Method of Determining Metal by Colorimetry and Determination Reagent
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United States of America Patent
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Issued Date -
Jan 15, 2009
app pub date -
Feb 22, 2007
filing date -
Feb 23, 2006
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Abandoned
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Abstract
The present invention is a method for calorimetrically determining a metal in a sample using a chelating coloring agent, characterized by coexistence of a masking agent for iron, copper or nickel. Also, the present invention is a reagent for calorimetrically determining a metal in a sample using a chelating coloring agent, characterized by inclusion of a masking agent for iron, copper and/or nickel. Further, the present invention is a masking agent for iron, copper and/or nickel and a method for reducing positive errors due to iron, copper or nickel contained in a sample.
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