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Università di Urbino "Carlo Bo" - Chemical Science Institute
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25 Halocarbons[pptv] relevant for climate issues will be analysed in grab samples collected weekly. The following compounds are currently observed and analysed : - Halons H-1301, H-1211 - CFCs: CFC-11, CFC-12, CFC-113, CFC-114, CFC-115 - HCFCs: HCFC-22, HCFC-141b, HCFC-142b, HCFC-124 - CH3Cl, CH3Br, CH3I, CH2Cl2, CHCl3, CH3CCl3,CCl4, TCE, PCE - HFCs:HFC-134a, HFC-152a, HFC-125
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Halogenated gases measurements are performed by a Gas Chromotograph -MS (Agilent 6890/5973) preconcentration/ thermal-desorption(Unity-Markes). 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).
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25 Halocarbons[pptv] relevant for climate issues will be analysed in grab samples collected weekly. The following compounds are currently observed and analysed : - Halons H-1301, H-1211 - CFCs: CFC-11, CFC-12, CFC-113, CFC-114, CFC-115 - HCFCs: HCFC-22, HCFC-141b, HCFC-142b, HCFC-124 -CH3Cl, CH3Br, CH3I, CH2Cl2, CHCl3, CH3CCl3,CCl4, TCE, PCE -HFCs:HFC-134a, HFC-152a, HFC-125
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Halogenated gases measurements are performed by a Gas Chromatograph -Mass Spectrometry (Agilent 6890/5973) preconcentration/thermal-desorption(Unity-Markes).
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25 Halocarbons relevant for climate issues will be analysed in grab samples collected weekly.