主题：【悬赏帖】求助英文文献4篇！

【序号】：1
【作者】: Dueker SR , Jones AD , Smith GM , Clifford AJ .
【题名】：Stable isotope methods for the study of beta-carotene-d8 metabolism in humans utilizing tandem mass spectrometry and high-performance liquid chromatography.
【期刊】：Anal Chem
【年、卷、期、起止页码】：1994 Dec;66 (23): 4177-85.
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【序号】：2

【作者】: Wang Y , Xu X , van Lieshout M , West CE , Lugtenburg J , Verhoeven MA , Creemers AF , Muhilal , van Breemen RB .
【题名】：A liquid chromatography-mass spectrometry method for the quantification of bioavailability and bioconversion of beta-carotene to retinol in humans.
【期刊】：Anal Chem
【年、卷、期、起止页码】：2000 Oct;72 (20):  4999-5003
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【序号】：3

【作者】: Wang Y , Chang WY , Prins GS , van Breemen RB .
【题名】：Simultaneous determination of all-trans, 9-cis, 13-cis retinoic acid and retinol in rat prostate using liquid chromatography-mass spectrometry.
【期刊】：J Mass Spectrom
【年、卷、期、起止页码】：2001 Aug;36 (8):  882-8
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【序号】：4

【作者】: Gundersen TE , Bastani NE , Blomhoff R .
【题名】：Quantitative high-throughput determination of endogenous retinoids in human plasma using triple-stage liquid chromatography/tandem mass spectrometry.
【期刊】：Rapid Commun Mass Spectrom
【年、卷、期、起止页码】：2007 ;21 (7): 1176-86
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