SSH ISO 12884:2000

Ajri i mjedisit - Përcaktimi hidrokarbureve aromatike policikilike të përgjithshëm (në fazë të gaztë dhe të ngurtë) - Mbledhja në filtra me sorbent dhe analiza me gaz-kromatografi /masë spektrometri

Ambient air — Determination of total (gas and particle-phase) polycyclic aromatic hydrocarbons — Collection on sorbent-backed filters with gas chromatographic/mass spectrometric analyses

Scope

This International Standard specifies sampling, cleanup and analysis procedures for the determination of polycyclic
aromatic hydrocarbons (PAH) in ambient air. It is designed to collect both gas-phase and particulate-phase PAH
and to determine them collectively. It is a high-volume (100 l/min to 250 l/min) method capable of detecting
0,05 ng/m3 or lower concentrations of PAH with sampling volumes up to 350 m3. The method has been validated
for sampling periods up to 24 h.
Precision under normal conditions can be expected to be _ 25 % or better and uncertainty _ 50 % or better (see
annex A, Table A.1).
This International Standard describes a procedure for sampling and analysis for PAH that involves collection from
air on a combination fine-particle filter and sorbent trap, and subsequent analysis by gas chromatography/mass
spectrometry (GC/MS).