[Determination of free formaldehyde in cosmetics by pre-column derivatization, extraction inhibition and high performance liquid chromatography].

@article{L2012DeterminationOF,
  title={[Determination of free formaldehyde in cosmetics by pre-column derivatization, extraction inhibition and high performance liquid chromatography].},
  author={Chunhua L{\"u} and Chaoqun Huang and Mei Chen and Wen Xie and Xiaomei Chen},
  journal={Se pu = Chinese journal of chromatography},
  year={2012},
  volume={30 12},
  pages={1287-91}
}
Pre-column derivatization and inhibition by solvent extraction were applied to determine free formaldehyde in cosmetics by high performance liquid chromatography (HPLC). Due to the rapid decomposition of formaldehyde donors in the derivatization, it is hard to detect the amount of the free formaldehyde in cosmetics. The formaldehyde directly reacted with 2,4-dinitrophenylhydrazine in acetonitrile-phosphate buffer (pH 2) (1:1, v/v) solution for 2 min, then dichloromethane extraction was used to… CONTINUE READING
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