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Automated Aluminum Analysis with the Aluminon Method
Author(s) -
Bertsch P. M.,
Alley M. M.,
Ellmore T. L.
Publication year - 1981
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1981.03615995004500030048x
Subject(s) - autoanalyzer , interfacing , absorbance , chemistry , ascorbic acid , correlation coefficient , calibration curve , standard deviation , analytical chemistry (journal) , standard addition , calibration , reagent , standard curve , chromatography , computer science , mathematics , detection limit , computer hardware , statistics , organic chemistry , food science
An automated method of aluminum analysis by the aluminon (ammonium salt of aurin tricarboxylic acid) procedure is described. The method employs ascorbic acid for removal of Fe(III) interference and eliminates, with proper sample pretreatment, the need for a protective colloid. The calibration curve has a correlation coefficient > 0.99 and a standard deviation around the regression line of ± 0.07 absorbance units up to 1.2‐ppm Al in solution. Standard autoanalyzer components are utilized in the system and computer interfacing is possible.