Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume
40, Number 4, April, pp. 191-197
Characterization of Paint Samples Used in Drinking Water Reservoirs:
Identification of Endocrine Disruptor Compounds
J. Romero[1], F. Ventura[1],
and M. Gomez[2]
[1]AGBAR, Aigües de Barcelona, Pg. Sant Joan 39, 08009–Barcelona, Spain
and [2]AQUAGEST, Aquagest-Santiago, Rúa Secundino López 1, 15702–Santiago
de Compostela, Spain
Several migration tests are performed from various epoxy paint
samples that, according to the regulation, can be used in food reservoirs such
as drinking water reservoirs. The level of the organic compounds capable of
producing migrations to water with special attention to endocrine disruptor
compounds (EDCs) are identified and estimated by closed loop-stripping analysis
(CLSA) and liquid–liquid extraction (LLE) methods coupled with gas chromatography
(GC)–mass spectrometry (MS). Bisphenol A, a strong endocrine disruptor,
is found in all migration experiments. Its concentration level reaches between
0.02 and 0.03 mg/cm2. The higher concentration corresponds with benzylic alcohol,
which is used as a solvent and curing agent in epoxy paint. Other EDCs identified
in the migration tests are phthalates, 4-nonylphenol, and t-butylphenol. The
main non-EDCs identified are solvents, antioxidants, and rubber-like compounds.
No great differences are found in the use of metallic plates or concrete slabs
for migration experiments; only additional compounds related with the pretreatment
of the concrete wall have been identified, too. In the study of a drinking water
sample the same organic compounds identified in the migration test is not seen.
This is probably because of the dynamic situation in a drinking water reservoir.
Finally, a GC profile of a direct epoxy paint analysis is shown. The main peak
identified is bisphenol A diglycidyl ether, monomer, and an active principle
of the polymerization of epoxy resins based on bisphenol A. In addition, we
report the recoveries of a selected group of EDCs using CLSA and LLE methods
coupled with GC–MS.
Reproduction
of editorial content of this journal is prohibited without publisher’s
permission.
This
article is available in its entirety by fax for $4.00 per
page.
Visa or MasterCard accepted.
To
order electronicallyclick here or call: 847-647-2900 ext. 1323 or fax request to: 847-647-1155.
Please
indicate JCS volume and issue along with
page numbers.
