Otsuka, Yu and Nakatani, Nobutake and Takahashi, Takuya and Kozaki, Daisuke and Mori, Masanobu and Tanaka, Kazuhiko (2016) The simultaneous determination of silicic, boric and carbonic acids in natural water via ion-exclusion chromatography with a charged aerosol detector. Separations, 3 (1). pp. 1-10. ISSN 2297-8739. (Published)
|
Pdf (Open access)
The simultaneous determination of silicic, boric and carbonic.pdf Available under License Creative Commons Attribution. Download (1MB) | Preview |
Abstract
The simple and simultaneous determination of silicic, boric and carbonic acids was made using ion-exclusion chromatography (IEC) and a Corona™ charged aerosol detector (C-CAD). Silicic and boric acids were separated by the column packed with a weakly acidic cation-exchange resin in H+-form and ultra-pure water eluent, and the detector responses were improved by the addition of acetonitrile to eluent. Under the optimized conditions, the simultaneous determination of weak inorganic acids, except for carbonic acid, was successfully performed. When the conversion column packed with a strong acidic cation-exchange resin in Na+- or K+-form was inserted between the separation column and the detector, weak inorganic acids including carbonic acid could be detected by the C-CAD. The calibration curves were linear in the range of 0.5–10 mg·L−1 as Si for silicic acid (r2 = 0.996), 10–100 mg·L−1 as B for boric acid (r2 = 0.998) and 1.3–21 mg·L−1 as C for carbonic acid (r2 = 0.993). The detection limits based on three times the standard deviation were 0.03 mg·L−1 as Si for silicic acid, 0.40 mg·L−1 as B for boric acid and 0.08 mg·L−1 as C for carbonic acid. This method was applicable to river, hot spring and drinking water.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Ion-exclusion chromatography (IEC); Corona™ charged aerosol detector (C-CAD); Silicic acid; boric acid; Carbonic acid; Conversion column |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 12 Nov 2020 06:46 |
| Last Modified: | 12 Nov 2020 06:46 |
| URI: | http://umpir.ump.edu.my/id/eprint/29878 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |