“…Ueta et al prepared polyethylene terephthalate nanofiber sheet by a CO 2 laser supersonic drawing for the preconcentration unit of HPLC analyses [7]. The preconcentration unit was utilized for the analysis of dibutyl phthalate and di(2ethylhexyl)phthalate [7], as well as five water-soluble polycyclic aromatic hydrocarbons [8]. Deng et al prepared four types of nanofiber mat by electrospinning for the trapping of trace heavy metals in atmospheric particles [9].…”