Standard No.:	GB/T 12689.12-2004
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 ind
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
Chinese Classification:	H13    Heavy metals and their alloys analysis method
Professional Classification:	GB    National Standard
ICS Classification:	77.040.30 77.040.30    Chemical analysis of metals 77.040.30
Issued by:	AQSIQ; SAC
Issued on:	2004-4-30
Implemented on:	2004-10-1
Status:	valid
Superseding:	GB/T 12689.12-1990 Zinc and zinc alloys―Determination of cadmium content―Flame atomic absorption spectrometric method
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	60.00
Delivery:	via email in 1 business day

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

Foreword II
1 Scope
2 Methods and Principles
3 Reagents and Materials
4 Apparatus
5 Sample
6 Analysis Procedures
7 Calculation of Analysis Results
8 Precision
9 Quality Assurance and Control
Appendix A (Informative) Working Conditions for Apparatus