ELECTRO-ENHANCED SOLID-PHASE MICROEXTRACTION METHOD
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United States of America Patent
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Issued Date -
Mar 12, 2015
app pub date -
Sep 11, 2013
filing date -
Sep 11, 2013
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Abstract
The electro-enhanced solid-phase microextraction (EE-SPME) method involves extraction that is performed with an SPME fiber, preferably made of polydimethylsiloxane (PDMS), in the presence of an applied electric potential for a predetermined period of time. Polar analytes are extracted onto the fiber, which is the stationary phase. The solid-phase microextraction fiber is then inserted into an injection port of a gas chromatograph coupled with a mass spectrometer. The polar analytes are desorbed in the injection port, and are analyzed by GC-MS to detect and quantify the individual components. The method is particularly useful for the detection of trace amounts of plasticizers, such as phthalate esters and bisphenol A, that are known to disrupt the endocrine system of humans and animals above known levels
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