dc.creatorShannon, Mark A.
dc.creatorMao, Xianglei L
dc.creatorFernández, Alberto
dc.creatorChan, Wing·Tat
dc.creatorRusso, Richard E.
dc.date2013-07-17T21:51:52Z
dc.date2013-07-17T21:51:52Z
dc.date1995
dc.date.accessioned2022-10-28T00:54:13Z
dc.date.available2022-10-28T00:54:13Z
dc.identifier0003-2700
dc.identifierhttp://hdl.handle.net/10872/3926
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4938279
dc.descriptionFor laser ablation solid sampling, the quantity of material ablated (removed) influences the sensitivi1y of chemical analysis. The mass removal rate depends strongly on the laser power density, which is the main controDable parameter for a given material and wavelength parameter using laser solid samplingfor inductively coupled plasma atomic emission spectroscopy (ICP-AES). For a wide variety of materials, a decrease in the rate of change, or roll-off, in mass removed is observed with increasing incident laser power density. The roll-off results from a change in the efticiency of material removed by the laser beam, primarily due to shielding of the target from the incident laser energy by a laser-vapor plume interaction. Several analytical technologies were employed to studythe quantity of mass removed versus laser power density. Data for mass ablation behavior versus laser power density are reported using ICP-AES, atomic emission from a Iaser-induced plasma near the sample surface, acoustic stress power in the target, and measurements of crater volumes •. This research demonstrates that the change in ICP-AES intensity with laser power density is dueto changes in the mass removal. The roll-off in mass ablation is not due to a change in particle size distn"bution of the ablated species, fractionation of the sample, or a change in transport efticiency to the ICP torch. Accurate tracking of the ICP-AES with the laser ablation process justifies the use of internal and external standardization.
dc.languageen_US
dc.publisherReprinted from Analytical Chemistry
dc.relation;67
dc.subjectLaser Ablation
dc.subjectMass Removal
dc.subjectPower Density
dc.subjectduring Solid Sampling
dc.subjectPlasma
dc.titleLaser Ablation Mass Removal versus lncident Power Density during Solid Sampling for lnductively Coupled Plasma Atomic Emission Spectroscopy
dc.typeArticle


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