发明申请
- 专利标题: Optical determination of anionic charge in a process stream
- 专利标题(中): 光学测定工艺流中的阴离子电荷
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申请号: US15038483申请日: 2014-11-18
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公开(公告)号: US20160305890A1公开(公告)日: 2016-10-20
- 发明人: Lari Vähäsalo , Iiris Joensuu , Marjatta Piironen
- 申请人: KEMIRA OYJ
- 申请人地址: FI Helsinki
- 专利权人: KEMIRA OYJ
- 当前专利权人: KEMIRA OYJ
- 当前专利权人地址: FI Helsinki
- 优先权: FI20136173 20131118
- 国际申请: PCT/FI2014/050870 WO 20141118
- 主分类号: G01N21/85
- IPC分类号: G01N21/85 ; G01N33/18 ; G01N21/31 ; G01N15/06 ; G01N21/78 ; B03B7/00 ; G01N33/34 ; G01N21/82 ; G01N31/22 ; C09B67/32 ; D21H23/08 ; G01N21/59 ; G01N21/27
摘要:
The present invention concerns a method of optical measurement of an aqueous stream, and of processing the results of the measurement in order to determine the anionic charge of the stream, the method being carried out by measuring the light absorption of the stream and predicting the amount of anionic groups in the stream using a mathematical processing, such as mathematical calculations. Particularly, the method includes the steps of adding an amount of a cationic dye to the aqueous stream, measuring the light absorption spectra of the obtained dye-containing stream, and processing the obtained light absorption spectrum using said mathematical processing in order to obtain the anionic charge. The invention also concerns the use of the obtained spectrum in determining the turbidity of the stream, as well as a device suitable for use in carrying out the method.
公开/授权文献
- US09989476B2 Optical determination of anionic charge in a process stream 公开/授权日:2018-06-05