Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/98171
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dc.contributor.authorWall, M.en
dc.contributor.authorSun, Z.en
dc.contributor.authorAlwahabi, Z.en
dc.date.issued2016en
dc.identifier.citationOptics Express, 2016; 24(2):1507-1517en
dc.identifier.issn1094-4087en
dc.identifier.issn1094-4087en
dc.identifier.urihttp://hdl.handle.net/2440/98171-
dc.description.abstractThe enhancement of laser-induced breakdown spectroscopy (LIBS) assisted with microwave radiation is demonstrated for an aqueous solution of indium using the 451.13 nm emission line. Microwave power was delivered via a near-field applicator to the LIBS measurement volume where the indium aqueous solution was presented as a liquid jet. The microwave enhancement effect was observed to decrease with increasing laser pulse fluence at 532 nm resulting in a maximum emission intensity occurring at a laser pulse fluence of 85.2 J∙cm<sup>-2</sup>, independent of the microwave power used. The detection limits of indium in an aqueous solution were determined to be 10.8 ± 0.7 and 124 ± 5 ppm for the cases of microwave enhanced and standard LIBS, respectively. The 11.5-fold detection limit enhancement obtained in the liquid phase is of the same order of magnitude as that reported for other elements in solid samples, but lower than that obtained in solid phase utilizing a similar experimental setup. This establishes microwave enhancement as an effective technique for the detection of metals in aqueous solutions. In addition, the temporal evolution of plasma emission intensity was investigated and was found to be qualitatively similar to that of plasma produced from solid phase samples, which reveals the same coupling mechanism between laser generated plasma and microwave radiation.en
dc.description.statementofresponsibilityMatthew Wall, Zhiwei Sun, and Zeyad T. Alwahabien
dc.language.isoenen
dc.publisherOptical Society of Americaen
dc.rights© 2016 Optical Society of America. Open Access - CC BY license.en
dc.titleQuantitative detection of metallic traces in water-based liquids by microwave-assisted laser-induced breakdown spectroscopyen
dc.typeJournal articleen
dc.identifier.rmid0030044919en
dc.identifier.doi10.1364/OE.24.001507en
dc.identifier.pubid238267-
pubs.library.collectionMechanical Engineering publicationsen
pubs.library.teamDS01en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
dc.identifier.orcidSun, Z. [0000-0001-7899-9676]en
dc.identifier.orcidAlwahabi, Z. [0000-0003-4831-7798]en
Appears in Collections:Mechanical Engineering publications

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