| 摘要 |
PROBLEM TO BE SOLVED: To easily determine the total quantity of iron contained in sample water. SOLUTION: This quantitative determination method for iron, contained in sample water, comprises a process for adding dithionite and a masking agent for copper to the sample water, and a process for adding a color developing agent to the sample water with the dithionite and the masking agent on copper added thereto, to determine the quantity of iron in the sample water by an absorption photometry. The masking agent on copper, used here, is one selected from among, for example, a group comprising sodium thiosulfate, thiourea, and imidazole. COPYRIGHT: (C)2008,JPO&INPIT
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