Gas Chromotograph-MS analyser

Halogenated gases measurements are performed by a GC-MS analyser (Agilent GC6850/MS5975C) coupled with a preconcentration&thermal desorber unit (Unity2 – Markes Iternational).

Citation proposal
(2011) . Gas Chromotograph-MS analyser. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/0d008704-b791-4d14-958e-960d7713ca5f

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Date ( Publication ): 2011-04-05T03:00:00

Purpose

These observations contribute in:

1) developing a long-term European observation system to measure almost all of the important gases species in the Montreal Protocol (e.g. CFCs and HCFCs) to protect the ozone layer and most of the significant non-CO2 gases in the Kyoto Protocol (e.g. HFCs) involved in the atmospheric radiative forcing and climate change.

2) To accurately document the global distributions and temporal behavior of the biogenic/anthropogenic gases CH3Cl, CH3Br, CH2Cl2, and CHCl3.

3) To provide an accurate data base on the rates of accumulation of trace gases over the globe which can be used to test the synoptic-, regional- and global-scale circulation predicted by three dimensional models and/or to determine characteristics of the sources of these gases near the stations.

Status: On going

Point of contact

Urbino University - Dipartimento di Scienza di Base e Fondamenti - Michela Maione ( )

piazza Rinascimento 6 Urbino PU I-61029 Italy

+39 0722 303316

Maintenance and update frequency: As needed

Keywords ( Theme )

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Keywords

CFC , HFC , HCFC , High Altitude , Apennines , , SHARE , Montreal protocol , Network , Station

Keywords

GAW , Atmospheric conditions , Environmental monitoring facilities

Keywords ( Theme )

NEXTDATA

Keywords ( Theme )

Keywords

CFC , HFC , HCFC , High Altitude , Apennines , , SHARE , Montreal protocol , Network , Station

Keywords

GAW , Atmospheric conditions , Environmental monitoring facilities

Keywords ( Theme )

NEXTDATA

Keywords ( Theme )

Keywords

CFC , HFC , HCFC , High Altitude , Apennines , , SHARE , Montreal protocol , Network , Station

Keywords

GAW , Atmospheric conditions , Environmental monitoring facilities

Keywords ( Theme )

NEXTDATA

Keywords ( Theme )

Keywords

CFC , HFC , HCFC , High Altitude , Apennines , , SHARE , Montreal protocol , Network , Station

Keywords

GAW , Atmospheric conditions , Environmental monitoring facilities

Use limitation: Data Sharing and Publication Policy at DISTRIBUTION SECTION

Access constraints: Intellectual property rights

Other constraints

Spatial representation type: Vector

Character set: UTF8

Topic category

Climatology, meteorology, atmosphere
Geoscientific information
Environment

Reference system identifier: EPSG / WGS 1984 / 7.4

OnLine resource: SHARE Geonetwork
SHARE Geonetwork

OnLine resource: gn:share_station
Show geographic position

OnLine resource: View in Google Earth
View in Google Earth

OnLine resource: SHARE_DSPP_10042014.pdf
SHARE Data Sharing and Publication Policy

OnLine resource: Data_Request_Form.pdf
SHARE Meteorological Data Request Form

Hierarchy level: Series

Statement: Halogenated gases measurements are performed by a GC-MS analyser (Agilent GC6850/MS5975C) coupled with a preconcentration&thermal desorber unit (Unity2 – Markes Iternational). One liter air samples are collected on a adsorbing trap at -30°C and desorbed into the chromatographic column. One entire measurement tooks one hour and the air sample measurements are alternated by working standard measurements in order to detect and correct short-term instrument sensitivity fluctuations. Calibration of working standard is performed every month with the same instrument but comparing with a Gold Standard, a tank filled and calibrated at Mace Head station by University of Bristol, in the frame of the AGAGE network. All the concentration are reported in the SIO05 / SIO07 /UB98 scale, depending on compounds