Spectrophotometric determination of trace quaternary phosphonium salts in water with m-nitrophenol
A novel method was established for spectrophotometric chromogenic reaction of m-nitrophenol with cationic surfactants to determine the trace quaternary phosphonium salts in water. The optimal analytic condition was obtained as follows: reaction time 10 min, sodium hydroxide 2.00 mL, m-nitrophenol 1....
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2010-07-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2010.04.018 |
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| Summary: | A novel method was established for spectrophotometric chromogenic reaction of m-nitrophenol with cationic surfactants to determine the trace quaternary phosphonium salts in water. The optimal analytic condition was obtained as follows: reaction time 10 min, sodium hydroxide 2.00 mL, m-nitrophenol 1.50 mL, extraction time 10 min, the absorption wavelength 432 nm. The linear range of calibration curve was between 4.00 and 36.00 mg·L<sup>-1</sup> with good correlation coefficient which was 0.9995, and the limit of detection was 0.57 mg·L<sup>-1</sup> at this optimal condition. All these show that this method is simple and accurate with good reproducibility, which is suitable for the determination of trace quaternary phosphonium salts in water. |
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| ISSN: | 1008-9209 2097-5155 |