Novel coating for solid-phase microextraction: electropolymerization of a molecular receptor functionalized with 2,2'-bithiophene for the determination of environmental pollutants at trace levels.
A novel solid-phase microextraction coating based on the electropolymerization of a molecular receptor properly functionalized with 2,2'-bithiophene was developed for the determination of environmental pollutants in air and water samples. The 2,2'-bithiophene-based film was electrochemically deposed on the surface of a gold wire using cyclic voltammetry. The fibres showed a porous structure with an average thickness of 12+/-3 microm (n=5): a good intra-batch and inter-batch repeatability with RSD lower than 14% was also observed. The selective interactions via hydrogen bonding with organic molecules containing electronegative atoms was proved: LOD values in the low ng/l range allowed the determination of vinyl chloride and chlorobenzenes at trace levels in environmental matrices.
Mattarozzi
Monica
M
Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università degli Studi di Parma, Viale Usberti 17/A, 43100 Parma, Italy.
Giannetto
Marco
M
Secchi
Andrea
A
Bianchi
Federica
F
D000393:Air Pollutants / Q000032:analysis*; D002722:Chlorobenzenes / Q000032:analysis; D004563:Electrochemistry; D052617:Solid Phase Microextraction / Q000379:methods*; D013876:Thiophenes / Q000737:chemistry*; D014752:Vinyl Chloride / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
D000393:Air Pollutants; D002722:Chlorobenzenes; D013876:Thiophenes; D014874:Water Pollutants, Chemical; D014752:Vinyl Chloride