| 发明名称 |
PROCEDURE AND AGENT FOR THE 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 |
US5236848(A) |
申请公布日期 |
1993.08.17 |
| 申请号 |
US19910665860 |
申请日期 |
1991.03.07 |
| 申请人 |
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG |
发明人 |
BITSCH, ROLAND |
| 分类号 |
G01N31/00;G01N21/29;G01N21/78;G01N31/22 |
主分类号 |
G01N31/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
