Publikationer från Malmö universitet
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Gold-modified paper as microfluidic substrates with reduced biofouling in potentiometric ion sensing
Nanyang Technological University, Singapore.
Åbo Akademi University, Finland.
Åbo Akademi University, Finland; Nanyang Environment and Water Research Institute, Singapore.
Malmö universitet, Biofilms Research Center for Biointerfaces. Malmö universitet, Fakulteten för hälsa och samhälle (HS), Institutionen för biomedicinsk vetenskap (BMV).
Visa övriga samt affilieringar
2021 (Engelska)Ingår i: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 344, artikel-id 130200Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Microfluidic sampling media based on paper and its modifications with either gold nanoparticles or sputtered gold were evaluated for potentiometric determination of Na+, K+, and Cl– ions in clinically relevant samples. The measurements were conducted in comparison to other commonly considered microfluidic substrates, i.e. sponge, polyester textile, and polyamide textile. Ion determination was done by using solid-contact ion-selective electrodes based on plasticized PVC membranes for Na+, K+, and Cl– ions and utilizing PEDOT(PSS) or PEDOT(Cl) as the ion-to-electron transducer. The solid-contact ion-selective electrodes and a solid-state reference electrode were placed directly on the substrate into which the sample solution was wicked. Transport of bovine serum albumin (BSA) through the paper substrate was studied by ellipsometry. Modification of the paper substrates by gold nanoparticles (AuNPs) was found to slow down the transport of BSA through the paper, when compared with unmodified paper substrates and when compared with all the other alternative sampling matrices studied. The retention of BSA obtained with AuNP-modified paper substrates significantly improved the accuracy of the potentiometric ion determinations in sweat, saliva, artificial tears, and artificial serum. The potentiometric results were validated by inductively coupled plasma optical emission spectrometry (ICP-OES) and ion chromatography (IC). The study indicates that modification of paper by AuNPs is a feasible approach to reduce biofouling of sensors that are used in the paper-based analysis of clinically relevant samples. © 2021 Elsevier B.V.

Ort, förlag, år, upplaga, sidor
Elsevier, 2021. Vol. 344, artikel-id 130200
Nyckelord [en]
Biofouling, Gold modified paper substrates, Ion-selective electrodes, Paper-based solution sampling, Potentiometric sensors, Body fluids, Desalination, Fiber optic sensors, Gold nanoparticles, Inductively coupled plasma, Ion selective electrodes, Ions, Mammals, Metal nanoparticles, Optical emission spectroscopy, Potentiometers (electric measuring instruments), Spectrometry, Textiles, Bovine serum albumins, Cl- ions, Gold modified paper substrate, Gold nano-particles, Gold nanoparticle, Ion-selective electrode, Paper substrate, Potentiometrics, Solid contacts, Substrates
Nationell ämneskategori
Analytisk kemi
Identifikatorer
URN: urn:nbn:se:mau:diva-44658DOI: 10.1016/j.snb.2021.130200ISI: 000679295500008Scopus ID: 2-s2.0-85108073872OAI: oai:DiVA.org:mau-44658DiVA, id: diva2:1578783
Tillgänglig från: 2021-07-07 Skapad: 2021-07-07 Senast uppdaterad: 2022-04-26Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Person

Shafaat, AtefehRuzgas, Tautgirdas

Sök vidare i DiVA

Av författaren/redaktören
Shafaat, AtefehRuzgas, Tautgirdas
Av organisationen
Biofilms Research Center for BiointerfacesInstitutionen för biomedicinsk vetenskap (BMV)
I samma tidskrift
Sensors and actuators. B, Chemical
Analytisk kemi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 91 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf