This standard specifies a combustion method for the determination of halogen and sulfur contents in materials by combustion in a closed system containing oxygen (calorimetric bomb), and the subsequent analysis of the combustion product using different analytical techniques.<\/p>\n
This method is applicable to solid, pasty and liquid samples containing more than 0,025 g\/kg of halogen and\/or 0,025 g\/kg of sulfur content. The limit of detection depends on the element, the matrix and the determination technique used.<\/p>\n
Insoluble halides and sulphate present in the sample or produced during the combustion step are not completely determined by these methods.<\/p>\n
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| 4<\/td>\n | Contents Page <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | European foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 5 Interferences 6 Hazards 7 Reagents and control mixtures 7.1 Reagents 7.2 Control mixtures <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Table 1 \u2014 Examples of control mixture to test the recoveries of halogens and sulfur with a defined analytical method 8 Sample conservation and pretreatment of test portion <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 9 Equipment 10 Procedure 10.1 General <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 10.2 Choice of the absorption solution <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Table 2 \u2014 Suitable combinations of absorption solution and determination technique for halogens and sulfur 10.3 Preparation of the bomb 10.4 Combustion <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 10.5 Collection of the halides and sulphate 10.6 Cleaning procedure <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 11 Recommended methods of determination Table 3 \u2014 Applicable methods (usually standardized at international levels) for analysing halogens and sulfur 12 Control measurements 13 Evaluation <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 14 Test report <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Annex A (informative) Performance characteristics Table A.1 \u2014 Performance characteristics for the determination of fluorine <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Table A.2 \u2014 Performance characteristics for the determination of chlorine Table A.3 \u2014 Performance characteristics for the determination of bromine <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Table A.4 \u2014 Performance characteristics for the determination of iodine Table A.5 \u2014 Performance characteristics for the determination of sulfur <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annex B (informative) Oxygen flask combustion by Schoeniger B.1 General B.2 Principle B.3 Interferences and hazards B.4 Reagents and control mixtures B.5 Equipment <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | B.6 Safety precautions B.7 Procedure B.7.1 General B.7.2 Choice of the absorption solution <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | B.7.3 Sample preparation B.7.3.1 General B.7.3.2 Solid and paste like samples B.7.3.3 Liquid samples B.7.4 Combustion B.8 Determination methods; control measurements; data evaluation and test report <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | B.9 Performance characteristics Table B.1 \u2014 Performance characteristics for the determination halogens and sulfur <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Figure B.1 \u2014 Procedure of Schoeniger flask combustion <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Annex C (informative) Recovery yields obtained for control mixtures with different absorption solutions and analytical techniques Table C.1 \u2014 Composition of the both mixtures used for the study <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Table C.2 \u2014 Recovery yields obtained for each element as function of the absorption solutions and analytical techniques used <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Annex D (informative) Examples of possible control substances Table D.1 \u2014 Example of possible control substances <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Annex E (informative) Additional results of inter-laboratory tests Table E.1 \u2014 Recovery of inorganic compounds in % <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Table E.2 \u2014 Comparison of different enhancer\/sample-ratio (bomb combustion) <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex F (informative) Summary of general requirements and recommendations Table F.1 \u2014 Summary of general requirements and recommendations <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Annex G (informative) Additional validation data G.1 General G.2 Samples <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | G.3 Homogeneity and stability Table G.1 \u2014 Results from homogeneity testing <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Characterization of waste. Halogen and sulfur content. Oxygen combustion in closed systems and determination methods<\/b><\/p>\n |