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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.
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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
Affiliated Colleges: