Table 5 Test conditions of passive-mode tests (without forced air exchange)
From: Adsorbent media for the sustainable removal of organic air pollutants from museum display cases
Parameters | Adjustment/procedure |
|---|---|
Chamber volume [m3] | 1 |
Adsorbent weight [g] | ca. 200 |
Temperature [°C] | 23 ± 2 |
Relative humidity [%] | 50 ± 5 |
Air exchange rate [h−1] | 0; during air sampling: 0.5 |
Testing time [h] | 72 |
Injected target substances [µl] | Formalin (1%): 100 Acetic acid/formic acid: 6 Toluene/alpha-pinene: 3 |
Sampling intervals [h] | 0.3, 2, 4, 6, 24, 28, 32, 48, 72 |
Sampling VOCs | Adsorbent: Tenax TA®, sampling volume: 3 l, analysis: TD-GC/MS |
Sampling formaldehyde | Adsorbent: distilled water, sampling volume: 40 l, analysis: acetylacetone-fluorescence |
Sampling formic acid and acetic acid | Adsorbent: silica gel, sampling volume: 40 l, analysis: IC |