Preparation of REE-doped CaF single crystals for accurate determination of REE concentrations in CaF crystals via UV-LA-ICP-MS.

Accurate determination of rare earth element (REE) concentrations in CaF crystals using UV-LA-ICP-MS is important but challenging due to the lack of matrix-matched reference materials. In this study, a REE-doped CaF single crystal (CaF-05), prepared via the Bridgman-Stockbarger technique, was systematically characterized to assess its optical properties, homogeneity, and stability. Analyses using portable laser irradiation, UV-vis spectroscopy, back scatter electron (BSE) imaging, and cathodoluminescence (CL) demonstrated that the crystal possesses high optical quality and exhibits distinct optical adsorption properties compared to the silicate reference material NIST SRM 610.

Preparation of matrix-matched calibration standards for accurate determination of elemental concentrations in uric acid stones by LA-ICP-MS.

Accurate determination of elemental concentrations in uric acid (UA) stones is crucial for understanding their formation process. However, the lack of matrix-matched calibration standards has limited the application of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) in this field. This study addresses this limitation by preparing a synthetic UA precipitate (UA-1) doped with 17 elements using a recrystallization method.

Elemental Imaging of Fertilized ZnO NP Wheat Endosperms Using Laser Ablation-Inductively Coupled Plasma Optical Emission Spectrometry.

Zinc (Zn) is an essential trace element in the human body, and its deficiency can seriously affect health. Agronomic Zn biofortification with ZnO nanoparticles (ZnO NPs) in consumable wheat prospectively relieves Zn deficiency. We developed an elemental quantitative imaging laser ablation-inductively coupled plasma optical emission spectrometry method to examine the distributions of Zn and other micronutrient elements in wheat grain and the endosperm.

Multi-element imaging of urinary stones by LA-ICP-MS with a homogeneous co-precipitation CaCO-matrix calibration standard.

Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) studies on trace element concentration and their spatial distribution in CaCO-matrix urinary stones are important but powerfully rely on matrix-matched external calibration. In this work, CaCO precipitate CaOx-1 which was doped with Mg, Cr, Mn, Fe, Co, Cu, Zn, and Sr was prepared by the homogeneous co-precipitation method. It had a homogeneous distribution of major (RSD of 0.

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

In REE:NaY(WO) laser crystals, optical properties like laser conversion efficiency are dependent on the doped rare earth element (REE) concentration, which necessitates the importance for accurate determination of the REE concentration in these precious samples. However, microanalysis of these samples by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) is often hampered by the lack of matrix-matched reference materials. In this work, a REE-doped NaY(WO) single crystal (NaYW-500) that has a nominal REE concentration of 500 μg g was synthesized and employed as a candidate reference material.

Elemental Analysis of Solid Food Materials Using a Reliable Laser Ablation Inductively Coupled Plasma Mass Spectrometry Method.

Quantification of trace and minor nutrient elements is crucial for maintaining human health. A reliable laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) method for food materials was developed by combining fine food powder ( < 3 μm) pellets as the external standard with an average content as the internal standard (IS). The finer and homogeneous aerosol produced by ablating the fine powder pellets is beneficial for transportation and analyte ionization in ICP, which helps alleviate the matrix effects and improves the analytical precision and accuracy.