T/CSRE 4001-2024 Active Group standards

T/CSRE 4001-2024 Determination of lithium content in rare earth fire-clay molten salt electrolytes using inductively coupled plasma atomic emission spectroscopy

Publish Date: 2024-10-12 Implement Date: 2024-10-12 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CSRE 4001-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2024-10-12

Implement Date: 2024-10-12

Scope

Scope: This document describes the method for determining the lithium content in rare earth fire-fusion molten salt electrolytes. This document is applicable to the determination of lithium in rare earth fire-fusion molten salt electrolytes, with a measurement range of 0.50% to 10.0%. Main Technical Content: The determination of lithium in rare earth fire-fusion molten salt electrolytes using inductively coupled plasma emission spectrometry. 2 Normative References The following documents are essential components of this document through normative references. Among them, the referenced documents with a specified date apply only to the version corresponding to that date; for unspecified date referenced documents, the latest version (including all amendments) applies to this document. GB/T 6379.2 — Measurement Methods and Accuracy of Results (Correctness and Precision) Part 2: Basic Methods for Determining the Repeatability and Reproducibility of Standard Measurement Methods GB/T 6682 — Specifications and Test Methods for Water Used in Analytical Laboratories GB/T 8170 — Rules for Rounding Numerical Values and Determination of Limit Values JJG 768 — Specifications for the Verification of Emission Spectrometers 3 Terms and Definitions This document does not define any terms or definitions. 4 Method Outline The sample is dissolved in nitric acid and perchloric acid to remove fluoride, then extracted with water and hydrochloric acid. After all the sample is dissolved, the emission intensity is measured at 670.7 nm on an inductively coupled plasma emission spectrometer in a hydrochloric acid medium. The lithium mass concentration is calculated using a standard curve, and the measurement results are expressed as a mass fraction. 5 Reagents or Materials Unless otherwise specified, only reagents certified as analytical grade or higher and water meeting the requirements of GB/T 6682 for secondary or higher grades are used in the analysis. L