GB/T 12689.12-2004 "The methods for chemical analysis of zincand zinc alloys--The determination of lead，cadmium，iron，copper，tin，aluminium，arsenic，stibium，magnesium lanthanum and cerium contents--The inductively coupled plasma-optical emission spectrometric method"

GB/T 12689.12-2004

The methods for chemical analysis of zincand zinc alloys--The determination of lead，cadmium，iron，copper，tin，aluminium，arsenic，stibium，magnesium lanthanum and cerium contents--The inductively coupled plasma-optical emission spectrometric method

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GB/T 1 2689.12 - 2004 "Methods for chemical analysis of zinc and zinc alloys, determination of lead, cadmium, iron, copper, tin, aluminum, arsenic, antimony, mg, lanthanum, cerium content Inductance-coupled plasma emission light spectrum method" stipulates the use of Inductance-coupled plasma emission light spectrum method for the determination of lead, cadmium, iron, copper, tin, aluminum, arsenic, antimony, mg, lanthanum, cerium in zinc and zinc alloys. After the sample is dissolved in dilute nitric acid, the elemental content is determined by Inductance-coupled plasma emission light spectrum. The standard covers requirements for reagents and materials, including sodiumhydrate, tartaric acid, matrix zinc granules, and preparation of various solutions to ensure the accuracy of analytical results.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.