This document describes the criteria and the procedure for analysing aluminium and aluminium alloys with spark optical emission spectrometry (S-OES). The scope of this document covers the following: – sample preparation; – operational guidelines for an optical emission spectrometer (including maintenance); – traceability of the analytical results to the International System of units: mass (kg); – assessing the uncertainty associated with each analytical result. This document refers to simultaneous spark emission spectrometers for the analysis of solid samples. It applies to the determination of silicon, iron, copper, manganese, magnesium, chromium, nickel, zinc, titanium, boron, gallium, vanadium, beryllium, bismuth, calcium, cadmium, cobalt, lithium, sodium, phosphorus, lead, antimony, tin, strontium and zirconium in aluminium and aluminium alloys. Elements other than those listed above may be analysed on the condition that: a) suitable reference materials are available; and b) the instrument is suitably calibrated and equipped. In the case of determining mercury, for compliance purposes an alternate method with a limit of quantification < 0,000 1 % is recommended as its detection is compromised by intense iron interference at 253,65 nm. The test result obtained from a spark optical emission spectrometer generally concerns an amount of less than one milligram per spark spot. The result can be used to refer to the laboratory test sample, to the aluminium or aluminium alloy melt or to the cast product.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 41<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | European foreword <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and abbreviations <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | 5 Principle 6 Apparatus 6.1 Spark optical emission spectrometer 6.2 Equipment for sample preparation 7 Consumables and reference materials 7.1 Consumables <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | 7.2 Reference materials and recalibration samples 8 Samples 8.1 General case <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | 8.2 Sampling of finished and semi-finished products 8.3 Sample preparation 9 Operating conditions of the spectrometer and measurements <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | 10 Calibration procedure 10.1 General 10.1.1 Calibration process 10.1.2 Range of calibration 10.1.3 Number of sparks on calibration samples <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | 10.2 Calibration 10.3 Recalibration 10.4 Type recalibration 10.5 Alloy group recalibration with simultaneous calibration <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | 11 Accuracy (precision and trueness) 12 Controls 13 Test report <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Annex A (informative) Representative sparking area <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | Annex B (informative) Detailed information on calibration <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | Annex C (informative) Detailed information on recalibration <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Annex D (informative) Detailed information on accuracy and uncertainty <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | Annex E (informative) Guidance for controls <\/td>\n<\/tr>\n | ||||||
| 66<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Aluminium and aluminium alloys. Determination of the chemical composition of aluminium and aluminium alloys by spark optical emission spectrometry<\/b><\/p>\n |