Microfibers for juice analysis by solid-phase microextraction

Fonseca, Renata Borchetta Fernandes; Carvalho, Lucía María Jaeger de; Rangel, Carolina Netto; Bizzo, H. R.

doi:10.1590/s0101-20612008000500026

Cited by 1 publication

(1 citation statement)

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“…Microfiber cleaning fabrics are sometimes described as having a magnetic attraction to dirt and dust. Recently, microfibers were used for juice analysis by solid‐phase microextraction 6. Our interest is focused on molecular‐imprinted microfibers, which might be used for solid‐phase extraction, since the molecular‐imprinted microfibers could be used directly compared with nanofibers 7…”

Section: Introductionmentioning

confidence: 99%

Molecularly imprinted polyethersulfone microfibers for the binding and recognition of bisphenol A

Wang

Wei

Zhang

et al. 2009

J of Applied Polymer Sci

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Bisphenol A (BPA)-imprinted polyethersulfone (PES) microfibers for the recognition of BPA were prepared by means of wet-spinning method based on the liquid-liquid phase separation technique. Two kinds of the BPA-imprinted microfibers were fabricated with the diameters of about 85 lm and 265 lm, respectively. Extraction of BPA from the microfibers was carried out by immersing the imprinted microfibers into ethanol. In the recognition experiments, the binding amounts were about 24.0, 43.0, and 70.0 lmol/g for the nonimprinted microfibers, whereas those were about 50.0, 87.0, 120.0 lmol/g for the imprinted PES microfibers with the diameter of about 85 lm in 100, 200, and 400 lM BPA solution, respectively. Both of the binding amounts and the adsorption rate for the imprinted microfibers with smaller diameter were higher than that for the microfibers with larger diameters. The selectivity results indicated that the BPA-imprinted microfibers showed higher recognition coefficient (a) for BPA than phenol.

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Section: Introductionmentioning

confidence: 99%