Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume 44,
Number 10, November/December 2006, pp.615-618
Extraction of Hydrocarbons from Seaweed Samples
Using Sonication and Microwave-Assisted Extraction: A Comparative
Study
M.O. Punín Crespo[1], D. Cam[2], S. Gagni[2],
N. Lombardi[2], and M.A. Lage Yusty[1]
[1]Department of Analytical Chemistry, Nutrition, and Bromatology,
Faculty of Pharmacy, University of Santiago de Compostela, 15782
Santiago de Compostela, Spain and
[2]Department of Chemistry, Montecatini Environmental Research
Centre, Marina di Ravenna, Italy
A sonication method is compared with a microwave-assisted
extraction method for recovering polycyclic aromatic hydrocarbons
and aliphatic hydrocarbons from seaweed and acid humic samples.
Different extracting solvents and adsorbents for the purification
step are tested. For the sonication extraction, 10 g of the sample
are extracted in an ultrasonic bath (60°C for 15 min with
20 mL of hexane). For the microwave-assisted extraction two steps
are carried out, each step at 90°C under pressure in closed
vessels with 20 mL of hexane for 10 min at 950 W. A clean-up step
is performed for both extraction techniques. The results indicate
that the recovery of hydrocarbons is dependent on both the extraction
technique and the type of matrix. The most suitable technique
appears to be sonication employing hexane as the extraction solvent.
The recoveries obtained for aliphatic hydrocarbons are higher
than those achieved for the polycyclic aromatic hydrocarbons,
with values ranging within 81–109% and 40–76%, respectively.
Reproduction
of editorial content of this journal is prohibited without publisher’s
permission.
This
article is available in its entirety by fax for $40.00.
Visa, MasterCard & Amex 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.
For permission to reuse material from Journal of Chromatographic Science, please access www.copyright.com or contact the Copyright Clearance Center, Inc. (CCC), 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400. CCC is a not-for-profit organization that provides licenses and registration for a variety of uses.
