发明名称 |
METHOD OF DETERMINING THE AMOUNT OF AN ANIONIC MATERIAL |
摘要 |
The quantity of an anionic material in a sample is determined by adjusting the pH of the sample to place the material in nonionic extractable form, extracting out the material, spectrophotometrically measuring the extracted material, and comparing the measured value to a standard in order to determine the quantity of the anionic material. |
申请公布号 |
EP0182102(B1) |
申请公布日期 |
1991.09.25 |
申请号 |
EP19850113176 |
申请日期 |
1985.10.17 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MAGNUSON, ROY HARVEY;SCHUBERT, STEVEN ASHLEY |
分类号 |
G01N30/00;C23C18/16;G01N31/00 |
主分类号 |
G01N30/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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