Informējam, ka Sistēma pielāgota darbam ar interneta pārlūkprogrammu Internet Explorer (8. un jaunākām versijām) un Mozilla Firefox (3.6 un jaunākām versijām).
Izmantojot citu interneta pārlūkprogrammu, brīdinām, ka Sistēmas funkcionalitāte var tikt traucēta.
This European Standard specifies the quantitative determination of 16 polycyclic aromatic hydrocarbons (PAH) according to the priority list of the Environmental Protection Agency (EPA, 1982) in soil, sludge, sediments, suspended solids and waste using GC/MS and HPLC-UV-DAD/FLD covering a wide range of PAH contamination levels (See also annex A). When using fluorescence detection acenaphthylene cannot be measured.The limit of detection is dependent on the determinants, the equipment used, the quality of chemicals used for the extraction of the sample and the clean up of the extract.Under the conditions specified in this International Standard, a lower limit of application of 0,01?? mg/kg (expressed as dry matter) can be ensured for each individual PAH.Waste, sludge and soil may differ in properties and also in the expected contamination levels of PAH. These differences make it impossible to describe one general extraction procedure. This standard contains a decision table based on the properties of the sample and the extraction procedure to be used. Two general lines will be followed, an agitation procedure (shaking)or use of Soxhlet/pressurised liquid extraction. The choice of extractionsolvent is more crucial than the procedure and the extraction devices itself for the extraction of PAH from the matrices. Since some of the target PAH are not so good soluble in the usual unpolar solvents such as petroleum ether and other hydrocarbons the choice of the solvents has to be made in accordance with the expected contamination level.This method is performance based. It is permitted to modify the method to overcome interferences not forseen in this standard, providing that all performance criteria in this method are met.Temporary Note: Sediments are supposed to be saphonified to get rid of the matrix. Nis is going to provide the related information( IUNESCO? And Nordic method)
Note: With this method also other PAH compounds can be analysed providing suitability is proven.
Reģistrācijas numurs (WIID)
26335
Darbības sfēra
This European Standard specifies the quantitative determination of 16 polycyclic aromatic hydrocarbons (PAH) according to the priority list of the Environmental Protection Agency (EPA, 1982) in soil, sludge, sediments, suspended solids and waste using GC/MS and HPLC-UV-DAD/FLD covering a wide range of PAH contamination levels (See also annex A). When using fluorescence detection acenaphthylene cannot be measured.The limit of detection is dependent on the determinants, the equipment used, the quality of chemicals used for the extraction of the sample and the clean up of the extract.Under the conditions specified in this International Standard, a lower limit of application of 0,01?? mg/kg (expressed as dry matter) can be ensured for each individual PAH.Waste, sludge and soil may differ in properties and also in the expected contamination levels of PAH. These differences make it impossible to describe one general extraction procedure. This standard contains a decision table based on the properties of the sample and the extraction procedure to be used. Two general lines will be followed, an agitation procedure (shaking)or use of Soxhlet/pressurised liquid extraction. The choice of extractionsolvent is more crucial than the procedure and the extraction devices itself for the extraction of PAH from the matrices. Since some of the target PAH are not so good soluble in the usual unpolar solvents such as petroleum ether and other hydrocarbons the choice of the solvents has to be made in accordance with the expected contamination level.This method is performance based. It is permitted to modify the method to overcome interferences not forseen in this standard, providing that all performance criteria in this method are met.Temporary Note: Sediments are supposed to be saphonified to get rid of the matrix. Nis is going to provide the related information( IUNESCO? And Nordic method)
Note: With this method also other PAH compounds can be analysed providing suitability is proven.
