离子色谱法测定双子表面活性剂中残留的-氯乙酸钠-学兔兔 www.xuetutu.com.pdf

石油化工
8
PETROCHIEMIICAL TTECHNOLOGY
2014年第43卷第7期
离子色谱法测定双子表面活性剂中
残留的一氯乙酸钠
杨一青2,沈之芹2,李应成
鸡2,张卫东2
(1.中国石化一采用表面活性剂重点实验室,上海201208;2.中国石化海石油化工研究院,上海201208)
摘要?建立了一种测定胺酸型双子表面活性剂中残一氯乙酸钠含量的离子色普法。试样经前处理柱 Dionex Ongpard RP
预处理后可去除其中的琉水性千扰物。针尉双子表面活性剂中存在较多其他阴离子,优化了色谱条件,即采用起始浓度为8.0
miaoli的KOH溶液为淋洗液进行梯度洗脱, Ionpac AS19阴离子分析(4mx250mm)和AG19保护柱(4mx50mm),杜
温30℃,电导池检测器检测。在优化的色谱件下,一氯乙酸钠的线性回归方程为P=11013A+0.0867(p为双子表面活性剂
中一氯乙酸钠的质量浓度;4为峰面积),线性范?为0.1~10.0mgL,相关系数为o
相对标准偏差为!.24%,回收率在
99.0%-102.9%之闯,定量检出下限为9.060mgiL。该方法操作方便,简单快速,精密度高,重复性好,适用于双予表陌活
性剂中残留一氯乙酸钠含量的检测
[关词、离子色谱法;双子表面活性剂;一氯乙酸钠
文章编号」1000-8144(2014)07-0838-05
[中图分类号]TQ420.4
文献标志码!
Determination of Content of Sodium Monochloroacetate Residue in
Gemini Surfactants by lon Chromatography
Yang Miging, hen Zhigin, Li Yingcheng, Sha Ou", Zhang Weidong
L SINOPEC Key Laboratory of Surfactants for Enhanced Oil Recovery, Shanghai 201208, China
2. SINOPEC Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China)
I Abstract J An ion chromatography for measuring the content of sodium monochloroacetate(SMCA)
residue in carboxylic Gemini surfactants was developed. Samples were pretreated in a cartridge(Dionex
Onguard I RP)to remove hydrophobic disturbers. To eliminate the interference of many other
anions in the Gemini surfactants, the chromatographic conditions were optimized. The separation of
sodium monochloroacetate was performed on an Ionpac AS19(4 mm x 250 mm)ion exchange column
and an AG19(4 mm x 50 mm)guard column using conductivity detector and gradient elution with
initial concentration 8.0 mmol/ KOH solution at column temperature 30 C. Under the optimized
conditions, the regression equation was expressed as p=11.0134+0.086 7(p: mass concentration o
SMCA: A: peak area)with the correlation coefficient of 0.9994 and the standard deviation of 1. 24%
in the linear range of 0.1-10.0 m/L. The quantitative detection limit was 0.060 m/L and the recovery
was in the range of 99.0%-102.9%. The method is simple, rapid, sensitive and accurate
Keywords J ion chromatography; Gemini surfactants; sodium monochloroacetate
双子表面活性剂又称 Gemini表面活性剂,是的 Krafft点和很好的水溶性,其水溶液具有特殊的
通过一个联接基将两个传统表面活性剂分子在其
亲水头基或接近亲水头基处连接在一起而形成的
收稿日期]2014-01-23;[修改稿日期」2014-03-31
作者简介]杨一青(1963
女,浙江省绍兴市人,硬上,高
一类新型表面活性剂。与传统表面活性剂相
级工程师,电话21-68462197-6602,电邮 yangya sshy(@ sinopec
比,双子表面活性剂具有极高的表面活性、更低com