Determination of the Source of Bioavailable Sr Using ⁸⁷Sr/⁸⁶Sr Tracers: A Case Study of Hot Pepper and Rice

Abstract

The geographical origin of agricultural products has been intensively studied, but links between agricultural products and the environments are poorly established. Soils, water (streamwater and groundwater), and plants (hot pepper, Capsicum annuum; and rice, Oryza sativa) were collected from all regions of South Korea and measured Sr isotope ratios ((87)Sr/(86)Sr). Sequential leaching of soil showed that Sr in the exchangeable and carbonate fractions (bioavailable) had a lower (87)Sr/(86)Sr ratio than that in the silicate fraction, consistent with a low (87)Sr/(86)Sr ratio in the plant. Although the bedrock-soil-water-plant system is closely linked, statistical analysis indicated that (87)Sr/(86)Sr ratios of the plant showed the greatest agreement with those of water and the exchangeable fraction of soil. This study is the first report of (87)Sr/(86)Sr isoscapes in South Korea and first demonstrates that the agricultural product is strongly linked with the exchangeable fraction of soil and water.

Mapping of bioavailable strontium isotope ratios in France for archaeological provenance studies

“…Terrestrial baseline Sr/ 86 Sr ratio maps using different sample types and modelling methods have been produced for a number of regions at varying scales and spatial resolutions, for example for Europe (Voerkelius et al, 2010), Britain (Evans et al, 2010(Evans et al, , 2009, Denmark Frei, 2011, 2013), Netherlands (Kootker et al, 2016), Israel (Hartman and Richards, 2014), the contiguous USA Beard and Johnson, 2000), Alaska (Bataille et al, 2014;Brennan et al, 2014), the Caribbean region Laffoon et al, 2012), Mesoamerica (Hodell et al, 2004), Puerto Rico (Pestle et al, 2013), South Africa (Copeland et al, 2016;Sillen et al, 1998), and South Korea (Song et al, 2014). In addition, archaeological provenance studies on smaller spatial scales have been carried out in many areas around archaeological sites producing local baseline maps (Bentley, 2006;Price et al, 2004Price et al, , 2002Slovak and Paytan, 2012).…”

The determination and application of 87Sr/86Sr ratio in verifying geographical origin of wheat

“…As a result, younger rocks containing the low content of Rb such as basalt have the 87 Sr/ 86 Sr value of 0.706, whereas older rocks containing rich Rb such as granites tend to have the much higher values . Although 87 Sr/ 86 Sr ratio had been widely used to determine geographical origin of various foodstuffs including meat products, dairy products, cereals, wine, water, coffee beans, and olive oil, most of studies above focus on discriminating agro‐product, very a few focused on interpreting geographical variations of stable strontium isotopes in agro‐product with its environmental sources such as soil and water .…”

87Sr/86Sr isotope ratios in rocks determined using inductively coupled plasma tandem mass spectrometry in O2 mode without prior Sr purification

“…The amount of 87 Sr, thus, increases over time in a closed system with respect to Rb and Sr, and the degree of 87 Sr enrichment (expressed here as the 87 Sr/ 86 Sr ratio) relies on the age, Rb/Sr ratio, and initial 87 Sr/ 86 Sr ratio in the system, which provides the basis for the classic Rb–Sr dating of igneous rock crystallization Furthermore, for a very low Rb/Sr ratio in, for example, carbonates and river water, the radioactive accumulation of 87 Sr is negligible; 87 Sr/ 86 Sr can, therefore, be used as a provenance tracer to distinguish input and mixing processes from various Sr sources. By using the aforementioned processes, the 87 Sr/ 86 Sr ratio can be widely applied to various geological, hydrological, and biological materials over a range of timescales in earth, environmental, and agricultural sciences (Figure ).…”

“…Sr/ 86 Sr can, therefore, be used as a provenance tracer to distinguish input and mixing processes from various Sr sources. By using the aforementioned processes, the 87 Sr/ 86 Sr ratio can be widely applied to various geological, hydrological, and biological materials over a range of timescales in earth, environmental, and agricultural sciences [2][3][4][5][6][7][8][9][10][11] (Figure 1).…”