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日用化学工业（中英文）

日用化学工业（中英文） ›› 2026, Vol. 56 ›› Issue (10): 1426-1432.doi: 10.3969/j.issn.2097-2806.2026.10.016

• 分析与检测 • 上一篇    

离子色谱法测定醇醚羧酸中一氯乙酸根离子和氯离子

王健伟1,2,田鑫1,2,王天壮1,2,李国晋1,2,张军1,2,*()   

  1. 1 中国日用化学工业研究院， 山西 太原 030001
    2 功能性表面活性剂山西省重点实验室， 山西 太原 030001
  • 收稿日期:2025-12-10 修回日期:2026-09-18 出版日期:2026-10-22 发布日期:2026-10-30
  • 基金资助:
    自然堂研究基金资助项目(自然堂2023);溢多利研究基金资助项目(溢多利2023)

Determination of monochloroacetate ion and chloride ion in alcohol ether carboxylic acids by ion chromatography

Jianwei Wang1,2,Xin Tian1,2,Tianzhuang Wang1,2,Guojin Li1,2,Jun Zhang1,2,*()   

  1. 1 China Research Institute of Daily Chemical Industry, Taiyuan, Shanxi 030001, China
    2 Shanxi Key Laboratory of Functional Surfactants, Taiyuan, Shanxi 030001, China
  • Received:2025-12-10 Revised:2026-09-18 Online:2026-10-22 Published:2026-10-30
  • Contact: E-mail: zfj0915@163.com

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摘要：

醇醚羧酸（AEC）产品近年来迭代升级进程显著加快，新型产品不断涌现，现有分析手段已难以适配全品类AEC样品的检测需求。为此，本研究建立了离子色谱法测定AEC中一氯乙酸根离子与氯离子的分析方法。实验采用青岛盛瀚SH-AP-1阴离子分析柱（4.0 mm×250 mm，5.5 μm）实现目标离子分离，以氢氧化钾溶液为淋洗液进行等度洗脱，结合抑制型电导检测器检测，采用外标法完成定量分析。通过对离子色谱检测条件的系统优化，确定最优检测条件为：淋洗液为5 mmol/L氢氧化钾溶液，流速0.8 mL/min；该条件下目标离子可实现高效基线分离。方法学验证结果表明：两种目标阴离子在1~50 μg/mL质量浓度范围内线性关系良好，相关系数（r）均大于0.999；3个浓度水平的加标回收率为93.0%~98.4%，相对标准偏差（RSD）为0.4%~3.4%，各项性能指标均符合实际样品分析的技术要求。该方法操作简便、分离效果优异，且精密度、准确度与重复性表现良好，可有效用于不同类型AEC产品中一氯乙酸根离子与氯离子的准确定量检测，并能实现低氯、低一氯乙酸类AEC以及氧化法产品的精准筛选，为AEC产品质量控制提供可靠的技术支撑。

关键词: 离子色谱法, 醇醚羧酸, 一氯乙酸根离子, 氯离子, 电导检测器

Abstract:

The iterative upgrading process of alcohol ether carboxylic acid （AEC） products has significantly accelerated in recent years, with new products continuously emerging. Existing analytical methods are increasingly inadequate to meet the testing demands for all categories of AEC products. Therefore, in this study, a method of ion chromatography was established for determining the monochloroacetate ion and chloride ion in AEC. In the experiment, a Qingdao Shenghan SH-AP-1 anion-exchange column （5.5 μm, 4.0 mm×250 mm） was employed for target ion separation. Isocratic elution was operated by using potassium hydroxide solution as the mobile phase. Coupled with a suppressed conductivity detector, quantitative analysis was performed by external standard method. The optimized conditions of ion chromatography were determined as follows: The 5 mmol/L KOH solution was used as mobile phase at a flow rate of 0.8 mL/min. Under this condition, the target ions achieved efficient baseline separation. Methodology validation demonstrated that both target anions exhibited good linearity in the concentration range of 1-50 μg/mL, with correlation coefficients （r） exceeding 0.999. The spiked recoveries at three concentration levels ranged from 93.0% to 98.4%, with relative standard deviations （RSD） between 0.4% and 3.4%. All performance metrics met the technical requirements for real-sample analysis. This method was simple to operate and had excellent separation effect, indicative of good precision, accuracy, and repeatability. It was effective for precise quantitative detection of monochloroacetate ion and chloride ion in various types of AEC products. Furthermore, it enabled accurate screening of AEC products with low chloride type and low monochloroacetic acid type, as well as oxidation-processed products, providing reliable technical support for quality control of AEC products.

Key words: ion chromatography, alcohol ether carboxylic acid, monochloroacetate ion, chloride ion, conductivity detector

中图分类号: 

  • TQ423