Recent developments and trends in the application of strontium and its isotopes in biological related fields

Abstract

Strontium is a chemical element without biological functions in humans. In fact, only two biological roles are known, both as a biomineral constituent. However, strontium and calcium (a significant biometal) present chemical similarities; hence, the absorption of the former by living organisms is plausible. Based on the particular properties of isotopes of strontium several applications of this chemical element in biological sciences have been developed. These include its radioactive and non-radioactive isotopes in medical applications or resorting to its stable isotopes as analytical tools in isotope fingerprinting (87 Sr/ 86 Sr) to study dietary habits and migration patterns of ancient populations, food authentication and forensic sciences. This article, reviews papers published between 2012-2016, highlights the use of strontium isotope ratios for such biological related applications and compiles an analytical database, providing a valuable tool for future studies in the area.

Botanical ingredient identification and quality assessment: strengths and limitations of analytical techniques

“…Isotope ratio analysis requires precise measurement in order to detect the usually small differences in the isotopic compositions between test samples and the standard (Kelly et al 2005). Isotope ratio mass spectrometry (IRMS) is used for the determination of light isotope ratios, whereas heavier elements are analysed by thermal ionization mass spectrometry (TIMS) (Coelho et al 2017). Multicollector inductively coupled plasma mass spectrometry (MD ICP-MS) was developed in order to improve ionization efficiency for elements [ 7.5 eV ionization energy and to shorten sample preparation and time of analysis (Coelho et al 2017;Danezis et al 2016).…”

“…Isotope ratio mass spectrometry (IRMS) is used for the determination of light isotope ratios, whereas heavier elements are analysed by thermal ionization mass spectrometry (TIMS) (Coelho et al 2017). Multicollector inductively coupled plasma mass spectrometry (MD ICP-MS) was developed in order to improve ionization efficiency for elements [ 7.5 eV ionization energy and to shorten sample preparation and time of analysis (Coelho et al 2017;Danezis et al 2016). Recently the Chicago Instrument for Laser Ionization (CHILI) was proposed as new technique for isotope measurement (Coelho et al 2017;Stephan et al 2016).…”

“…Multicollector inductively coupled plasma mass spectrometry (MD ICP-MS) was developed in order to improve ionization efficiency for elements [ 7.5 eV ionization energy and to shorten sample preparation and time of analysis (Coelho et al 2017;Danezis et al 2016). Recently the Chicago Instrument for Laser Ionization (CHILI) was proposed as new technique for isotope measurement (Coelho et al 2017;Stephan et al 2016). For data interpretation various methods of multivariate analysis are employed.…”

The combined measurement of 87Sr/86Sr isotope ratios and 88Sr/85Rb elemental ratios using laser ablation MC-ICP-MS and its application for food provenance studies: the case for Asturian beans

“…Many analytical techniques have been proposed for food authentication purposes [2] including both molecular and elemental Mass Spectrometry techniques. Isotope ratio measurements both for the light (H, C, N, O and S) and heavy (Sr, Pb) elements have been also proposed [3,4] and, in many cases, in combination with elemental concentrations [5,6]. The basic idea is that the isotope ratios for the heavy elements and/or the concentration of major, minor and trace elements in plants will reflect the geology of the soil in which the plant was grown.…”

New s‐block complexes of 1,10‐phenanthroline and 1,3‐benzothizole‐2‐thiolate inhibit ureasein silicoandin vitro

“…24 The heavier alkali/alkaline earth metals such as Cs + and Sr 2+ have received less attention, due the fact that they have no known biological functions in the human body. 25 1,10-Phenanthroline (phen) is a rigid and coplanar bidentate ligand (Figure 1). It offers an N,N 0 chelate pocket for cation binding in which the two N-donor atoms offer a rigid bidentate coordination environment.…”