Photothermal detection of trace compounds in water, using the deflection of a water meniscus

Hodgkinson, Jane; Johnson, Mark; Dakin, John P.

dc.contributor.author	Hodgkinson, Jane	-
dc.contributor.author	Johnson, Mark	-
dc.contributor.author	Dakin, John P.	-
dc.date.accessioned	2012-12-10T23:01:03Z
dc.date.available	2012-12-10T23:01:03Z
dc.date.issued	1998-01-01T00:00:00Z	-
dc.identifier.citation	Jane Hodgkinson, Mark Johnson and John P. Dakin. Photothermal detection of trace compounds in water, using the deflection of a water meniscus. Measurement Science and Technology, 1998, Vol. 9 (8), pp 1316-1323	-
dc.identifier.issn	0957-0233	-
dc.identifier.uri	http://dx.doi.org/http://dx.doi.org./10.1088/0957-0233/9/8/026	-
dc.identifier.uri	http://dspace.lib.cranfield.ac.uk/handle/1826/4301
dc.description.abstract	Anovelphotothermaldetectorisdescribed,basedonaclosedcellsuitableforusewithlow-frequencymodulatedcontinuous-wavelightsources.Photothermalexpansioninaqueoussamplescausedthedeflectionofawatermeniscusheldacrossa200m-radiuspinhole.Displacementofthewatermeniscuswasmeasuredusingfibreopticinterferometry.Amercurydischargelamp(254nm)andalaserdiode(678nm)wereusedtodetecttoabsorptionby2ppbanthraceneand0.5ppmpotassiumpermanganateinaqueoussolution,respectively.Thetechniquewasusedtodetectdifferencesbetweenabsorptioncoefficientsinaqueoussolutionsdowntoapproximately20%ofthebackgroundabsorptionofthewateritself.	en_UK
dc.publisher	Iop Publishing Ltd	en_UK
dc.title	Photothermal detection of trace compounds in water, using the deflection of a water meniscus	en_UK
dc.type	Article	-