Standard No.:	GB/T 12689.12-2004
Chinese Name:	锌及锌合金化学分析方法 铅、镉、铁、铜、锡、铝、砷、锑、镁、镧、铈量的测定 电感耦合等离子体-发射光谱
English Name:	The methods for chemical analysis of zinc and 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
Professional Classification:	H13 Heavy metals and their alloys analysis method
Professional Classification:	GB National Standard
ICS Classification:	77.040.30 Chemical analysis of metals
Issued by:
Issued on:	2004-04-30
Implemented on:	2004-10-01
Status:	VALID
Language:	English
File Format:	PDF
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1 Scope

This part specifies the methods for determining the contents of lead, cadmium, iron, copper, tin, aluminium, arsenic, stibium, magnesium, lanthanum and cerium in zinc and zinc alloy.
This part is applicable to the determination of the contents of lead, cadmium, iron, copper, tin, aluminium, arsenic, stibium, magnesium, lanthanum and cerium in zinc and zinc alloy.
The content ranges of determination are listed in Table 1.
Table 1
Element Pb Cd Fe Cu Sn Al As Sb La Ce Mg
Content / % 0.000 5~2.0 0.000 5 ~0.50 0.0005 ~0.30 0.000 2 ~6.00 0.0005~0.03 0.0005~12.0 0.001~0.02 0.002~0.5 0.005 ~0.5 0.005~0.5 0.005 ~0.5

2 Methods and Principles

Dissolve the test portion with dilute nitric acid, and use the inductively coupled plasma emission spectrometer in such nitric acid medium to determine the contents of lead, cadmium, iron, copper, tin, aluminium, arsenic, stibium, magnesium, lanthanum and cerium in zinc and zinc alloy.

3 Reagents and Materials

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