| Title: | Determination of volatile organic compounds in water using ultrasound-assisted emulsification microextraction followed by gas chromatography |
| Address: | "Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan" |
| ISSN/ISBN: | 1615-9314 (Electronic) 1615-9306 (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) are toxic compounds in the air, water and land. In the proposed method, ultrasound-assisted emulsification microextraction (USAEME) combined with gas chromatography-mass spectrometry (GC-MS) has been developed for the extraction and determination of eight VOCs in water samples. The influence of each experimental parameter of this method (the type of extraction solvent, volume of extraction solvent, salt addition, sonication time and extraction temperature) was optimized. The procedure for USAEME was as follows: 15 muL of 1-bromooctane was used as the extraction solvent; 10 mL sample solution in a centrifuge tube with a cover was then placed in an ultrasonic water bath for 3 min. After centrifugation, 2 muL of the settled 1-bromooctane extract was injected into the GC-MS for further analysis. The optimized results indicated that the linear range is 0.1-100.0 mug/L and the limits of detection (LODs) are 0.033-0.092 mug/L for the eight analytes. The relative standard deviations (RSD), enrichment factors (EFs) and relative recoveries (RR) of the method when used on lake water samples were 2.8-9.5, 96-284 and 83-110%. The performance of the proposed method was gauged by analyzing samples of tap water, lake water and river water samples" |
| Keywords: | "Chromatography, Gas/*methods Lakes/chemistry Liquid Phase Microextraction/instrumentation/*methods Ultrasonics Volatile Organic Compounds/*analysis/*isolation & purification Water Pollutants, Chemical/*analysis/*isolation & purification;" |
| Notes: | "MedlineLeong, Mei-I Huang, Shang-Da eng Evaluation Study Germany 2012/01/25 J Sep Sci. 2012 Mar; 35(5-6):688-94. doi: 10.1002/jssc.201100610. Epub 2012 Jan 24" |
