自动快速燃烧-离子色谱法测定铜精矿中的氟  

Determination of Fluoride in Copper Concentrate by Ion Chromatography with Automatic Quick Furnace

作　　者：王虹 魏秉炎 李异 严莎 WANG Hong;WEI Bingyan;LI Yi;YAN Sha(Metallogenic Material Testing Center,Tianjin Customs,Tianjin 300456,China)

机构地区：[1]天津海关化矿金属材料检测中心,天津300456

出　　处：《中国无机分析化学》2021年第6期69-72,共4页Chinese Journal of Inorganic Analytical Chemistry

基　　金：海关总署科研项目(2020HK259)。

摘　　要：快速准确地测定铜精矿中的氟对于保护设备及环境是十分必要的,因此,建立了自动快速燃烧(AQF)-离子色谱法联用快速测定铜精矿中氟的方法。将AQF的自动化特性和离子色谱的灵敏度高、准确性好的特点结合起来,能够实现操作过程的连续自动化。结果表明,线性范围内(1.0~50.0μg)校准曲线相关系数R>0.999,氟的检出限为0.0004%。按照实验方法测定铜精矿样品中氟,结果的相对标准偏差(RSD,n=6)为2.1%~4.2%。将实验方法用于铜精矿标准样品氟含量测定,测定值与认定值吻合较好;方法对照实验表明,实验方法对氟含量的测定值与国家标准方法GB/T 3884.12—2010的测定值基本一致。Rapid and accurate determination of fluorine in copper concentrate is very necessary for the protection of equipment and environment.A new method for the determination of fluoride in copper concentrate by automatic quick furnace(AQF)combined with IC was established.Combining the automatic characteristics of AQF with the high sensitivity and accuracy of ion chromatography,the continuous automation of the operation process can be realized.The linearity of calibration curve was good when the mass concentration of fluoride was in range of 1.0-50.0μg.The linear correlation coefficient was R>0.999,and the detection limit of method was 0.0004%.According to the experimental method,the relative standard deviations(RSD,n=6)were between 2.1%—4.2%.The experimental method was applied to the determination of fluorine content in copper concentrate standard sample,and the determined value was in good agreement with the determined value.The experimental results showed that the measured values of fluoride by the experimental method were basically consistent with those of the national standard GB/T 3884.12—2010.

关 键 词：自动快速燃烧 离子色谱 铜精矿 氟 

分 类 号：O657.75[理学—分析化学] TH833[理学—化学]