离子色谱法测定高氯、高钠油田回注水中的阴、阳离子及有机酸  

Determination of Anions, Cations and Organic Acids in the Oil Field Water by Ion Chromatography

作　　者：史亚利[1] 刘京生[1] 蔡亚岐[1] 牟世芬[1] 温美娟[2] 

机构地区：[1]中国科学院生态环境研究中心,北京100085 [2]北京科技大学,北京100083

出　　处：《色谱》2004年第6期646-649,共4页Chinese Journal of Chromatography

基　　金：国家重点基础研究计划("973"项目)资助课题(2003CB415001).

摘　　要：建立了高氯、高钠油田回注水中痕量无机阴、阳离子和有机酸的离子色谱分析方法。对高钠基质中痕量阳离子的测定,选用IonPacCS12A分析柱、H2SO4溶液梯度淋洗、电导检测器检测;对高氯基质中阴离子及有机酸的测定,选用对OH-具有高选择性的高容量的IonPacAS11 HC柱、KOH梯度淋洗、电导检测器检测。在优化的梯度淋洗条件下,高氯或高钠的存在不影响痕量阴离子或阳离子的测定。该方法具有良好的线性(r=0 9926～0 9990)和精密度(测定组分峰面积的相对标准偏差(n=7)在8 0%以下),回收率为90%～110%,最小检测限为1 55～31 8μg/L。该方法操作简单、方便,结果准确、可靠。A method for the determination of anions, cations and organic acids in the oil field water with high chloride and sodium ions was developed by ion chromatography (IC) with a conductivity detector. The separation of the cations was achieved on an IonPac CS12A column with H_2SO_4 as the eluent. The separation of the anions and organic acids was achieved on an IonPac AS11-HC column with KOH as the eluent, and the detection was performed by a conductivity detection mode. The calibration graphs of peak area for all the analytes were linear (over) a wide range. The recoveries of the added standards were 90%-110%. The relative stan-(dard) derivations (RSDs) of the peak area of analytes were less than 8.0%. The detection limits for analytes ranged from 1.55 (μg/L) to 31.8 (μg/L).

关 键 词：离子色谱 阴离子 阳离子 有机酸 油田水 

分 类 号：O658[理学—分析化学]