The determination and application of Sr-87/Sr-86 ratio in verifying geographical origin of wheat
文献类型: 外文期刊
第一作者: Liu, H.
作者: Liu, H.;Wei, Y.;Wei, S.;Jiang, T.;Zhang, Y.;Guo, B.;Lu, H.;Ban, J.
作者机构:
关键词: Sr-87/Sr-86;geographical origin;TIMS;Rubidium (Rb);Strontium (Sr)
期刊名称:JOURNAL OF MASS SPECTROMETRY ( 影响因子:1.982; 五年影响因子:2.03 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: As Sr-87/Sr-86 ratio plays a significant role in authenticating the geographical origin of foodstuff, it is important to identifywhere the Sr-87/Sr-86 signature in food comes from, and themethods of Sr-87/Sr-86 ratio analysis in food and environmental samples. Wheatwith three genotypes, soil and groundwater samples were collected from three regions of China during harvest time of 2014. The Sr-87/Sr-86 ratios in the samples were determined by thermal ionization mass spectrometer in order to investigate the possible source of Sr-87/Sr-86 in wheat, and the concentrations of Rb and Sr in wheat and soils were also detected by inductively coupled plasma mass spectrometry and combinedwith Sr-87/Sr-86 ratio in order to trace the geographical origin ofwheat. The Sr-87/Sr-86 ratio, the contents Rb and Sr, and Rb/Sr ratio of wheat and soil samples showed significant differences among three regions. The Sr-87/Sr-86 ratios and the concentrations of Rb and Sr in soils were higher than those in corresponding wheat. The Sr-87/Sr-86 ratio in wheat was identical to that corresponding soil NH4NO3 extracts (labile fraction of soil) and groundwater. Wheat uptake more Rb than Sr. 3D distribution of Sr-87/Sr-86, Rb and Sr could identify wheat samples from different regions clearly. The Sr-87/Sr-86 ratio of wheat reflects the Sr-87/Sr-86 ratio of the associated environment including soil and groundwater. It is expected that the use the parameters of Sr-87/Sr-86 ratio, the contents of Rb and Sr will allow to trace geographical origin of wheat. Copyright (C) 2017 John Wiley & Sons, Ltd.
分类号: O65
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