TITLE
An Evaluation of the SemiVOST Method for Halogenated Compounds at
a Chemical Manufacturing Facility


AUTHOR(S)
Merrill Jackson, Joan Bursey, James McGaughey, Raymond Merrill

PERFORMING ORGANIZATION NAME AND ADDRESS
Radian Corporation
Box 13000
Research Triangle Park, NC 27709

SPONSORING AGENCY NAME AND ADDRESS
National Exposure Research Laboratory
Office of Research and Development
U.S. Environmental Protection Agency
Research Triangle Park, NC 27711

ABSTRACT
A field test was conducted to determine the applicability of the
SemiVOST method (SW846 Method 0010 (Sampling), SW846 Draft
Method 3542 (Sample Preparation), and SW846 Method 8270
(Analysis)) 
to semivolatile halogenated organic compounds listed it Title III
of the 1990 Clean Air Act Amendments.  Laboratory tests and two
field tests had resulted in the development and evaluation of
liquid dynamic spiking apparatus with procedures to demonstrate the
field performance of halogenated analytes.  Draft Method 3542
(Sample Preparation) was developed as a result of the poor
recoveries experienced in the second field evaluation test.  This
third field test evaluates the performance of the SemiVOST
methodology at a stationary source with high moisture and complex
organic stack emissions.  The new guidance (Draft Method 3542) for
sample preparation and recovery of the semivolatile organic
compounds from the components of the Method 0010 sampling train was
also evaluated. Quadruple SemiVOST trains were operated, with two
spiked trains and two unspiked trains.  Analytical results showed
acceptable recovery and precision for 25 of 28 analytes.