Chay, Siew Leng (2006) Spectrophotometric determination of phosphate in water. Universiti Malaysia Sabah. (Unpublished)
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Abstract
Spectrophotometric analysis of phosphate according to ascorbic acid method has been studied. Absorbance measurement of phosphate was carried out at λ= 880 nm using UV-VIS spectrophotometer. For low phosphate concentrations (<1 µg/mL), a maximum absorbance value was obtained within 10 minutes after mixing of reagent while at higher concentrations, a maximum was not attained within 60 minutes. The relationship between absorbance and concentration was in accordance to the Beer-Lambert law for the phosphate concentration range 0-1 µg/mL while higher concentrations resulted a negative deviation from the Beer's law. The presence of chloride, nitrate, sulphate, nitrite, Ca²� and Mg²� ions in solution did not interfere in the phosphate analysis. By contrast, the presence of arsenate, silicate and Cr�� ions interfered, particularly at higher concentrations
| Item Type: | Academic Exercise |
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| Keyword: | Spectrophotometric, phosphate, ascorbic acid method, UV-VIS spectrophotometer, absorbance, Beer's law |
| Subjects: | T Technology > TP Chemical technology |
| Department: | SCHOOL > School of Science and Technology |
| Depositing User: | ADMIN ADMIN |
| Date Deposited: | 06 Feb 2015 09:24 |
| Last Modified: | 24 Oct 2017 14:09 |
| URI: | https://eprints.ums.edu.my/id/eprint/10464 |
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