EN 10318:2005

Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus
   4.1 Glow discharge optical emission spectrometer
   4.2 Data acquisition
5 Sampling
6 Procedure
   6.1 Selection of spectral lines
   6.2 Optimising the glow discharge spectrometer settings
   6.3 Calibration
7 Verification of the analytical accuracy
8 Expression of results
   8.1 Method of calculation
   8.2 Precision
9 Test report
Annex A (normative) Calculation of calibration constants and
                    quantitative evaluation of depth profiles
Bibliography

This document specifies a glow discharge optical emission spectrometric method for the determination of the thickness and chemical composition of metallic surface coatings consisting of zinc and aluminium based alloys. The alloying elements considered are aluminium, nickel, silicon and lead.This method is applicable to zinc contents between 40 % (m/m) and 100 % (m/m); aluminium contents between 0,01 % (m/m) and 60 % (m/m); nickel contents between 0,01 % (m/m) and 15 % (m/m); silicon contents between 0,01 % (m/m) and 3 % (m/m); lead contents between 0,005 % (m/m) and 0,1 % (m/m).