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China Surfactant Detergent & Cosmetics ›› 2025, Vol. 55 ›› Issue (2): 253-261.doi: 10.3969/j.issn.2097-2806.2025.02.015

• Analytical methods and testing • Previous Articles     Next Articles

A method for analysis of stable isotope labeling of 6 kinds of strongly reducing dyes in hair dyes by HPLC-MS/MS

Ruoqi Li1,Ying Sun1,*(),Li Li1,Xuebing Wei1,Zhaohui Guo1,Renqi Wang2   

  1. 1. Gansu Institute for Drug Control, Lanzhou, Gansu 730070, China
    2. Shaanxi University of Science & Technology, Xi’an, Shaanxi 710016, China
  • Received:2024-03-09 Revised:2025-02-05 Online:2025-02-22 Published:2025-02-28
  • Contact: Ying Sun E-mail:sunying03@hotmail.com

Abstract:

A method was developed for analysis of stable isotope labeling of 6 dyes by HPLC-MS/MS. Using dansulfonyl chloride and dansulfonyl chloro-D6 as derivatization reagents, the derivatization reaction process was reasonably designed and the derivatization reaction conditions were optimized. A multiple response monitoring (MRM) method was established for the qualitative and quantitative analysis of dyes by using the derivations of dansulfonyl chloro-D6 as internal standard. Optimal derivatization reaction conditions: reaction time of 50 min, reaction temperature of 30 ℃, and addition of 20 μL of triethylamine in the derivatization solvent. Mass spectrometry analysis adopts multiple response monitoring (MRM) under ESI+mode of electrospray ion source. The concentrations of the six dye derivatives range from 0.45 to 4.3 μg/mL, with average recoveries ranging from 83.7% to 114.3% and relative standard deviations (RSD) ranging from 2.3% to 8.9%. The method not only improves the stability of dyes, but also eliminates the strong matrix effect for accurate quantitative analysis of dyes. The chemical properties of dye-derived products are stable within 10 days under the condition of 4 ℃. The establishment of this method provides a new idea for the qualitative and quantitative analysis of prohibited dyes.

Key words: dyes, stable isotope labeling, HPLC-MS/MS

CLC Number: 

  • TQ658