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Title:
CSPs: Gaseous concentration of nitrogen dioxide (NO2) and ammonia (NH3) for estimating dry deposition of nitrogen in the GNNR
Access rights:
Private
Usage rights:
Contact the principle investigator for usage permission.
Published:
not published yet
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.
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
Temporal extent:
No information available
Taxonomic extent:
NA
Measurement cirumstances:
No information available
Data analysis:
No information available

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Dataset column

Name:
Year
Definition:
year
Unit:
No information available
Datagroup:
Date time information
Keywords:
No information available
Values:
2008
2009
Contributors:
No information available

Dataset column

Name:
Month
Definition:
measurement month
Unit:
No information available
Datagroup:
Date time information
Keywords:
No information available
Values:
February
December
January
August
April
Contributors:
No information available

Dataset column

Name:
Location
Definition:
Location of measurement site: field or forest
Unit:
No information available
Datagroup:
Subplots within CSPs
Keywords:
No information available
Values:
Forest
Field
Contributors:
No information available

Dataset column

Name:
Replicate
Definition:
number of replicated measurement: 2 sampling tubes have been installed for N02 and NH3, respectively
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
1
2
Contributors:
No information available

Dataset column

Name:
NO2
Definition:
nitrogen dioxide concentration
Unit:
microgrammPerCubic meter
Datagroup:
Nitrogen
Keywords:
No information available
Values:
1.650582245039871
1.5673913130807955
1.5028896129540135
1.6
1.5885890260994908
Contributors:
No information available

Dataset column

Name:
NH3
Definition:
ammonia concentration
Unit:
microgrammPerCubic meter
Datagroup:
Nitrogen
Keywords:
No information available
Values:
0.24389073032729966
0.2879429669235933
0.2705749784424877
0.16637579988365334
0.28346777544548196
Contributors:
No information available

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4 trogisch medium

Stefan
Trogisch

Owner of:
14 Datasets

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5 scherer lorenzen medium

Michael
Scherer-Lorenzen

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