TITLE
Field Validation of the DNPH Method for Aldehydes and Ketones

AUTHOR(S)
Gerald S. Workman, Jr. and Joette L. Steger

PERFORMING ORGANIZATION NAME AND ADDRESS
Radian Corporation
P.O. 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 stationary source emission test method for selected aldehydes and
ketones has been validated.  The method employs a sampling train
with impingers containing 2, 4dinitrophenylhydrazine (DNPH) to
derivatize the analytes.  The resulting hydrazones are recovered
and analyzed by high performance liquid chromatography.  Nine
analytes were studied: formaldehyde, acetaldehyde, propionaldehyde,
methyl ethyl ketone, methyl isobutyl ketone, acetophenone,
isophorone, and quinone.  The study employed the validation
techniques described in EPA method 301, which uses train spiking to
determine bias, and collocated sampling trains to determine
precision.  The studies were carried out at a plywood veneer dryer
and a polyester manufacturing plant.

On the basis of the Method 301 criteria for precision (±50%
relative standard deviation) and bias (correction factor of 1.00
±0.30) the method was validated for formaldehyde, acetaldehyde,
propionaldehyde, acetophenone and isophorone.  Acrolein, methyl
ethyl ketone, methyl isobutyl ketone, and quinone did not meet the
validation criteria.