A novel microextractor stick (polyaniline/zinc film/stainless steel) for polycyclic aromatic hydrocarbons in water.
A novel microextractor stick (MES) has been developed for the determination of trace amounts of polycyclic aromatic hydrocarbons (PAHs) in water samples. The proposed MES was prepared by electrodepositing a Zn-film onto a stainless steel stick followed by a coating with polyaniline (PANI) sorptive layers. This PANI/Zn-film/stainless steel stick produced a large surface area, provided a high extraction efficiency (82.0 ± 6.2% to 111.0 ± 7.5% recovery) of spiked chrysene (Chry) and benzo(a)pyrene (BaP). This MES is cost-effective, easy to prepare, robust and provides a good stick-to-stick reproducibility (n = 10) with a relative standard deviation of less than 10%. The effect of various parameters on the efficiency of extraction of PAHs were optimized, including the extraction time, extraction and desorption stirring speeds, volume of desorption solvent and desorption time. Under the optimum conditions, the limit of detection (S/N ≥ 3) and limit of quantification (S/N ≥ 10) of both Chry and BaP were 0.05 and 0.12 μg L(-1), respectively. The developed MES was successfully applied to determine PAHs in real water samples.
a Trace Analysis and Biosensor Research Center , Prince of Songkla University , Hat Yai , Songkhla , Thailand.
Thitiphan
T
Chaiphet
Opas
O
Bunkoed
Chongdee
C
Thammakhet
Panote
P
Thavarungkul
Proespichaya
P
Kanatharana
D000327:Adsorption; D000814:Aniline Compounds / Q000737:chemistry; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry / Q000302:isolation & purification*; D015203:Reproducibility of Results; D052617:Solid Phase Microextraction / Q000295:instrumentation / Q000379:methods*; D013193:Stainless Steel / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D015032:Zinc / Q000737:chemistry
D000814:Aniline Compounds; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; C416807:polyaniline; D013193:Stainless Steel; D015032:Zinc
Microextractor stick; Zinc‐film; polyaniline; polycyclic aromatic hydrocarbons; trace analysis