کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1186665 963445 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Geochemical and instrumental fundamentals for accurate and precise strontium isotope data of food samples: Comment on “Determination of the strontium isotope ratio by ICP-MS ginseng as a tracer of regional origin” (Choi et al., 2008)
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Geochemical and instrumental fundamentals for accurate and precise strontium isotope data of food samples: Comment on “Determination of the strontium isotope ratio by ICP-MS ginseng as a tracer of regional origin” (Choi et al., 2008)
چکیده انگلیسی

The strontium isotope composition of food samples has been successfully used to trace the provenance of both herbal and animal agricultural products. Adequately accurate and precise 87Sr/86Sr ratios, however, are key to unravel environmental and anthropogenic strontium contributions of specific growing areas. In a recently published analytical method in Food Chemistry by Choi et al. (2008) a demonstrably inadequate protocol for the determination of 87Sr/86Sr ratios of ginseng is presented. Based on well established geological and analytical fundamentals the 87Sr/86Sr ratios presented by Choi et al. (2008) are too inaccurate and imprecise to be used to trace the origin of the ginseng. Appropriate wet chemical separation techniques and mass spectrometric instrumentation enables the generation of 87Sr/86Sr data with very low expanded uncertainties (<0.05%, k = 2). Those high quality data allow the identification of even small strontium contributions of source reservoirs or physical and anthropogenic processes if diagnostic isotope compositions are present.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 121, Issue 3, 1 August 2010, Pages 918–921
نویسندگان
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