GB/T 20931.12-2025: Methods for chemical analysis of lithium - Part 12: Determination of impurity element contents - Inductively coupled plasma atomic emission spectrometry

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Scope

This Document specifies the method for determining the content of impurity elements such as
aluminum, calcium, copper, iron, potassium, magnesium, sodium, nickel, lead, and silicon in
metallic lithium by inductively coupled plasma atomic emission spectrometry.
This Document is applicable to the determination of the content of impurity elements such as
aluminum, calcium, copper, iron, potassium, magnesium, sodium, nickel, lead, and silicon in
industrial-grade metallic lithium and battery-grade metallic lithium. The determination range is
shown in Table 1.

Basic Data

Standard ID	GB/T 20931.12-2025 (GB/T20931.12-2025)
Description (Translated English)	Methods for chemical analysis of lithium - Part 12: Determination of impurity element contents - Inductively coupled plasma atomic emission spectrometry
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H14
Classification of International Standard	77.120.99
Word Count Estimation	14,191
Date of Issue	2025-02-28
Date of Implementation	2025-09-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration