摘要
提出了高温燃烧水解-淋洗液在线发生离子色谱法来测定铬矿石中氟和氯。并通过实验确定了较优的工艺条件:称样量、水解时间、水解温度、氧气流量及离子色谱仪条件,标准曲线线性相关系数大于0.999。实验结果表明氟和氯的3个添加浓度(20、50、100μg/kg)的平均回收率范围为96%~105%,相对标准偏差小于4.30%,检测限可达到20μg/kg。
In this research,on-line ion chromatography with high temperature combustion hydrolysis electric eluent,which determines the fluorine and chlorine in chromium ores,was proposed.The optimum technological conditions tested by experiments are:he linear correlation coefficient of the standard curve among sample weight,hydrolysis time and temperature,oxygen flow rate,ion chromatography conditions is bigger than 0.999.The experimental results show that the average recovery ranges from 96%to 105%for the three added concentrations of fluorine and chlorine(20,50,100μg/kg).And the relative standard deviation is less than 4.30%.The detection limit can reach 20μg/kg.
作者
洪武兴
田琼
叶金燕
卢韵宇
杨树洁
胡建军
杨旭明
周庆
HONG Wuxing;TIAN Qiong;YE Jinyan;LU Yunyu;YANG Shujie;HU Jianjun;YANG Xuming;ZHOU Qing(China Certification&Inspection Group Guangdong Co.,Ltd.,Zhanjiang Branch,Zhanjiang 524022,Guangdong,China;Zhanjiang Customs Technology Center,Zhanjiang 524022,Guangdong,China)
出处
《有色金属科学与工程》
CAS
2020年第4期64-68,共5页
Nonferrous Metals Science and Engineering
基金
2019年湛江市科技发展专项(2019A01031)。
关键词
铬矿石
离子色谱法
氟
氯
高温燃烧水解
chromatography ore
ion chromatography
fluoride
chlorine
high temperature burning hydrolysis
