Evaluation of direct sampling method for trace elements analysis in Chinese rice wine by ICP–OES
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- 作者：Xiao-Dong Pan (1)
Jun Tang (1)
Qing Chen (1)
Ping-Gu Wu (1)
Jian-Long Han (1) - 关键词：Rice wine ; ICP–OES ; Method validation ; Minerals ; Direct sampling
- 刊名：European Food Research and Technology
- 出版年：2013
- 出版时间：March 2013
- 年：2013
- 卷：236
- 期：3
- 页码：531-535
- 全文大小：230KB
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Jun Tang (1)
Qing Chen (1)
Ping-Gu Wu (1)
Jian-Long Han (1)
1. Zhejiang Provincial Center for Disease Control and Prevention, Xincheng Road No. 630, Hangzhou, 310051, China - ISSN：1438-2385
文摘
A direct sampling method by inductively coupled plasma optical emission spectrometry was evaluated for determining trace elements (Co, Cr, Cu, Fe, Mg, Mn, Se and Zn) in Chinese rice wine. The parameters of ICP (plasma power, nebulizer pressure and sampling speed) were optimized considering the complicated matrix. Both the nebulizer pressure and the sampling speed were kept low, and plasma power was set at a high value of 1.35?kW. The good accuracy was confirmed by the recovery test (>95?%). The relative standard deviation was less than 5?%. Comparing with the dry ashing and wet ashing method, direct sampling showed to be fast, reliable and simple. The data of trace metals in Chinese rice wine were obtained: Co (0.088-.106?mg/L), Cr (0.097-.164?mg/L), Cu (0.085-.126?mg/L), Fe (0.181-.308?mg/L), Mg (0.179-.311?mg/L), Mn (0.102-.184?mg/L), Se (0.219-.349) mg/L), and Zn (0.090-.139?mg/L).