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Table 1 Particle number and mass concentrations measured during sampling and sample distribution for chemical analysis

From: Field evaluation of a new particle concentrator- electrostatic precipitator system for measuring chemical and toxicological properties of particulate matter

  Particle number PM2.5 mass concentration   
Test No. Ambient concentration (particles/cm3) ESP Penetration (%)a Ambient concentration (μg/m3) Enriched concentration (μg/m3) Enrichment Factor (EF)b Chemical analysis
1 16600 ± 2900 3.5 23.2 370.8   
2 21600 ± 5500 3.6 26.3 665.5 25.3 ICP-MS
3 14600 ± 3000 4.7 46.5 940.3 20.2 GC-MS
4 10400 ± 2900 5.0 29.5 827.1 28.0 ICP-MS
5 15900 ± 5300 3.5 11.9 252.8 21.2 GC-MS
6 21600 ± 9200 2.6 29.3 310.0 10.6 ICP-MS
7 12200 ± 4800 3.8 18.9 453.0 24.0 GC-MS
8 30800 ± 6200 3.1 19.0 323.0 17.0 IC
9 14000 ± 3000 9.6 17.0 463.2 27.2 GC-MS
10 15000 ± 4000 7.7 16.5 490.6 29.7 GC-MS
11 15000 ± 5000 9.6 17.7 265.9 15.0 GC-MS
12 14000 ± 3000 7.4 20.7 228.6 11.0 GC-MS
13 13000 ± 3000 8.9 14.5 252.5 17.4 GC-MS
14 12000 ± 3000 8.7 16.5 289.8 17.6 GC-MS
  1. a ESP penetration was determined as the ratio of particle number concentration penetrating ESP to the enriched particle number concentration before ESP.
  2. b EF (Enrichment factor) was determined as the ratio of enriched PM2.5 mass concentration from reference samplers to ambient PM2.5 mass concentrations from MOUDI.