Details

Autor(en) / Beteiligte

• Franco, Jefferson Honorio
• Silva, Bianca F
• Zanoni, Maria V. B

Titel

Using ionic liquid combined with HPLC-DAD to analyze semi-permanent hair dyes in commercial formulations

Ist Teil von

• Analytical methods, 2015-01, Vol.7 (3), p.1115-1122

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Strict legislations in different countries have regulated the use of hair colorants and established the limits of dye concentration in cosmetics containing dyestuff. The present work describes a chromatographic HPLC-DAD method to determine the semi-permanent dyes basic blue 99 (BB99), acid violet 43 (AV43), basic brown 16 (BB16), basic red 76 (BR76) and basic yellow 57 (BY57) in hair coloring formulations. 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, BMIm[NTf 2 ], an ionic liquid (IL) at room temperature, helped to improve the separation and quantification of low levels of basic and acidic dyes by HPLC coupled to a diode array detector. The developed method successfully identified the dyes in a commercial semi-permanent hair dyeing formulation and in drinking water. Comparison with an LC-MS/MS technique aided the validation of the results. IL addition can be used to improve the HPLC-DAD detection of hair dyes. Hair dyes are detected in beauty salon wastewater and commercial formulations. IL promotes a better separation of acidic and basic dyes and higher symmetry of chromatographic peaks.