portable ambient air Articles

  • Simultaneous determination of PM fractions, particle number and particle size distribution in high time resolution applying one and the same optical measurement technique

    Abstract The Fidas fine dust monitoring systems comprise an optical aerosol spectrometer, which is characterized by very good instrument characteristics, and utilize a sophisticated approach to convert the measured information on particle number and particle size into mass concentrations. As monitoring of PM requires reliable and quality-controlled performance of the measuring systems, ...


    By Palas GmbH

  • Measurement of Toxic and Related Air Pollutants - Field-Emplaceable Air Samplers for Automated Ambient, Site, and IAQ Use (Including TO-17 Applications)

    Abstract Air samples taken on collection media for laboratory analysis remain a highly sensitive and cost-effective means of assessment. However, collection of samples can be difficult using nonautomated samplers, particularly over long terms or at remote locations. This paper describes a number of automated air samplers for sorbent-tube and filter use. The samplers are batterypowered, portable ...


  • The Portable FID for Stack Emissions: lightweight, compact, ergonomic, safe

    POLLUTION S.r.l. manufactures POLARIS FID analyser, a cutting-edge technology for the measurement of total hydrocarbons in ambient air and stack emission monitoring in accordance with EN 13526 and EN 12619. This analyser is based on Flame Ionization Detection (FID), a reference method technique to measure total hydrocarbons (THC, VOC, TOC). Polaris FID is a very handy instrument because it allows ...


    By Pollution Srl

  • Designing and Implementing Perimeter Air Monitoring Programs

    Perimeter or fenceline ambient air quality and meteorological monitoring programs have become increasingly valuable at hazardous waste, landfill, dredging, ports, and MGP remediation sites. Air quality monitoring programs protect public health and reduce owner liability ...


    By AECOM

  • Confronting allegations of air quality non-compliance

    A facility with an air quality permit must comply with all the conditions of that permit and demonstrate its compliance on an on-going basis. Unfortunately, no matter how diligently the facility and corporate staff strives to assure continuous compliance, unexpected compliance challenges can occur. For example, new equipment fails the emissions guarantees provided by equipment vendors; new staff ...


    By Trinity Consultants

  • Field Detection of Chlorinated Alkenes in Well Water using the FROG-4000 Portable GC - Case Study

    Introduction Defiant’s FROG 4000, a portable GCPID system, was used to identify and determine the concentration of chlorinated alkenes in several extraction wells located in Tacoma Washington. Split samples were taken at each well and sent to an offsite lab for analysis. This case study examines the field exercise and highlights the high degree of agreement between the offsite lab and ...


    By Northern ANI Solutions Ltd.

  • TDLAS Gas Detection Instrumentation

    PKL Technologies Inc. manufactures tunable diode laser (TDLAS) based gas detectors and monitors. Spectra-1 open path gas sensors are used in a variety of environmental and safety remote sensing applications. Spectra-1 gas sensors have been designed in a compact, easy to use, robust and portable format. Spectra-1 has been developed using proprietary hardware and software, to produce a low cost ...


    By PKL Technologies Inc.

  • Stability and accuracy of CIRAS-2 Water Vapor (reference humidity): control option 1

    Summary Rapid large-scale fluctuations of carbon dioxide and water vapor, although unnatural and artificial in the plant world, are desirable attributes for gas exchange systems from a sampling efficiency standpoint. As PP Systems’ benchmark IRGA system for gas exchange and photosynthesis research, CIRAS-2 was designed for and expected to have exceptional response times to ...


    By PP Systems

  • TopAir’s Horizontal Cabinet

    TopAir is the flagship brand of Statitech Ltd., a leading designer, manufacturer and marketer of several complete lines of laboratory equipment since 1999. The term horizontal cabinet can refer to two types of TopAir’s premium selection of cleanroom furniture and accessories. One type of horizontal cabinet is a work bench backed by a filter wall. Ambient air is cleaned through this wall ...


    By TopAir Systems

  • Canopy gas exchange measurements of cotton in an open system

    A portable, open transparent chamber system for measuring canopy gas exchanges was developed and tested. Differentials between incoming and outgoing atmospheric H2O and CO2 concentrations were used to calculate canopy transpiration (E) and net assimilation (A) at 10-s intervals using solenoid valve actuated sample lines connected to an infrared gas analyzer. A programmable data logger controlled ...

