 内标法 地质测试 多元素 

分 类 号：O657.3[理学—分析化学]