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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 (6): 804-810.doi: 10.3969/j.issn.2097-2806.2026.06.013

• 分析与检测 • 上一篇    下一篇

基于近红外光谱技术的牙膏中十二烷基硫酸钠快速定量分析

周雷1,*(),曹东霞2,何晶晶1,陈锦玲2,李钢1,苏哪锋1   

  1. 1 广东省中山市质量计量监督检测所， 广东 中山 528400
    2 好来化工（中山）有限公司， 广东 中山 528400
  • 收稿日期:2025-08-15 修回日期:2026-06-16 出版日期:2026-06-22 发布日期:2026-07-22
  • 基金资助:
    国家市场监督管理总局科技计划项目(2023MK097);中山市社会公益科技研究项目(2023B2046)

Rapid quantitative analysis of sodium dodecyl sulfate in toothpaste based on near-infrared spectroscopy

Lei Zhou1,*(),Dongxia Cao2,Jingjing He1,Jinling Chen2,Gang Li1,Nafeng Su1   

  1. 1 Guangdong Zhongshan Supervision Testing Institute of Quality & Metrology, Zhongshan, Guangdong 528400, China
    2 Hawley & Hazel Chemical Company （Zhongshan） Limited, Zhongshan, Guangdong 528400, China
  • Received:2025-08-15 Revised:2026-06-16 Online:2026-06-22 Published:2026-07-22
  • Contact: *E-mail: 416269894@qq.com

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摘要：

采用近红外光谱技术，结合偏最小二乘回归算法，二阶导数加标准正态变量校正为预处理方法，建立了牙膏中表面活性剂十二烷基硫酸钠的快速定量分析模型。针对牙膏透明度的差异，引入反射器辅助光谱采集，分别构建不透明与半透明牙膏的定量模型。两组模型的决定系数（R2）分别为0.989 2，0.995 4，交互验证均方根误差（RMSECV）分别为0.033 8，0.031 9，相对标准偏差（RSD，n=6）均小于2%。该方法操作简便、快速、准确、无损、绿色环保，适用于牙膏中表面活性剂十二烷基硫酸钠的快速质量监控。

关键词: 近红外光谱, 牙膏, 十二烷基硫酸钠, 定量分析

Abstract:

A rapid quantitative analysis model for sodium dodecyl sulfate in toothpaste was established by combining near-infrared spectroscopy with a partial least squares regression algorithm, using a second derivative combined with standard normal variate transformation as the preprocessing method. To address the difference in transparency, a reflector was introduced to assist in spectral collection, and independent quantitative models for opaque and translucent toothpaste were constructed respectively. The coefficients of determination （R2） for the two models are 0.989 2 and 0.995 4, respectively, with the root mean square errors of cross-validation （RMSECV） of 0.033 8 and 0.031 9, respectively. The relative standard deviations （RSDs, n=6） are both less than 2%. This method is simple, rapid, accurate, non-destructive, and environmentally friendly, making it suitable for rapid quality monitoring of sodium lauryl sulfate in toothpaste.

Key words: near-infrared spectroscopy, toothpaste, sodium dodecyl sulfate, quantitative analysis

中图分类号: 

  • TQ658