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Author:

林立 (林立.) | 孙海波 (孙海波.) | 孙继红 (孙继红.) (Scholars:孙继红)

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CQVIP PKU CSCD

Abstract:

采用离子色谱-电感耦合等离子体质谱法测定奶粉中的硒形态.奶粉样品经乙酸沉淀蛋白,流动相提取.选用Hamilton PRP X-100阴离子柱(250mm×4.6 mm,5 μm),以5 mmol·L-1柠檬酸、10 mmol·L-1乙酸铵和0.1%(体积分数)三氟乙酸为流动相(pH 5.2),8 min内实现了硒酸盐[Se(Ⅵ)]、亚硒酸盐[Se(Ⅳ)]、硒代蛋氨酸(SeMet)和硒代胱氨酸[(SeCys)2]等4种硒形态的基线分离.方法的检出限在0.03~0.10 μg·L-1之间.加标回收率在25.0%~105%之间,测定值的相对标准偏差(n=6)在1.8%~7.8%之间.

Keyword:

奶粉 离子色谱 电感耦合等离子体质谱法

Author Community:

  • [ 1 ] [林立]北京工业大学
  • [ 2 ] [孙海波]国家食品质量安全监督检验中心
  • [ 3 ] [孙继红]北京工业大学

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Source :

理化检验-化学分册

ISSN: 1001-4020

Year: 2015

Issue: 9

Volume: 51

Page: 1227-1231

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: 9

Chinese Cited Count:

30 Days PV: 8

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