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Atmospheric Chemistry Laboratory
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ACL Instrumentation

Photo of Particulate matter samplers.
Particulate matter samplers.

 

Samplers

The Atmospheric Chemistry Laboratory (ACL) equipment includes three major groups of instruments. Regarding the sampling techniques there are three particulate matter samplers: two semi-automated filter samplers for the determination of PM2.5 and PM10 concentrations, respectively, and an automated (16 days autonomy) filter sampler for the determination of the fine and coarse fractions of particulate matter (PM2.5 and PM2.5-10). The aerosol mass concentration is determined by combining sampling data (such as sampling duration, flow and volume) and filter mass data derived from gravimetric measurements. Gas phase sampling takes place with radius geometry passive samplers and with pocket pumps of 0-200 ml/min flow followed by a suitable trap. In both cases, chemical analysis provides data concerning the levels of gaseous species subjected to our research interests.

 

Photo of Graphite furnace atomic absorption spectrometer with Zeemann correction and autosampler.
Graphite furnace atomic absorption spectrometer with Zeemann correction and autosampler.
Photo of Gas chromatographs with flame ionization and electron capture detector.
Gas chromatographs with flame ionization and electron capture detector.

Analytical equipment

The main analytical equipment consists of three chromatography systems (a high performance liquid chromatography with fluorescence and diode array detectors and two gas chromatographs, one with flame ionization/electron capture detector and a second one with mass spectrometer), a dual beam spectrometer, and two atomic absorption spectrometers (techniques of flame and graphite furnace with Zeemann correction and autosampler).

 



Photo of 6-digits microbalance with filter antistatic device.
6-digits microbalance with filter antistatic device.

Other equipment

Beside the analytical instruments at the A.C.L. is available auxiliary equipment used for the sample handling and purification procedures, solvent preparation, calibration and glassware cleaning purposes. There is a water purification system, two analytical microbalances (5 and 6 digits), a controlled vacuum and temperature evaporation system, an ultra sonic bath for sample processing and two high temperature laboratory ovens (1100oC and 330oC).

 

 
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