Gas Chromatograph

Halogenated gases measurements are performed by a Gas Chromatograph -Mass Spectrometry (Agilent 6890/5973) preconcentration/thermal-desorption(Unity-Markes).
 
Citation proposal
(2011) . Gas Chromatograph. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/0247377b-d149-4960-ab40-14ae2ed630de
 

Identification

Data identification

Citation

Alternate title
Flask Sampling
Date ( Publication )
2011-04-01T19:01:00
Purpose
Measurement of greenhouses gas concentration (CFC, HFC, HCFC,...). Air samples at the NCO-P are collected by drawing ambient air into 1-liter stainless steel flasks by means of an ultra clean air pump, over a period of about 10 min, reaching the pressure 1.8×105 Pa. Air aliquots are then analysed by gas chromatography-mass spectrometry (Agilent 6890–5973 GC-MS) equipped with an auto-sampling/pre-concentration unit (Markes International UNITY-Air Server).To obtain new information on the halogenated gas levels and variability in the high Himalayas; to quantify trends in the atmospheric record of anthropogenic halocarbons in the high Himalaya; to identify source regions and origin of these compounds including biogenic processes.
Status
Completed

  Point of contact

  +39 035 3230551 
Website
ttp://www.evk2cnr.org/  

  Point of contact

  +39 051 639 9652 

  Principal investigator

  +39 0722 303310 
Website
http://www.uniurb.it/  
Maintenance and update frequency
As needed
Keywords
  • SHARE , Network , Station , High Altitude
Keywords ( Theme )
  • WMO , GAW , GAWSIS , CEOP
Keywords ( Place )
  • Nepal , Himalaya
Keywords ( Theme )
  • air , research , pollution , ecosystems , landscape , natural areas , climate , meteorology

Legal constraints

Use limitation
No conditions apply
Access constraints
Copyright
Other constraints
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
  • Environment
  • Geoscientific information
N
S
E
W


Supplemental Information
 

Distribution

Distribution

Digital transfer options

OnLine resource
SHARE Geonetwork portal  

SHARE Geonetwork portal

OnLine resource
ISAC EVK2-Nepal Climate Observatory - Pyramid website  

ISAC EVK2-Nepal Climate Observatory - Pyramid website

OnLine resource
GAWSIS (Global Atmosphere Watch Station Information System) report about Nepal Climate Observatory - Pyramid  

GAWSIS (Global Atmosphere Watch Station Information System) report about Nepal Climate Observatory - Pyramid

OnLine resource
Official website of CEOP-HE (Coordinated Energy and water cycle Observation Project - High Elevation)  

Official website of CEOP-HE (Coordinated Energy and water cycle Observation Project - High Elevation)

OnLine resource
5988-3072EN.pdf  

Gas Chromatograph -Mass Spectrometry (Agilent 6890/5973)

 

Quality

Data quality

Scope

Hierarchy level
Series
Other
data: halogenated gases
Statement
GCMS is a powerful tool for identifying and quantifying volatile and semivolatile compounds in a variety of samples. The gas chromatograph functions to separate a mixture into its constituents and the mass spectrometer performs the analysis which provides the fingerprint. This fingerprint can be searched in a library of fingerprints to make an identification of unknowns. For calibration purposes, every sample run is bracketed between two working standard runs. Working standards are actual air samples in turn calibrated against the SIO2005 (Scripps Institution of Oceanography) – UB98 (University of Bristol) scales, used within the AGAGE network.
 

Spatial rep.

Vector spatial representation

Topology level
Geometry only

Geometric objects

Geometric object type
Point
Geometric object count
1
 

Ref. system

Reference system identifier
EPSG / WGS 1984 / 7.4
 

Metadata

Metadata

File identifier
0247377b-d149-4960-ab40-14ae2ed630de   XML
Metadata language
eng
Character set
UTF8
Parent identifier
d83f95af-91e7-443e-974f-c7e1f0be700d
Hierarchy level
Series
Date stamp
2011-09-21T11:57:43
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0

  Point of contact

  +39 035 3230551 
Website
http://www.evk2cnr.org  
 
 

Md. constraints

Use limitation
No conditions apply
 

Md. maintenance

Maintenance information

Maintenance and update frequency
As needed
Date of next update
2011-03-31
Update scope
Series

  Point of contact

  +39 035 3230551 
Website
http://www.evk2cnr.org  
 

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