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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Gao, Yuanyuan Zhou, Qingxiang |
| Copyright Year | 2014 |
| Abstract | The present study describes a simple and sensitive method for the determination of polycyclic aromatic hydrocarbons (PAHs) in water samples by temperature-controlled ionic liquid dispersive liquid–liquid microextraction prior to high performance liquid chromatography with an ultraviolet detector. Three ionic liquids including 1-hexyl-3-methylimidazolium hexafluorophosphate [C6MIM][PF6], 1-benzyl-3-methylimidazolium hexafluorophosphate [C7MIM][PF6] and 1-octyl-3-methylimidazolium hexafluorophosphate [C8MIM][PF6] were investigated for enrichment, and the experimental results indicated that the best extraction efficiencies were achieved when [C8MIM][PF6] was used as the extraction solvent. Other factors affecting the extraction efficiency such as the volume of ionic liquid, heating temperature, extraction time, addition of 2-propanol, centrifugation time and ionic strength were also optimized. Under the optimal conditions, the detection limits of PAHs were in the range of 0.0005–0.88 μg L−1. The intra-day and inter-day precisions of the proposed method (RSDs, n = 6) were in the range of 2.7–7.4% and 5.5–11.4%, respectively. The proposed method was applied to the analysis of real environmental water samples and good spiked recoveries in the range of 83.5–118% were achieved. All these results indicate that the proposed method is a viable alternative to existing methods and would be very useful in the future. |
| Starting Page | 2553 |
| Ending Page | 2559 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 17599660 |
| Volume Number | 6 |
| Issue Number | 8 |
| Journal | Analytical Methods |
| DOI | 10.1039/c3ay42254b |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Hexafluorophosphate Isopropyl alcohol Ionic strength Polycyclic aromatic hydrocarbon Centrifugation High-performance liquid chromatography Ultraviolet Benzyl group Solvent Ionic liquid |
| Content Type | Text |
| Resource Type | Article |
| Subject | Analytical Chemistry Engineering Chemical Engineering |
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