Applicability of Direct Extraction of Solid Phase Micro-Extraction to the Determination of 54 Volatile Organic Compounds in Drinking Water

  • Shiau-Chian Soh


The applicability of direct extraction of solid phase microextraction (SPME) to volatile organic compounds (VOCs) determination in drinking water samples was demonstrated by validating the method and confirmed the technique’s capabilities consistent with what the application requires. Recovery of each VOC was well above 80%, which was in the range of 81 - 109% with mean recovery 85% for three different spiked concentrations (10, 50 and 100 µg/l) while the RSD were below 13%. The method detection limit is in the range of 0.005 to 1.0 µg/l. Upon consideration of the complete procedure from sample preparation to instrumental determination, the expanded uncertainty for all VOCs under study is in the range of 1.06 to 2.95 µg/l. SPME has proven to be a very powerful analytical tool that offers fast, sensitive, inexpensive, portable and solvent-free technique for extracting VOCs from aqueous samples, which can be used on a routine basis.