Matrix separation of Sr and Pb for isotopic ratio analysis of Ca-rich samples via an automated simultaneous separation procedure

Evaluating 87Sr/86Sr isotope ratios and Sr mass fractions in otoliths of different European freshwater fish species as fishery management tool in an Alpine foreland with limited geological variability

“…The plates were stored in polyethylene zip bags until further analysis. Measurements of elemental content and 87 Sr/ 86 Sr isotope ratios were performed consecutively in parallel on small flat areas of the upper side of the otoliths for a length of 150 µm for elemental content and 450 µm for 87 Sr/ 86 Sr isotope ratios using a Sr/ 86 Sr isotope ratios have been determined in several studies for FEBS-1 (Yang et al, 2011;Zimmermann et al, 2019) and NIST SRM 1400 (Romaniello et al, 2015;Zimmermann et al, 2019). Data reduction was done according to established procedures (Irrgeher et al, 2016;Prohaska et al, 2016;Retzmann et al, 2019).…”

“…SLRS-5 river water certified reference material (NRC, Canada) was used for method validation along with all sample preparation steps. Elemental ratios are elemental amount ratios.Prior to 87 Sr/ 86 Sr isotope ratio measurements, Sr/matrix separation using a Sr-specific extraction resin (Sr Spec Resin, Triskem, Bruz, France) was performed to remove the isobaric interferences of 87 Rb on 87 Sr(Horsky et al, 2016) as well as Ca-based polyatomic interferences that form in the plasma and potentially occur on all nominal Sr isotope masses(Zimmermann et al, 2019). The 87 Sr/ 86 Sr isotope ratios of the water samples were measured with a MC ICP-MS instrument (Nu Plasma HR, Nu Instruments, Wrexham, UK).…”

Assessing the potential of online ICP–MS analysis to optimize Ca/matrix separation using DGA Resin for subsequent isotopic analysis

“…Following the results of the successful quantification during online matrix separation, an optimized Ca/matrix separation procedure is proposed in Table 3 previous studies [22,23,27] should be considered to remove remaining REEs (e.g. Y and U, see Supplementary Table 3) from the DGA Resin.…”

“…0.5 cm 3 or 1 cm 3 ) are collected during incremental elution and analyzed for their elemental composition, leading to a elution profile (see e.g. [22,23]). Online analysis of analyte/matrix separation provides a powerful alternative to batch separation.…”

“…Inductively coupled plasma mass spectrometry (ICP-MS) is a preferable method for the measurement of eluted elements in online separation provided by high-performance liquid chromatography (HPLC) or ion chromatography (IC) [24], using micro-columns based on online flow injection [25,26] or automated systems [22,23]. The transient signals measured by the ICP-MS must be integrated for the quantification of analytes in the different elution steps to evaluate the separation efficiency and analyte recovery.…”