| Title: | A single-step synthesized supehydrophobic melamine formaldehyde foam for trace determination of volatile organic pollutants |
| Author(s): | Bagheri H; Zeinali S; Baktash MY; |
| Address: | "Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran. Electronic address: bagheri@sharif.edu. Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran" |
| DOI: | 10.1016/j.chroma.2017.10.012 |
| ISSN/ISBN: | 1873-3778 (Electronic) 0021-9673 (Linking) |
| Abstract: | "Superhydrophobic materials have attracted many attentions in recent years while their application in sample preparation remained almost intact. In this project, a rough surface of melamine formaldehyde foam was silanized by chemical deposition of trichloromethylsilane to form a highly porous and superhydrophobic material, presumably a suitable medium for extracting non-polar compounds such as benzene and its methyl derivatives. The prepared sorbent was packed in a needle for the headspace needle-trap microextraction of benzene, toluene, ethylbenzene and xylenes (BTEX). Major parameters associated with the extraction/desorption processes were considered for optimization. Under the optimized condition, the linear dynamic range was from 20 to 1000ngL(-1) (R(2)>0.98). For evaluating the method precision, inter-day, intra-day and needle-to-needle relative standard deviations (RSD%) were calculated (<13%) for water samples spiked at 500ngL(-1) of BTEX. The LOD values were in the range of 5-10ngL(-1) using gas chromatography-flame ionization detector (GC-FID). Finally, hookah water was considered as suspicious real sample, assumed to contain volatile organic pollutants. Among these pollutants, toluene was identified, at the concentration level of 439ngL(-1), in one of the hookah samples while benzene was detectable at much lower level. Also, some other organic pollutants were identified in the smoke and hookah water using GC-mass spectrometry (GC-MS). In addition, the suspicious BTEX-containing samples from petrochemical waste water of Asalooye (Persian Gulf) were analyzed" |
| Keywords: | "Benzene/analysis Benzene Derivatives Chemistry Techniques, Analytical/*methods Flame Ionization Gas Chromatography-Mass Spectrometry Limit of Detection Toluene/analysis Triazines/*chemistry Wastewater/chemistry Water/*chemistry Water Pollutants, Chemical/;" |
| Notes: | "MedlineBagheri, Habib Zeinali, Shakiba Baktash, Mohammad Yahya eng Netherlands 2017/10/17 J Chromatogr A. 2017 Nov 24; 1525:10-16. doi: 10.1016/j.chroma.2017.10.012. Epub 2017 Oct 6" |
