2060 MARGA Monitor for AeRosols and Gases in ambient Air Continuous Measurements of Aerosols and Gases Ambient air quality: Critical for our health and the environment 02 According to the World Health Organization 91% of the When considering the effects of aerosols on health and world population lives in places where the WHO air qual-the environment, it is necessary to understand how they ity guidelines levels are not met. Ambient air (outdoor air are formed from their precursor gases and how their pol ution) in both cities and rural areas was estimated to concentration and composition vary with diurnal and cause 4.2 mil ion premature deaths worldwide in 2016. seasonal cycles. Continuous measurements of aerosols are required with suffi cient time resolution so that the various aerosol formation processes can be clarifi ed. Monitor ambient air continuously to Gases Aerosols simultaneously quantify aerosols and gases • HCl • Cl- The new 2060 MARGA from Metrohm Process Analytics • HNO • NO - offers sampling of gases and aerosols from the same air 3 3 • HONO • SO 2- mass. These are separated from each other by selective-4 • SO • NH + ly dissolving them in water. The resulting solutions are 2 4 then analyzed via ion chromatography with conductiv- • NH • Na+ 3 ity detection. Separating gases from aerosols al ows the • K+ detection of important precursor gases and the subse- • Ca2+ quent inorganic ionic species found in the aerosols. • Mg2+ Gas and aerosol sampling from the same air mass Wet Rotating Denuder (WRD) The WRD consists of two concentric glass tubes, form-ing an annulus which is constantly fed with dilute aque-ous H O solution. As these tubes rotate, a continuous 2 2 liquid fi lm forms on the inside of the outer cylinder and the outside of the inner cylinder. Ambient air is drawn in Wet Rotating Denuder (WRD) of the 2060 MARGA. and, due to high diffusion coeffi cients, close to 100% of acid gases and ammonia are stripped from the air mass. The resulting solution of gases is continuously sampled. Due to velocity of the air within the WRD and also the design creating laminar fl ow, aerosols and particulates pass through to the Steam-Jet Aerosol Col ector (SJAC). Steam-Jet Aerosol Collector (SJAC) After the WRD, the ambient air, stripped of its gaseous water soluble components, enters the SJAC. Super sa turated steam is introduced causing the aerosols to grow into larger, heavier droplets. Further on the air passes through a cyclone, col ecting the particles in water by inertial separation. The resulting solution of dissolved inorganic ionic aerosol species is continuously sampled at the bottom of the SJAC for analysis by ion chromatography along with the sample from the WRD. Steam-Jet Aerosol Col ector (SJAC) of the 2060 MARGA. 2060 MARGA – Fully-automated analysis 24/7 Based on the al -new 2060 online analysis platform from Results are stored in an onboard database, with various 03 Metrohm Process Analytics, the 2060 MARGA can oper-options for the transmission of «live» data to a central ate for up to 1 month unattended at a remote site. data platform. 2060 MARGA M (Monitoring) 2060 MARGA R (Research) The 2060 MARGA M is ideal for routine monitoring at a A fl exible version, ideal for research applications, fea-permanent site. Everything is packed into a single instru-tures the 2060 user interface and sample col ection wet ment, with separate subcabinets for the sample col ec-part. tion wet part, ion analysis cabinet with two IC channels with column oven for anion and cation determinations, plus reagent containers with level sensors. Sample analysis is carried out on a stand-alone Metrohm 940 Professional IC Vario TWO/SeS/PP, including se-quential suppression for the anion analysis channel. Instal ed on-site for a limited time campaign, the 2060 MARGA R works unattended in the same way as the The 2060 user interface displays trend graphs, program 2060 MARGA M. When not required for fi eld use, the progress and clear messages when user intervention is 940 ion chromatograph can be put to work in the labo-required. All data relevant to the measurements can be ratory, using an external PC and MagIC Net, to run any consulted on the touch screen or remotely with a suit-of the multitude of applications available from Metrohm. able application. Key Features • All new hardware, optimized for reliable operation and easy maintenance • Built-in Metrohm ion analysis excellence with latest hardware and MagIC Net software • Operation via full color touchscreen, with possibility of complete remote access • No need to calibrate as an internal standard is measured with every sample • Safe shutdown in the case of power failure • All versions supplied with standard validated application for ambient air monitoring • Detection limits without pre-concentration of 0.1 µg/m3 achievable • Analysis method can be adapted to determine MSA, oxalate, amines, or organic acids • Option for sample rates of 0.5 or 1.0 m3/hr., with self-cleaning critical orifice to regulate flow • Possibility to add external sample changer to collect excess sample for further analysis www.metrohm.com V. ohm Applikon B. 10 Subject to change without prior notice Layout by Alyson Lanciki, Metr 8.000.5282EN – 2018-