PMID- 35868699 OWN - NLM STAT- MEDLINE DCOM- 20220726 LR - 20220726 IS - 1873-4324 (Electronic) IS - 0003-2670 (Linking) VI - 1220 DP - 2022 Aug 8 TI - SPR-based assay kit for rapid determination of Pb(2). PG - 340030 LID - S0003-2670(22)00601-8 [pii] LID - 10.1016/j.aca.2022.340030 [doi] AB - A recyclable optical nanosensor was developed by immobilizing l-tyrosine functionalized silver nanoparticles (AgNPs) on the polyethylene terephthalate (PET) substrate for rapid determination of Pb(2+) ions. At first, the l-tyrosine functionalized AgNPs were assessed in the solution phase; the response time was lower than 15 s, and a limit of detection lower than 9 nM was obtained in the dynamic range of 1-1000 nM. For fabrication of the optical assay kit, the design of experiment (DOE) was used to optimize the immobilization efficiency of the nanoparticles on PET films by studying AgNO(3) concentration and pH as two crucial parameters. The assay kit in optimal conditions showed a sharp localized surface plasmon resonance band suitable for sensitive determination of Pb(2+). The fabricated sensor showed promising results for rapid determination of lead ions with the limit of detection value as low as 1 nM (S/N = 3). The sensor reproduced the obtained results even after three consecutive runs, which proved the recyclability of the optical assay kit. The recoveries of the spiked concentration in real samples were in the range of 95%-103%, which confirmed the applicability of the sensor in practical applications. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Amirjani, Amirmostafa AU - Amirjani A AD - Department of Materials Science and Engineering, Sharif University of Technology, P.O.Box: 11155-9466, Tehran, Iran. Electronic address: amirjani@sharif.edu. FAU - Kamani, Paria AU - Kamani P AD - Department of Materials Science and Engineering, Sharif University of Technology, P.O.Box: 11155-9466, Tehran, Iran. FAU - Hosseini, Hamid Reza Madaah AU - Hosseini HRM AD - Department of Materials Science and Engineering, Sharif University of Technology, P.O.Box: 11155-9466, Tehran, Iran. Electronic address: madaah@sharif.edu. FAU - Sadrnezhaad, S K AU - Sadrnezhaad SK AD - Department of Materials Science and Engineering, Sharif University of Technology, P.O.Box: 11155-9466, Tehran, Iran. Electronic address: sadrnezh@sharif.edu. LA - eng PT - Journal Article DEP - 20220609 PL - Netherlands TA - Anal Chim Acta JT - Analytica chimica acta JID - 0370534 RN - 0 (Ions) RN - 2P299V784P (Lead) RN - 3M4G523W1G (Silver) RN - 42HK56048U (Tyrosine) SB - IM MH - Ions MH - Lead MH - *Metal Nanoparticles MH - *Silver MH - Surface Plasmon Resonance/methods MH - Tyrosine OTO - NOTNLM OT - Amino acid OT - Heavy metal OT - Lead ion OT - Nanosensor OT - Optical sensors OT - Plasmonic OT - Silver nanoparticles OT - l-tyrosine EDAT- 2022/07/23 06:00 MHDA- 2022/07/27 06:00 CRDT- 2022/07/22 21:04 PHST- 2022/02/02 00:00 [received] PHST- 2022/06/01 00:00 [revised] PHST- 2022/06/02 00:00 [accepted] PHST- 2022/07/22 21:04 [entrez] PHST- 2022/07/23 06:00 [pubmed] PHST- 2022/07/27 06:00 [medline] AID - S0003-2670(22)00601-8 [pii] AID - 10.1016/j.aca.2022.340030 [doi] PST - ppublish SO - Anal Chim Acta. 2022 Aug 8;1220:340030. doi: 10.1016/j.aca.2022.340030. Epub 2022 Jun 9.