Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/33984
DC FieldValueLanguage
dc.contributor.authorYang, J.S.en_US
dc.contributor.author楊吉斯zh_TW
dc.contributor.authorChen, P.Y.en_US
dc.date2002zh_TW
dc.date.accessioned2014-06-06T07:46:59Z-
dc.date.available2014-06-06T07:46:59Z-
dc.identifier.issn0910-6340zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/33984-
dc.description.abstractAn infrared reflection-absorption (IR/RA) method was developed to detect aromatic organic compounds in aqueous solutions where the required sample volume can be as low as 50 muL. Two aluminum plates were used to form the sampling cell for the detection of small amount of aqueous samples. One plate was used as an IR reflection substrate and a second plate, in which several holes were drilled, was placed tightly on the top of the reflection plate to form cavities for sampling. The cavities were further coated with hydrophobic film. After the hydrophobic film dried, a certain amount of aqueous sample was injected to the cavity. Analytes in the aqueous solution were attracted into the hydrophobic film through the solid phase micro-extraction principle. After residual water was removed from the cavity, organic Compounds absorbed by the hydrophobic film could be sensed using IR radiation based on the reflection-absorption mode. To investigate the applicability of this type of sensing method for small-volume detection, factors such as the volume of the aqueous solution. the sample concentration. size of the cavity and the sensitivity of this method were investigated. An examination of the linear relationship between the signals and the analyte concentrations showed regression coefficients that were generally in the range of 0.992 to 0.999 for the examined analytes in the concentration range of 10 to 100 ppm. Under the condition that the sample volume was 100 muL and based on three-times the spectra noise level, the calculated detection limits for this method were found at around I ppm for the examined analytes.en_US
dc.language.isoen_USzh_TW
dc.relationAnalytical Sciencesen_US
dc.relation.ispartofseriesAnalytical Sciences, Volume 18, Issue 11, Page(s) 1247-1252.en_US
dc.relation.urihttp://dx.doi.org/10.2116/analsci.18.1247en_US
dc.subjectsolid-phase microextractionen_US
dc.subjecttunable diode-lasersen_US
dc.subjectwave-guide sampleren_US
dc.subjectir chemical sensoren_US
dc.subjectchlorinated hydrocarbonsen_US
dc.subjectorganic-compoundsen_US
dc.subjectspectroscopic methoden_US
dc.subjectmass-spectrometryen_US
dc.subjectfiberen_US
dc.subjectwateren_US
dc.titleInfrared reflection-absorption method for the detection of aromatic compounds in aqueous solutions with limited sample volumesen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.2116/analsci.18.1247zh_TW
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextnone-
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