摘要
用免试剂离子色谱法对冶炼渣中阴、阳离子(F-,Cl-,NO2-,Br-,NO3-,SO42-,PO43-,Li+,Na+,NH4+,K+,Mg2+和Ca2+)进行了测定。阴离子分离条件:阴离子交换柱Ion Pac AS19,氢氧化钾溶液梯度淋洗,抑制电导检测,流速为1mL/min;阳离子分离条件:阳离子交换柱Ion Pac CS16,甲基磺酸溶液梯度淋洗,抑制电导检测,流速为1.3mL/min。同一天内的待测离子峰保留时间、峰高和峰面积的相对标准偏差分别小于0.35%,1.8%和1.1%,连续5天的待测离子峰保留时间、峰高和峰面积的相对标准偏差分别小于0.78%,2.4%和1.6%。被测离子的浓度与峰面积具有良好的线性,相关系数r=0.999 0~0.999 9,检出限低于20μg/L。对入境氧化铁皮渣、钒渣、富锰渣浸出液中阴、阳离子进行测定,加标回收率在86%~110%之间。
Abstract: The anion and cation (F^-,C1^-,NO2^-,Br^-,NO3^-,SO4^2-,PO4^3-,Li^+,Na^+,NH4^+,K^+,Mg^2+andCa^2+) in leaching solution of smelting slag were determined by reagent free ion chro- matography. The separation conditions of anion: cation exchange column Ion Pac AS19, gradient elution with potassium hydroxide solution, suppressed conductance detection, flow rate of 1 mL/min; separation conditions of cation, anion exchange column Ion Pac CS16, gradient elution with methanesulfonic acid solution, suppressed conductance detection, flow rate of 1. 3 mL/min. The relative standard deviations (RSDs) of retention time, peak height and peak area of testing ions within one day were less than 0.35 %, 1.8 % and 1.1%, respectively. The RSDs of retention time, peak height and peak area of testing ions in continuous five days were less than 0.78 %, 2.4 % and 1.6 %, respectively. The concentration of determined ions with its peak area had good linearity (r=0. 999 0-0. 999 9). The detection limit was lower than 20 μg/L. The anion and cation in leaching solution of imported scale slag, vanadium slag and manganese-rich slag were determined with recoveries of standard addi- tion in the range 86 %-110 %.
出处
《冶金分析》
CAS
CSCD
北大核心
2012年第2期32-37,共6页
Metallurgical Analysis
基金
科技支承广西北部湾经济区发展专项(桂科转09320026)
广西自然科学项目(桂科自0991295)
关键词
离子色谱
免试剂
冶炼渣
阴离子
阳离子
Determination of anion and cation in leaching solution ofimported smelting slag by rea2ent free ion chromato2raDhv