参考文献:10.1007/s00216-014-8398-z 摘要:Capriotti AL, Cavaliere C, Foglia P, Samperi R, Stampachiacchiere S, Ventura S, Laganà A. Ultra-high-performance liquid chromatography-tandem mass spectrometry for the analysis of free and conjugated natural estrogens in cow milk without deconjugation. Analytical and Bioanalytical Chemistry. 2014 Dec 28;407(6):1705–19. doi: 10.1007/s00216-014-8398-z.