A comparison study of nanofiber, microfiber, and new composite nano/microfiber polymers used as sorbents for on-line solid phase extraction in chromatography system

DSpace Repository

Show simple item record

dc.contributor.author Hakova Martina cs
dc.contributor.author Chocholousova Havlikova Lucie cs
dc.contributor.author Chvojka Jiří cs
dc.contributor.author Erben Jakub cs
dc.contributor.author Solich Petr cs
dc.contributor.author Švec František cs
dc.date.accessioned 2018-09-25T12:19:48Z
dc.date.available 2018-09-25T12:19:48Z
dc.date.issued 2018 cs
dc.identifier.issn 0003-2670 cs
dc.identifier.uri https://dspace.tul.cz/handle/15240/32013
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S000326701830504X?via=ihub
dc.description.abstract Three different approaches has been used to obtain nano/micro fibers and their diversity and extraction properties were examined. The effect of their structure on stability in an ultra-high-performance liquid chromatography (UHPLC) system during on-line SPE procedure was monitored. Five types of various nano/micro fiber polymers were used as sorbents: polyamide 6 nanofibers, polyvinylidene difluoride nanofibers, polyethylene microfibers, and two new polycaprolactone microfiber/nanofiber and polycaprolactone microfibers/polyvinylidene difluoride nanofibers composite polymers. The fiber polymers were filled in a cartridge directly connected to the UHPLC system and tested. For each polymer, the optimal conditions of the on-line extraction were found and potential applicability on real samples was tested. The determination of ochratoxin A (OTA) in beer matrix was chosen as a case study. Relevant factors such as the mechanical and chemical stability of the nano/microfibers, filling the cartridges, fiber reusability and the possibility and the repeatability of all processes were involved in the proposed study. A new nano/micro composite sorbent consisting of polycaprolactone microfibers/polyvinylidene difluoride nanofibers was chosen as the most suitable sorbent for the on-line extraction of OTA from a beer matrix. The tested validation parameters had the value of intra-day precision lower than 1.48%, linearity in the range from 0.5 to 100 μg L−1 with r2 ≥ 0.9999 for standard and matrix calibration curve, and recovery in the range 99.1–103.9% at five concentration levels. Long-term precision evaluated for 31 analyses over the period of three months did not exceed 2.9% RSD. It confirmed the column reusability and perfect stability of nano/micro composite sorbent in the presence of organic solvents and after repeated injection of a complex beer matrix. en
dc.format.extent 9 cs
dc.language.iso eng cs
dc.publisher Elsevier Ltd. cs
dc.relation.ispartofseries 1 cs
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S000326701830504X?via=ihub cs
dc.subject Polyamide 6 cs
dc.subject Polyvinylidene difluoride cs
dc.subject Polycaprolactone cs
dc.subject Polyethylene nanofibers cs
dc.subject On-line extraction cs
dc.subject Ochratoxin A cs
dc.title A comparison study of nanofiber, microfiber, and new composite nano/microfiber polymers used as sorbents for on-line solid phase extraction in chromatography system cs
dc.identifier.doi https://doi.org/10.1016/j.aca.2018.04.023
local.relation.issue SEP 6 2018 cs
local.identifier.wok 000432351500005 en
local.citation.spage 44-52 cs
local.citation.epage 44-52 cs
local.identifier.publikace 5484
dc.rights.SHERPA/RoMEO Analytica Chimica Acta (ISSN: 0003-2670, ESSN: 1873-4324), author cannot archive publisher's version/PDF

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search


My Account