Existing methods can not achieve rapid mass decomposition and multi-element analysis of graphite ore samples. In this study, it is found that molten lithium metaborate can destroy the structure of graphite, causing graphite C to be oxidized and decomposed in an oxygen environment. We have established a method for testing graphite ore samples with lithium metaborate at 950°C with melting-ultrasonic extraction-ICP-AES multi-element (Al, Ca, Fe, K, Mg, Mn, Na, P, Si, and Ti) testing. The verification results of the national first-level reference materials show that the detection limit of this method is low and the accuracy and precision are good. The results of the measured samples show no significant difference between this method and the classical chemical analysis method. This method has the following advantages over the existing ones: simple operation process, faster decomposition and testing, low reagent consumption, reduced possibility of sample contamination, and better results reproducibility.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2116/analsci.20P441 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Structural, vibrational, and luminescent properties of pure and Ce-doped magnesium lithium aluminoborate glass.
Appl Radiat Isot
December 2024
Departamento de Física, Universidade Federal de Sergipe, São Cristóvão, SE, Brazil. Electronic address:
The objective of this work was to study the properties of new vitreous samples of pure BAlMgLi and Ce-doped BAlMgLi produced by the melt-quenching method. The structural and vibrational characteristics of the samples were analyzed using x-ray diffraction (XRD), vibrational Raman spectroscopy, and vibrational Fourier transform infrared spectroscopy (FTIR). Optically stimulated luminescence (OSL) and thermoluminescence (TL) techniques were also used to identify whether the samples showed a response to ionizing radiation.
View Article and Find Full Text PDFGeochemical dataset of alluvial sediments in the Mbiame floodplain (NW Cameroon): Implication for provenance, paleoweathering, and maturity.
Data Brief
June 2024
Department of Geology, Mining and Environmental Science, University of Bamenda, P.O. Box 39, Bamenda, North-West Region, Cameroon.
To identify potential heavy minerals in the Mbiame floodplain in the Northwestern region of Cameroon, geochemical and petrographical data from alluvial deposits were utilized. The grains are mixed with inclusions of zircon and ilmenite, and the megacrysts come from felsic to intermediate igneous rocks like old basalt-andesite and magmatic gneiss. The Mbiame region lies between latitudes 6° 8' and 6° 24' N and longitudes 10° 39' and 10° 57' E, East of Mount Oku.
View Article and Find Full Text PDFCarbonate-Induced Structural Transformation of Lithium-Sodium Orthoborate to a Low-Viscosity Metaborate via CO Capture.
ACS Appl Mater Interfaces
November 2023
Department of Chemical Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8550, Japan.
This paper reports on the structural changes occurring within the lithium-sodium orthoborate crystal lattice during the solid-state absorption of CO. Results derived from Fourier transform infrared measurements indicate that the CO-saturated mixed-alkali metal orthoborate and its CO-lean metaborate counterpart essentially present the same spectral profile, suggesting that CO capture results in a fundamental shift of the orthoborate composition to the metaborate one. The implications of such a structural transformation were examined in the molten state at elevated temperatures through rheological measurements, and although confirming that the CO-lean metaborate exhibits a higher viscosity than the CO-lean orthoborate, the results suggest that incorporation of CO in the orthoborate ionic lattice dilutes the melt, leading to a remarkable reduction in its overall viscosity, despite causing a structural transformation from the less viscous orthoborate form to the more viscous metaborate one.
View Article and Find Full Text PDFInorganic crosslinked supramolecular binder with fast Self-Healing for high performance silicon based anodes in Lithium-Ion batteries.
J Colloid Interface Sci
November 2022
Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China. Electronic address:
Capacity retention is one of the key factors affecting the performance of silicon (Si)-based lithium-ion batteries and other energy storage devices. Herein, a three dimension (3D) network self-healing binder (denoted as PVA + LB) consisting of polyvinyl alcohol (PVA) and lithium metaborate (LiBO) solution is proposed to improve the cycle stability of Si-based lithium-ion batteries. The reversible capacity of the silicon electrode is maintained at 1767.
View Article and Find Full Text PDFOptimization of Lithium Metaborate Fusion and Post-ultrasonic Extraction for Multi-element Determination in Graphite by ICP-AES.
Anal Sci
December 2021
School of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China.
Existing methods can not achieve rapid mass decomposition and multi-element analysis of graphite ore samples. In this study, it is found that molten lithium metaborate can destroy the structure of graphite, causing graphite C to be oxidized and decomposed in an oxygen environment. We have established a method for testing graphite ore samples with lithium metaborate at 950°C with melting-ultrasonic extraction-ICP-AES multi-element (Al, Ca, Fe, K, Mg, Mn, Na, P, Si, and Ti) testing.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!