Table 1 Review of observed NH3 concentrations at different locations.
From: Atmospheric ammonia and its impacts on regional air quality over the megacity of Shanghai, China
Locations | Type | Period | NH3 (ppb) | Methodology | Reference |
|---|---|---|---|---|---|
Shanghai | Urban | 2013.7–2014.9 | 6.2 ± 4.6 | DOAS | This study |
China | Rural | 2013.7–12, 2014.3–6 | 12.4 ± 9.1 | MARGA | |
Industrial | 2014.1–6 | 17.6 ± 9 | DOAS | ||
Bejing | Urban | 2007.1.23–2.14 | 7.21 ± 4.941 | Aunular Denuder | |
China | 2007.8.2–31 | 33.46 ± 9.111 | |||
Bejing | Urban | 2008.2–2010.7 | 22.8 ± 16.3 | Passive Sampler | |
China | Rural | 2007.1–2010.7 | 10.2 ± 10.8 | ||
North Plain | Rural sites | 2008.8–2009.9 | 20.61 | Passive Sampler | |
Kampur | Urban | 2007.4.8–6.30 | 23.7 ± 5.11 | Online NOx–NH3 | |
India | 2007.12.1–2008.1.31 | 21.5 ± 6.61 | analyzer | ||
Seoul | Urban/GJ | 2010.9.1–2011.8.23 | 10.9 ± 4.25 | WS-CRDS2 | |
Korea | Urban/GS | 12.3 ± 4.23 | |||
Labore | Urban | 2005.12–2006.2 | 30.3–116.9 | Aunular Denuder | |
Taiwan | Industrial | 2003.9–2004.12 | 100.2 (Neipu) | Passive Sampler | |
72.8 (Pingtung) | |||||
84.9 (Pingtan) | |||||
USA | Urban/Atlanta | 2007.7–12 | 1.35 ± 1.19 | Citric Acid Denuder | |
Rural/Georgia | 3.32 ± 2.37 | Difference Technique | |||
Houston, TX | Urban | 2010.2.12–3.1 | 2.42 ± 1.16 | EC-QCL-based | |
USA | 2010.8.5–9.25 | 3.07 ± 2.87 | sensor3 | ||
Wisconsin | Urban | 2009.1.1–3.31 | 2.3 | iCAMs4 | |
USA | Rural | 2.4 | |||
USA | Forest/Brent | 2013.6.1–7.15 | 1–2 | CIMS5 | |
Urban/Kent | 2013.8.31–9.20 | Up to 6 | |||
Ontario | Rural | 2010.3.30–2011.3.29 | 4.71 | Passive Sampler | |
Vredeped | Rural | 2009.12.16–2010.2.18 | Up to 197.61 | DOAS | |
Barcelona | Urban BC | 2011.5.6–9.7 | 2.9 ± 1.3 | On-line Instrument | |
Spain | Urban CC | 2011.5.13–6.28 | 7.5 ± 2.8 |
