You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    STP1075

    The Automated Determination of Volatile Organic Contaminants in Ambient Air and/or Soil Gas by Gas Chromatography with Selective Detectors

    Published: 0


      Format Pages Price  
    PDF (288K) 17 $25   ADD TO CART
    Complete Source PDF (5.6M) 414 $67   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Abstract

    Volatile Organic Contaminants (VOCs) are major air pollutants in our environment. Whole air sampling has become the primary method for sampling air with EPA method TO-14. With this technique, an air sample is drawn through a cryogenically cooled trap to freeze out and concentrate VOC contaminants. The trap is then quickly heated and the VOCs are transferred to a cryogenically cooled column. Several variations and improvements have been studied: 1) automation for multiple samples, 2) use of a variable temperature absorption trap to eliminate cryogenics and a water removal device, and 3) elimination of the requirement for a cryogenically cooled oven. Two automated analytical systems are discussed: a fixed and a variable volume system. Precision, method detection limits, system linearity, and carryover are reported. Finally, ambient, dry-cleaner, and indoor air samples are analyzed using the techniques described.

    Keywords:

    Ambient Air, Soil Gas, VOCs, Canister, Air Contaminants


    Author Information:

    Kirshen, N
    Senior Chemist, and Chemist, Varian Chromatography Systems, Walnut Creek, California

    Almasi, E
    Senior Chemist, and Chemist, Varian Chromatography Systems, Walnut Creek, California


    Committee/Subcommittee: D18.14

    DOI: 10.1520/STP25467S