离子色谱法测定选矿废水中4种阴离子  

Determination of 4 Anions in Waste Water from Ore Dressing by Ion Chromatography

作　　者：张明星[1] 李华昌[2] 于力[2] 汤淑芳[2] 

机构地区：[1]桂林理工大学化学与生物工程学院,桂林541004 [2]北京矿冶研究总院测试研究所,北京100044

出　　处：《理化检验（化学分册）》2011年第1期44-46,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：北京矿冶研究总院科研基金(YZ-2008-16)

摘　　要：采用离子色谱法测定选矿废水中微量F^-、Cl^-、NO3^-、SO4^2-的含量。以SH-AC-1型阴离子分离柱为离子交换柱,以2.5 mmol·L^-1碳酸钠-3.5 mmol·L^-1碳酸氢钠溶液为淋洗液,采用抑制电导器检测。F^-、Cl^-、NO3^-、SO4^2-4种阴离子分别在0.01-4.0,0.01-15.0,0.01-15.0,0.01-30.0 mg·L^-1范围内呈线性关系,检出限（3S/N）分别为6.13,3.89,5.86,8.49μg·L^-1。方法用于选矿废水试样中4种阴离子的测定,加标回收率分别为97.5%,104.0%,102.0%,98.3%,相对标准偏差均小于4.0%。Contents of F^-,Cl^-,NO3^- and SO4^2- in waste water from ore dressing were determined by ion chromatography.The SH-AC-1 anion-exchange column was used for separation,and a mixture of solution of 2.5 mmol·L^-1 Na2CO3 and 3.5 mmol·L^-1 NaHCO3 was used as eluant.Inhibitory conductivity detection was adopted in the determination.Linearity ranges for F^-,Cl^-,NO3^- and SO4^2- were found in ranges of 0.01-4.0,0.01-15.0,0.01-15.0 and 0.01-30.0 mg·L-1,with detection limit（3S/N） of 6.13,3.89,5.86,8.49 μg·L-1 respectively.The proposed method was applied to the determination of the anions in waste water samples,values of average recovery found by standard addition method were 97.5%（F^-）,104.0%（Cl^-）,102.0%（NO3^-） and 98.3%（SO4^-）,and RSD′s（n=11） found were all less than 4.0%.

关 键 词：离子色谱法 选矿废水 氟离子 氯离子 硝酸根 硫酸根 

分 类 号：O657.7[理学—分析化学]