Quantitative determination of rare earth elements in scheelite via LA-ICP-MS using REE-doped tungstate single crystals as calibration standards

Preparation of REE-doped NaY(WO4)2 single crystals for quantitative determination of rare earth elements in REE:NaY(WO4)2 laser crystals by LA-ICP-MS

“…The reasons can be found in our previous studies that thorough mixing of starting materials, complete melting of polycrystalline materials and slow pulling using c -cut pure NaY(WO 4 ) 2 seeds to restrain other crystal phases were carried out when preparing single crystals using the Czochralski technology. 37,43 All in all, REEs were quite homogeneously distributed in NaYW-500, which ensures the representativeness of direct solid sampling and serves as a candidate reference material for in situ microanalysis of REE-doped NaY(WO 4 ) 2 laser crystals.…”

“…The digestion procedure can be found in the previous paper. 37,43 In brief, ca. 50 mg of sample powder was weighed into a Teflon vessel, digested by high pure HNO 3 (1 mL) and HF (1 mL) at 190 °C for 48 h, and further diluted to ca.…”

Influence Of Spot Size On LA-ICP-MS Ablation Behavior For Synthetic Calcium Tungstate And Silicate Glass Reference Material NIST SRM 610

“…To minimize analytical errors resulting from elemental fractionation, the matrix-matched calibration strategy is proposed. [25][26][27] The matrix-matched calibration standard CaW-1, which also has a matrix composition of CaWO4, has been synthesized in our previous work. 28 However, due to the different physical properties and chemical composition between calcium tungstate and silicate glass, the laser ablation settings for silicate glass may not be suitable for LA-ICP-MS analysis of scheelite.…”

Preliminary Characterisation of New Reference Materials (CaW‐0, CaW‐1 and CaW‐3) for Microanalysis of Rare Earth Elements in Scheelite by Laser Ablation‐Inductively Coupled Plasma‐Mass Spectrometry

“…Consequently, there is a high demand for appropriate reference materials for LA‐ICP‐MS analyses (Ke et al . 2019a, Boer et al . 2022, Lv et al .…”

“…This highlights the importance of accurately determining trace elements in scheelite, particularly for microanalysis, as it often comprises various mineral phases such as wolframite, quartz, muscovite and apatite (Zhang et al 2020). Numerous studies on microanalysis of REEs in scheelite have been conducted, utilising a range of techniques, including electron probe microanalysis (EPMA) (Fu et al 2017, scanning electron microscopy combined with energy dispersive X-ray spectroscopy (SEM-EDX) (Zhao et al 2018) and laser ablation-inductively coupled plasmamass spectrometry (LA-ICP-MS) (Chen et al 2020, Ke et al 2019a, Ke et al 2019b, Li et al 2023, Lin et al 2020, Wang et al 2022, Zhang et al 2022a).…”