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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Su, Chengyong Ke, Yuanyuan Zhu, Fang Ouyang, Gangfeng Zeng, Feng Luan, Tiangang |
| Description | Country affiliation: China Author Affiliation: Ke Y ( State Key Laboratory Breeding Base of Eco-Environments and Bio-Resources of the Three Gorges Reservoir Region/MOE Key Laboratory of Aquatic Product Safety/KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China.) |
| Abstract | The coating material determines the sensitivity and selectivity of solid-phase microextraction (SPME). Graphene is predicted to have remarkable properties, such as high thermal conductivity, superior mechanical properties, excellent electronic transport properties and good extraction ability. In this work we immobilized the graphene onto a stainless steel wire to obtain a novel SPME coating based on sol-gel technique. The new fiber possessed a homogeneous, porous surface and showed excellent thermal and solvent stability. Under the optimized conditions, its extraction efficiencies for seven organochlorine pesticides (OCPs) were higher than those of two commercial fibers (PDMS, 85µm; PDMS/DVB, 65µm). Using the self-made sol-gel-graphene SPME fiber, the limits of detections for seven OCPs were found to be ranged from 0.19ngL(-1) (o,p-DDT) to 18.3ngL(-1) (heptachlor). The repeatabilities for each single fiber were evaluated and the relative standard deviations (RSDs) ranged from 4.7% to 10.6%. The reproducibilities of fiber-to-fiber were 2.3-13.6%. The developed method was successfully applied to the determination of OCPs in rainwater. Hexachlorobenzene (62.7ng/L), trans-chlordance (79.6ng/L) and p,p-DDT (9.30ng/L) were detected. The relative recoveries ranged from 77.7% to 120%. |
| ISSN | 00219673 |
| Volume Number | 1300 |
| e-ISSN | 18733778 |
| Journal | Journal of Chromatography A |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-07-26 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Graphite Chemistry Hydrocarbons, Chlorinated Analysis Pesticides Solid Phase Microextraction Methods Chromatography, Gas Isolation & Purification Limit Of Detection Linear Models Phase Transition Reproducibility Of Results Instrumentation Water Pollutants, Chemical Journal Article Research Support, Non-u.s. Gov't Discipline Analytical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Medicine Analytical Chemistry Biochemistry |
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