PMID- 26761614 OWN - NLM STAT- MEDLINE DCOM- 20161021 LR - 20191210 IS - 1873-4235 (Electronic) IS - 0956-5663 (Linking) VI - 79 DP - 2016 May 15 TI - Nano-TiO(2) modified carbon paste sensor for electrochemical nicotine detection using anionic surfactant. PG - 589-92 LID - S0956-5663(15)30742-9 [pii] LID - 10.1016/j.bios.2015.12.090 [doi] AB - A newly competitive electrochemical sensor for nicotine (NIC) detection was successfully achieved. Nano-TiO2 with a carbon paste electrode (CPE) were used for the sensor construction, where Nano-TiO2 was considered as one of the richest and highly variable class of materials. The sensor showed electrocatalytic activity in both aqueous and micellar media toward the oxidation of NIC at Britton-Robinson (B-R) buffer solution (4x10(-2)M) of pH range (2.0-8.0) containing (1.0mM) sodium dodecylsulfate (SDS) using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques. Scanning electron microscope (SEM) and Energy Dispersive X-Ray Analysis (EDX) techniques were also used. The linear range of detection for NIC using the new Nano-TiO2 Modified Carbon Paste sensor (NTMCP) was detected using diffrential pulse voltammetry (DPV) technique and it was found between 2x10(-6)M and 5.4x10(-4)M with a detection limit of 1.34x10(-8)M. The obtained results clarified the simplicity, high sensitivity and selectivity of the new NTMCPE for nicotine determination in real cigarettes and urine samples. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Shehata, M AU - Shehata M AD - Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt. Electronic address: Mohammed.shehata9011@yahoo.com. FAU - Azab, S M AU - Azab SM AD - Pharmaceutical Chemistry Dept., National Organization for Drug Control and Research [NODCAR], 6 Abu Hazem Street, Pyramids Ave. 29, Giza, Egypt. FAU - Fekry, A M AU - Fekry AM AD - Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt. FAU - Ameer, M A AU - Ameer MA AD - Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt. LA - eng PT - Evaluation Study PT - Journal Article DEP - 20151225 PL - England TA - Biosens Bioelectron JT - Biosensors & bioelectronics JID - 9001289 RN - 0 (Surface-Active Agents) RN - 15FIX9V2JP (titanium dioxide) RN - 6M3C89ZY6R (Nicotine) RN - 7440-44-0 (Carbon) RN - D1JT611TNE (Titanium) SB - IM MH - Carbon/*chemistry MH - Electrochemical Techniques/instrumentation MH - Electrodes MH - Humans MH - Nanoparticles/*chemistry/ultrastructure MH - Nicotine/*analysis/*urine MH - Surface-Active Agents/chemistry MH - Titanium/*chemistry MH - Tobacco Products/*analysis OTO - NOTNLM OT - Cyclic voltammetry OT - Nano-TiO(2) OT - Nicotine OT - Scanning electron microscope EDAT- 2016/01/14 06:00 MHDA- 2016/10/22 06:00 CRDT- 2016/01/14 06:00 PHST- 2015/06/29 00:00 [received] PHST- 2015/12/15 00:00 [revised] PHST- 2015/12/24 00:00 [accepted] PHST- 2016/01/14 06:00 [entrez] PHST- 2016/01/14 06:00 [pubmed] PHST- 2016/10/22 06:00 [medline] AID - S0956-5663(15)30742-9 [pii] AID - 10.1016/j.bios.2015.12.090 [doi] PST - ppublish SO - Biosens Bioelectron. 2016 May 15;79:589-92. doi: 10.1016/j.bios.2015.12.090. Epub 2015 Dec 25.