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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zhang, Shengxiao Niu, Hongyun Cai, Yaqi Shi, Yali |
| Description | Country affiliation: China Author Affiliation: Zhang S ( State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China.) |
| Abstract | The hydrophobic octadecyl (C(18)) functionalized Fe(3)O(4) magnetic nanoparticles (Fe(3)O(4)@C(18)) were caged into hydrophilic barium alginate (Ba(2+)-ALG) polymers to obtain a novel type of solid-phase extraction (SPE) sorbents, and the sorbents were applied to the pre-concentration of polycyclic aromatic hydrocarbons (PAHs) and phthalate esters (PAEs) pollutants from environmental water samples. The hydrophilicity of the Ba(2+)-ALG cage enhances the dispersibility of sorbents in water samples, and the superparamagnetism of the Fe(3)O(4) core facilitates magnetic separation. With the magnetic SPE technique based on the Fe(3)O(4)@C(18)@Ba(2+)-ALG sorbents, it requires only 30 min to extract trace levels of analytes from 500 mL water samples. After the eluate is condensed to 0.5 mL, concentration factors for both phenanthrene and di-n-propyl-phthalate are over 500, while for other analytes are about 1000. The recoveries of target compounds are independent of salinity and solution pH under testing conditions. Under optimized conditions, the detection limits for phenanthrene, pyrene, benzo[a]anthracene, and benzo[a]pyrene are 5, 5, 3, and 2 ng L(-1), and for di-n-propyl-phthalate, di-n-butyl-phthalate, di-cyclohexyl-phthalate, and di-n-octyl-phthalate are 36, 59, 19, and 36 ng L(-1), respectively. The spiked recoveries of several real water samples for PAHs and PAEs are in the range of 72-108% with relative standard deviations varying from 1% to 9%, showing good accuracy of the method. The advantages of the new SPE method include high extraction efficiency, short analysis time and convenient extraction procedure. To the best of our knowledge, it is unprecedented that hydrophilic Ba(2+)-ALG polymer caged Fe(3)O(4)@C(18) magnetic nanomaterial is used to extract organic pollutants from large volumes of water samples. |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Issue Number | 2 |
| Volume Number | 665 |
| e-ISSN | 18734324 |
| Journal | Analytica Chimica Acta |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-04-30 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Alginates Chemistry Ferrosoferric Oxide Magnetics Metal Nanoparticles Solid Phase Extraction Methods Water Pollutants, Chemical Chromatography, High Pressure Liquid Glucuronic Acid Hexuronic Acids Hydrogen-ion Concentration Phthalic Acids Polycyclic Hydrocarbons, Aromatic Salts Spectrophotometry, Infrared Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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