CSPs: Gaseous concentration of nitrogen dioxide (NO2) and ammonia (NH3) for estimating dry deposition of nitrogen in the GNNR

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Dataset Abstract

Gaseous concentration of nitrogen dioxide (NO2) and ammonia (NH3) was measured in Gutianshan for a period of 12 months (November 2008 - October 2009) for estimating dry deposition of nitrogen. Passive sampling tubes (www.passam.ch) were used to quantify NO2 and NH3 concentration at two measurement sites: 1) open field in front of the main gate of the Gutianshan Nature Reserve and 2) under the closed forest canopy close to CSP 9.

Dataset Design

Gaseous concentration of nitrogen dioxide (NO2) and ammonia (NH3) was measured in Gutianshan for a period of 12 months (November 2008 - October 2009) for estimating dry deposition of nitrogen. Commercial passive sampling tubes (www.passam.ch) were used to quantify NO2 and NH3 concentration at two measurement sites: 1) open field in front of the main gate of the Gutianshan National Nature Reserve and 2) under closed forest canopy close to CSP 9. The sampling tubes have been exposed continuously and replaced every month. At each site two passive sampling tubes for NO2 and NH3 have been installed, respectively, at a height of 1.5 m on a wooden pole.
NO2 measurement principle: "The sampler is based on that of Palmes and is a passive device requiring no power for its operation. It collects NO2 by molecular diffusion along an inert tube to an absorbent, in this case triethanolamine. The collected NO2 is determined spectrophotometrically by the well-established Saltzmann method. The samplers are placed in a special shelter to protect them from rain and minimize the wind influence." NO2-detection limit: 0.3 microgramPercubicmeter for 1 month exposure in the field.
NH3 measurement principle: "The diffusive sampler for ammonia collects gaseous ammonia by absorption on phosphoric acid. The amount of ammonia is determined spectrophotometrically by the indophenol method.The passive samplers are composed of a polypropylene housing with an opening of 20 mm diameter. To reduce wind disturbance a teflon membrane is attached, supported by a wire net. To protect the sampler from weather influences, as well as minimising wind disturbance, a protective shelter has to be used." NH3-detection limit: 0.3 microgramPercubicmeter for 1 months exposure in the field.

Spatial Extent

Gutianshan National Nature Reserve

Published

not published yet

Taxonomic Extent

NA

Data columns available in the raw data part of this dataset

Year
year
Data group: Date time information
Values
2008
2009
Month
measurement month
Data group: Date time information
Values
January
August
December
February
April
Location
Location of measurement site: field or forest
Data group: Subplots within CSPs
Values
Forest
Field
Replicate
number of replicated measurement: 2 sampling tubes have been installed for N02 and NH3, respectively
Data group: Helper
Values
2
1
NO2
nitrogen dioxide concentration
Unit: microgrammPerCubic meter
Data group: Nitrogen
Values
1.5673913130807955
1.650582245039871
1.6
1.5885890260994908
1.5028896129540135
NH3
ammonia concentration
Unit: microgrammPerCubic meter
Data group: Nitrogen
Values
0.2879429669235933
0.2705749784424877
0.28346777544548196
0.16637579988365334
0.24389073032729966