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Type: Artigo de periódico
Title: Slurry Analysis By Multichannel Arc/spark Emission Spectrometry Using A Monosegmented System: Determination Of Aluminum In Sediments
Author: Magalhaes C.E.C.
Pasquini C.
Arruda M.A.Z.
Abstract: This work proposes a new approach for sediment analysis in which the sample is introduced as a slurry in an arc/spark emission spectrometer using a monosegmented system. The spectrometer has been modified to employ a 1024 photodiode-array detector capable of collecting intensities in a 18.7 nm wide wavelength window. Sediment slurries were prepared with 8.5-50 mg of the samples, grounded to a particle size less than 38 μm, transferred to a 50 mL volumetric flask in which 1 mL of conc. HNO3 and 300 μL of 10% m/v La (as La2O3; used as internal standard) were added. The slurry (25 μL) was introduced into the monosegmented system and transported by an air stream to a graphite rod in the existing arc/spark source. About 40 samples can be analyzed per hour. Results for reference materials show acceptable accuracy and precision for the proposed method.
Editor: John Wiley & Sons Inc, New York, NY, United States
Rights: fechado
Identifier DOI: 10.1002/(SICI)1098-2728(2000)12:1<46::AID-LRA9>3.0.CO;2-J
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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