| 发明名称 |
METHOD AND AGENT FOR THE COLORIMETRIC DETERMINATION OF NITRATE IONS |
| 摘要 |
The invention relates to a procedure and agent for the colorimetric determination of nitrate ions in aqueous solutions by mixing the sample which is to be investigated with resorcinol and a mixture of sulfuric acid and phosphoric acid, characterized in that at least 2 g/l, preferably about 10 to 30 g/l chloride ions are also added. |
| 申请公布号 |
EP0445621(A3) |
申请公布日期 |
1992.01.22 |
| 申请号 |
EP19910102751 |
申请日期 |
1991.02.25 |
| 申请人 |
MERCK PATENT GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG |
发明人 |
BITSCH, ROLAND |
| 分类号 |
G01N31/00;G01N21/29;G01N21/78;G01N31/22;(IPC1-7):G01N21/77 |
主分类号 |
G01N31/00 |
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