NITROGEN QUANTIFYING METHOD AND NITROGEN QUANTIFYING DEVICE

摘要

To provide a novel nitrogen quantifying method and a nitrogen quantifying device, capable of measuring nitrogen-containing concentration with high sensitivity.SOLUTION: Disclosed is a nitrogen quantifying method which includes: gasification step of generating nitrite ions contained in a primary sample as nitrite gas by mixing the primary sample with an acidic aqueous solution; an absorption step of preparing a secondary sample in which nitrite ion concentration is more increased than that in the primary sample by absorbing the generated nitrous acid gas in an alkaline aqueous solution; and a quantifying step of measuring nitrite ion concentration in a secondary sample.SELECTED DRAWING: Figure 1