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日用化学工业(中英文) ›› 2025, Vol. 55 ›› Issue (7): 943-948.doi: 10.3969/j.issn.2097-2806.2025.07.016

• 分析与检测 • 上一篇    

高效液相色谱法同时测定口腔护理牙膏中10种季铵盐类杀菌剂含量

范丽敏1,何美玲1,*,原丽莹1,申亚利1,谢冰冰1,刘培林2   

  1. 1.濮阳医学高等专科学校,河南 濮阳 457000
    2.濮阳市人民医院,河南 濮阳 457000
  • 收稿日期:2024-09-11 修回日期:2025-06-30 出版日期:2025-07-22 发布日期:2025-07-23
  • 基金资助:
    河南省高校人文社会科学研究一般项目(2025-ZZJH-128)

Simultaneous determination of 10 quaternary ammonium salt bactericides in oral care toothpaste by high performance liquid chromatography

Limin Fan1,Meiling He1,*,Liying Yuan1,Yali Shen1,Bingbing Xie1,Peilin Liu2   

  1. 1. Puyang Medical College, Puyang, Henan 457000, China
    2. Puyang People’s Hospital, Puyang, Henan 457000, China
  • Received:2024-09-11 Revised:2025-06-30 Online:2025-07-22 Published:2025-07-23
  • Contact: E-mail:hemeiling06@163.com

摘要: 建立了高效液相色谱法(HPLC)同时检测口腔护理牙膏中10种季铵盐类化合物(苯扎氯铵、苄索氯铵、地喹氯铵、劳拉氯铵、米他氯铵、十八烷基二甲基苄基氯化铵、十六烷基三甲基氯化铵、西吡氯铵、西曲溴铵、西他氯铵)的方法。使用乙腈作为提取溶剂,以60 mmol/L乙酸铵缓冲溶液(pH=6.0)和乙腈作为流动相梯度洗脱,柱温30 ℃,流速1.0 mL/min;检测波长为210 nm。方法学评价结果显示,10种季铵盐类化合物的精密度RSD均小于6%;在0.1~500 mg/L质量浓度范围内10种季铵盐类化合物呈良好的线性关系,相关系数为0.999 4 ~ 0.999 8,检测限为0.03~0.09 mg/L;10种季铵盐类化合物的平均回收率范围为96.80%~105.25%,RSD范围为0.74%~5.45%。使用该方法在3种牙膏中分别检出了苯扎氯铵(128.09 mg/kg)、地喹氯铵(329.13 mg/kg)和西吡氯铵(231.04 mg/kg)。该方法分离效果好、精密度高,可用于口腔护理牙膏中季铵盐类化合物的检测。

关键词: 高效液相色谱法, 口腔护理牙膏, 同时测定, 季铵盐类化合物, 杀菌剂

Abstract:

A high performance liquid chromatography (HPLC) method was established for the simultaneous determination of 10 quaternary ammonium salt compounds (benzalkonium chloride, benzethonium chloride, dequalinium chloride, lauralkonium chloride, methamphetamine chloride, octadecyl dimethyl benzyl ammonium chloride, cetyltrimethylammonium chloride, cetylpyridinium chloride, cetrimide bromide, and cetrimide chloride) in oral care toothpaste. Acetonitrile was used as the extraction solvent, with a mobile phase of 60 mmol/L ammonium acetate buffer solution (pH=6.0) and acetonitrile for gradient elution. The column temperature was 30 ℃, the flow rate was 1.0 mL/min, and the detection wavelength was 210 nm. The results of the methodological evaluation show that the precision RSD of 10 quaternary ammonium salts is less than 6%. The 10 quaternary ammonium salts show good linear relationship in the mass concentration range of 0.1-500 mg/L, with correlation coefficients of 0.999 4-0.999 8 and detection limits of 0.03-0.09 mg/L. The average recovery of 10 quaternary ammonium salts ranges from 96.80% to 105.25%, and the RSD ranges from 0.74% to 5.45%. Using this method, benzalkonium chloride (128.09 mg/kg), dequalinium chloride (329.13 mg/kg) and cetylpyridinium chloride (231.04 mg/kg) are detected in three toothpastes, respectively. This method has good separation effect and high precision, and can be used for the detection of quaternary ammonium salts in oral care toothpastes.

Key words: high performance liquid chromatography, oral care toothpaste, simultaneous determination, quaternary ammonium salts, bactericide

中图分类号: 

  • TQ658