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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|
|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|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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