  • TopAir’s Weighing Station

    TopAir is the flagship brand of Statitech Ltd., an ISO 9002 certified manufacturer of cleanroom products for the electronic, semi-conductor, biomedical and defense industries. Established in 1999 and ISO-9002 certified, Statitech Ltd. specializes in the development, production and marketing of a wide variety of standard and custom-made cleanroom products including a weighing station, and has ...


    By TopAir Systems

  • Advanced gas analysis - on the go

    The field of ambient air analysis - monitoring industrial and other environments for harmful concentrations of gases - has traditionally faced a technology limitations: Would you prefer a complete and reliable tool, which will be bulky, complicated and inconvenient? Or would you like a nice portable one that's simple and lightweight, but unreliable and limited in its capability? Truly complete ...


    By HHCS Handheld USA Inc.

  • Case study - G210 verifies piped medical gases

    Report in the Medical Gas Association newsletter Consultation with medical gas quality controllers (QCs) to optimise specification has lead to, "A major improvement in portable instrumentation for the analysis of medical gases," according to Ed Doyle QC (MGPS). He reported in the August 2010 issue of the Medical Gas Association (www.mga.org.uk) newsletter on his experience with the new ...


    By Geotech

  • EPA studies identify techniques for critical leak testing prior to soil-vapor sampling

    Researchers at EPA’s National Risk Management Research Laboratory (NRMRL) in Ada, OK, are developing quality assurance (QA) measures for soil-gas and sub-slab sampling methods that help differentiate contaminant vapors due to vapor intrusion from background sources. Recent research focused on measures to identify leakage of ambient air into conventional vapor probes, which can significantly ...

  • Cerex introduces the new AirSentry FTIR Open Path Analyzer

    Cerex Monitoring Solutions is pleased to announce the release of the third generation model AirSentry FTIR multi-gas open path FTIR analyzer. The decision was made to fully redesign the analyzer to take full advantage of advances in hardware and software technology. The third generation design represents a full reconfiguration of the instrument. Goals were to reduce initial and operating costs ...

  • FTIR gas analyzers support management of fire at UK waste facility

    The capability to convene a multi-agency Air Quality Cell (AQC) was established in England in 2009 following the Buncefield Oil Storage Depot incident. A review of this event identified the need to rapidly co-ordinate the acquisition, analysis and interpretation of air quality data in major incidents.  Arrangements have been made in England to bring together experts from the Environment ...


    By Gasmet Technologies Oy

  • Real-World Vehicle Emissions: A Summary of the Seventeenth Coordinating Research Council On-Road Vehicle Emissions Workshop

    The Coordinating Research Council, Inc. (CRC) held its 17th On-Road Vehicle Emissions Workshop in March 2007, where results of the most recent on-road vehicle emissions research were presented. We summarize ongoing work from researchers who are engaged in improving our understanding of the role and contribution of mobile sources to ambient air quality and emission inventories. Participants in the ...

  • Detecting Gases: What You Can`t Smell Can Hurt You

    Walking through a drill-site area, a worker smells rotten eggs and stops tor a minute or two to assess where a gas leak might exist. Rubbing his itchv eves as he investigates further, he notices that he no longer smells the tell¬tale hydrogen sulphide odour. He does not realize that the gas has deadened his olfactory senses and unless he leaves the area within seconds, he could lose ...

  • Improved HF monitoring in Primary Aluminium Smelters with Laser Gas Detectors

    Primary aluminium smelting generates large amounts of hydrogen fluoride gas (HF). Concerns for worker safety and ambient air quality require that HF be monitored at several locations in smelters. Historically, a variety of methods have been used for HF monitoring. Cassette samplers and wet chemistry techniques, coupled with complex and expensive ...


    By Boreal Laser Inc.

  • How Accurate is Your Monitor?

    When you consider the many regulations and guidelines that health and safety officers and first responders are faced with, it is amazing they maintain the ability to detect such a wide variety of hazardous pollutants and toxic agents.  There is no lack of regulations governing how to monitor chemical compounds, and the list grows longer all the time.  New standards for portable gas ...

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