|Analyze Organic Compounds Found in Water with a New ASTM Guide
ASTM International has issued standard guidance for analyzing
volatile and semivolatile organic compounds in water with modern
instrumentation and data acquisition systems.
D 4128, Standard Guide for Identification and Quantitation of Organic
Compounds in Water by Combined Gas Chromatography and Electron
Impact Mass Spectrometry (GC-MS), applies to organic constituents
of natural and treated waters. It covers all modes of sample introduction
such as injection of organic extracts, direct aqueous injection,
and purge and trap techniques.
It is often necessary to identify the specific organic compounds
that may be present in water samples and to determine the concentration,
says chief author John Sebroski, HES chemist III, Environmental
Testing Services, Bayer Corporation, New Martinsville, W. Va.
The standard applies to solutions of 1 ng or more whose components
can be introduced to a gas chromatographic column, either packed
Approximately 10 members of the water industry developed the guide
as a task group of Committee D19 on Water. They included representatives of contract laboratories,
instrument vendors, the U.S. Environmental Protection Agency,
chemists, and consultants.
The task group created the guide from ASTM Standard Practice for
Identification and Quantitation of Organic Compounds in Water
by Combined Gas Chromatography and Electron Impact Mass Spectrometry,
which they revised to include modern GC-MS and data acquisition
systems, and information on quantitation of organic compounds,
says Sebroski, the task group chairman.
While the entire document was revised and updated to reflect
modern instrumentation and data acquisition systems, a new section
on Guidelines for Quantitation was added to the guide to determine
the concentration of target compounds or to estimate the concentration
of tentatively identified compounds, he says. The guide is available
electronically on the ASTM Web site and will be published in the
Annual Book of Standards, Volume 11.02.
For further technical information, contact John Sebroski, Environmental Testing Services, Bayer Corporation (phone: 304/451-2227).
Committee D19 meets Jan. 19-23 in Cocoa Beach, Fla. For meeting
or membership details, contact Bruce Noe, manager, ASTM Technical Committees (610/832-9719). //
Copyright 2002, ASTM