Air Monitoring Mercury Speciation in Air Monitoring and Emission Research


Monitoring networks in the USA, Canada, Korea, China and the EU have chosen Tekran (Canada)’s Model 2537B analyser, combined with the 1130/1135 modules to provide unattended, automated, continuous atmospheric mercury speciation measurements at the part per quadrillion level. The Model 2537S is the analyser for the Tekran Series 3300 Continuous Emission Monitor.


The Series 3300 can measure total, elemental and ionic mercury in virtually any combustion source. The system is sensitive enough to measure levels at


any coal fired power plant and is immune to the interferences that plague conventional mercury CEMs. Reader Reply Card no 112 New Ammonia Analyser


Tiger Optics (USA), keeping pace with explosive growth in the High Brightness Light-Emitting Diode market, announce plans to introduce ALOHATM, the world’s first ammonia analyser designed and manufactured exclusively for HB LED-related applications.


Tiger, a leading manufacturer of laser-based trace gas analysers renowned for clean technology, already sells devices to HB-LED makers, tool manufacturers and the gas companies that supply ammonia, the favored source of nitrogen for the production of Gallium nitride (GaN) compound semiconductor wafers, a core component of HB LEDs.


“Since 2004, we’ve sold almost 100 units in ammonia service around the world,” said Lisa Bergson, Tiger Optics’ founder and chief executive. We offer the most exacting and proven specifications in the field. With the surge in demand for HB LEDs, we realised that we could help our customers by designing an instrument tailored to their specific needs. We know that the purer the gas, the brighter the LEDs, and the bigger the margins for LED makers.”


High-brightness LEDs offer brighter, cooler light, with lower power consumption and longer life than traditional fluorescent lamps. Unlike fluorescents, HB LEDs use no mercury. Widely used in mobile appliances, such as cell phones, cameras, and the Apple iPad, HB LEDs are quickly gaining favor in larger devices. Demand is surging for HB LEDs to “backlight” the Liquid Crystal Display (LCD) units of TV screens and computer monitors.


Indeed, “backlight” applications are projected to account for 56 percent of the HB-LED market this year,


according to Robert Steele, Director of the Optoelectronics Program with Strategies Unlimited, the market research firm in Mountain View, CA that produces the “Strategies in Light” annual HB-LED conference. Steele, writing for LEDs Magasine in March, projected worldwide HB-LED sales of $8.2 billion this year, up 52 percent from 2009.


With its first-quarter sales, Tiger Optics surpassed its own goals for HB LEDs by 250 per cent and validated the bullish outlook of industry seers. Spurred by such customer demand, Tiger has developed the ALOHA analyser, to deliver the compact footprint, sensitivity, robustness, low cost of maintenance, speed of response, and uninterrupted throughput that the HB-LED market demands and deserves.


Reader Reply Card no 114


Sample Gas Conditioners Comply with Requirements of CEMs Integrators


The new JCL 300 series from JCT (Austria) offers availability, safety and long-term stability for extractive analysis. It optimises constant emission monitoring of industrial comb - ustion processes. This innovation fulfils all needs and expectations of system houses. Thus providing inexpensive


procurement and assembling.


The new conditioners incorporate an advanced modular design. Housings are available in wall-mount and 19”-rack. Delivery in compact basic units for 1 or 2 gas paths, extended versions for up to 4 gas paths and corresponding numbers of integrated condensate pumps.


Added options like condensate leakage monitors, gas filters, flow meters, guarantee comprehensive gas conditioning. Preventive monitoring, fault diagnosis, and RS485 interface increases the operating reliability significantly.


Reader Reply Card no 115


Stack Emission Monitoring


Modular HR2000 spectrometers from Ocean Optics (The Netherlands), are enabling air quality monitoring in the Gulf of Mexico as part of Argos Scientific’s portable UV DOAS air monitoring system. Argos Scientific is working in conjunction with Hillsborough County, Florida, to monitor the environmental impact of the Deepwater Horizon oil spill in the Gulf of Mexico.


The project has special significance to Ocean Optics as the company is located on the Gulf side of Florida and its community will be affected in coming months as the oil advances, upsetting both water and air quality.


The HR2000 High-resolution Miniature Fibre Optic Spectrometer is a small-footprint spectrometer that provides optical resolution to 0.035 nm (FWHM). The modular spectrometer design allows users to select optical bench options such as the detector, grating and entrance aperture (slit).


Argos custom-configured the HR2000 spectrometer used in its portable UV DOAS air monitoring system. In the Gulf, the system has already analysed a number of environmental samples, containing a mixture of oil and sea water, from the spill area. Vapour analysed from the samples indicate the presence of two gases with unique UV spectral features being emitted from the samples. The data from these initial investigations will be used to update the system’s spectral libraries. A UV DOAS system has been set up in Mississippi for continuous monitoring, with real time data posted at: http://fenceline.org/test/map.php.


A second Argos system has been sent to the University of North Alabama, where a calibration and test facility has been established to accommodate future samples associated with the oil and dispersant material collected by community members in the Gulf area.


Reader Reply Card no 113


Wind, Temperature, Humidity, Precipitation, Solar Radiation, Atmospheric Pressure, Win emperature, Humidity, Precipitation, Solar Radiation, Atmospheric Pressure, Wind, Tem ture, Humidity, Precipitation, Solar Radiation, Atmospheric Pressure, Wind, Temperatur umidity, Precipitation, Solar Radiation, Atmospheric Pressure, Wind, Temperature, Hum y, Precipitation, Solar Radiation, Atmospheric Pressure, Wind, Temperature, Humidity, recipitation, Solar Radiation, Atmospheric Pressure, Wind, Temperature, Humidity, Prec


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Meteorological Instruments


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Electrochemical sensors are widely used for stack emission monitoring. They provide accurate data and are more cost effective than other technologies. In stack emission monitoring there are often 10 or more components present in the gas at relevant concentration. Therefore the reliability of the results depends strongly on the selectivity of the used sensors. The Slim-Sensors of MEMBRAPOR(Switzerland) are best suited for this demanding detection. The advantage of these sensors is based on a unique technology of electrode manufacturing, which leads to a very high selectivity, and on specific filters with high capacity. Additionally, some sensors are equipped with a 4th auxiliary electrode to compensate a remaining cross interference. The housing of the Slim-Sensors is in a robust 3-series size and withstands the harsh conditions of emission gas monitoring.


Reader Reply Card no 116


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Air Quality Monitoring in Gulf of Mexico Spill Zone


August/September 2010 AET


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