Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/55739
Title: Direct ultrasonic agitation for rapid extraction of organic matter from airborne participate
Authors: Lee, SC 
Zou, SC
Ho, KF
Chan, LY
Issue Date: 2001
Publisher: Springer
Source: Fresenius' journal of analytical chemistry, 2001, v. 369 , no. 2, p. 166-169 How to cite?
Journal: Fresenius' journal of analytical chemistry 
Abstract: Direct ultrasonic extraction (DUE) is proposed as simple and rapid sample pretreatment method. This new approach is applied to the extraction of particulate organic matter (POM) from airborne particulate by using dichloro-methane (DCM) or DCM/methanol (90/10, v/v) as extradant. The analytical determination was carried out by weighing the extractable POM on an electrobalance. Total recovery for POM could be obtained when the sample was extracted three times with 25-50 mL extradant each for about 5 min at 50 W ultrasonic power. In comparison with conventional Soxhlet extraction, less extraction time (total 15 min only) and solvent consumption(100 mL) were required by DUE. The efficiency of the DUE was similar or even higher than the routine Soxhlet method. Additionally, the new extractor is very simple and easy to use and can accelerate the extraction procedures of organic components from various solid samples.
URI: http://hdl.handle.net/10397/55739
ISSN: 0937-0633 (print)
1432-1130 (online)
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