ASTM D3271-87(2012)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D3271 − 87 (Reapproved 2012)
Standard Practice for
Direct Injection of Solvent-Reducible Paints Into a Gas
Chromatograph for Solvent Analysis
This standard is issued under the fixed designation D3271; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Significance and Use
4.1 Gas chromatographic separation of solvents present in
1.1 This practice describes the techniques used to inject
whole paints is the preferred first step for identifying and
whole paint samples directly into a gas chromatograph to
quantitating solvent compositions, using auxiliary procedures
obtain a chromatogram from which the solvent composition
2,3
and techniques.
may be established.
1.2 This practice is not designed to be quantitative.
5. Apparatus
1.3 The values stated in SI units are to be regarded as
5.1 Gas Chromatograph—Any instrument with temperature
standard. No other units of measurement are included in this programming capability may be used. It should be equipped
standard.
with either a thermal conductivity or flame ionization detector
(see Practice E260).
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.2 Recorder—A 1 to 10-mV recorder with a full-scale
responsibility of the user of this standard to establish appro-
response time of2sor less and a maximum noise of 60.03 %
priate safety and health practices and determine the applica-
of full scale.
bility of regulatory limitations prior to use. A specific hazard
5.3 Column—The resolution of the column must be such
statement is given in 6.1.
that under the operating conditions selected the distance from
the base line to the depression between two adjacent peaks
2. Referenced Documents
must be not more than 50 % of the smaller peak. Columns may
2.1 ASTM Standards: be either packed or capillary.
E260 Practice for Packed Column Gas Chromatography
6. Reagents and Materials
6.1 Carrier Gas—Helium or hydrogen for use with thermal
3. Summary of Practice
conductivity detector units; and nitrogen, helium or argon for
3.1 Asuitablealiquotofwholepaintisinjected,bymeansof
use with flame ionization detector units.
a syringe, into a gas chromatographic column in order to
6.1.1 Warning:When hydrogen is used, special precautions
separate the solvents.
should be taken to prevent gas leakage from causing a possible
explosion.
6.2 Column Packing Material, meeting requirements in 5.3.
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
The following materials have been used satisfactorily:
Related Coatings, Materials, and Applications and is the direct responsibility of
6.2.1 Polyethylene glycol, molecular weight 20 000, and
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
CurrenteditionapprovedJune1,2012.PublishedJuly2012.Originallyapproved
diisodecylphthalateasliquidphasesonasolidsupportof60to
in 1973. Last previous edition approved in 2006 as D3271 – 87 (2006). DOI:
80 mesh (250 to 175 µm) diatomaceous earth.
10.1520/D3271-87R12.
6.2.2 Porous beads of ethylvinylbenzene and divinylben-
New York Society for Paint Technolog
...