A biosensor based on gold nanoparticles, dihexadecylphosphate, and tyrosinase for the determination of catechol in natural water
被引:83
作者:
Vicentini, Fernando Campanha
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
Univ Fed Sao Carlos, Ctr Nat Sci, Rod Lauri Simoes Barros Km 12, BR-18290000 Buri, SP, BrazilUniv Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
Vicentini, Fernando Campanha
[1
,2
]
Garcia, Livia L. C.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, BrazilUniv Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
Garcia, Livia L. C.
[1
]
Figueiredo-Filho, Luiz C. S.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
Fed Inst Parana, Campus Paranavai,Rua Jose Felipe Tequinha 1400, BR-87703536 Paranavai, PR, BrazilUniv Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
Figueiredo-Filho, Luiz C. S.
[1
,3
]
Janegitz, Bruno C.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
Univ Fed Sao Carlos, Dept Nat Sci Math & Educ, BR-13600970 Araras, SP, BrazilUniv Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
Janegitz, Bruno C.
[1
,4
]
Fatibello-Filho, Orlando
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, BrazilUniv Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
Fatibello-Filho, Orlando
[1
]
机构:
[1] Univ Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil
[2] Univ Fed Sao Carlos, Ctr Nat Sci, Rod Lauri Simoes Barros Km 12, BR-18290000 Buri, SP, Brazil
[3] Fed Inst Parana, Campus Paranavai,Rua Jose Felipe Tequinha 1400, BR-87703536 Paranavai, PR, Brazil
[4] Univ Fed Sao Carlos, Dept Nat Sci Math & Educ, BR-13600970 Araras, SP, Brazil
In this work, a biosensor using a glassy carbon electrode modified with gold nanoparticles (AuNPs) and tyrosinase (Tyr) within a dihexadecylphosphate film is proposed. Cystamine and glutaraldehyde crosslinking agents were used as a support for Tyr immobilization. The proposed biosensor was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and cyclic voltammetry in the presence of catechol. The determination of catechol was carried out by amperometry and presented a linear concentration range from 2.5 x 10(-6) to 9.5 x 10(-6) mol L-1 with a detection limit of 1.7 x 10(-7) mol L-1. The developed biosensor showed good repeatability and stability. Moreover, this novel amperometric method was successfully applied in the determination of catechol in natural water samples. The results were in agreement with a 95% confidence level for those obtained using the official spectrophotometric method. (C) 2015 Elsevier Inc. All rights reserved.
机构:
Dunarea de Jos Univ Galati, Fac Sci & Environm, Dept Chem Phys & Environm, Galati 800008, RomaniaDunarea de Jos Univ Galati, Fac Sci & Environm, Dept Chem Phys & Environm, Galati 800008, Romania
Apetrei, C.
论文数: 引用数:
h-index:
机构:
Rodriguez-Mendez, M. L.
De Saja, J. A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Valladolid, Fac Ciencias, Dptm Fis Materia Condensada, E-47002 Valladolid, SpainDunarea de Jos Univ Galati, Fac Sci & Environm, Dept Chem Phys & Environm, Galati 800008, Romania
机构:
Dunarea de Jos Univ Galati, Fac Sci & Environm, Dept Chem Phys & Environm, Galati 800008, RomaniaDunarea de Jos Univ Galati, Fac Sci & Environm, Dept Chem Phys & Environm, Galati 800008, Romania
Apetrei, C.
论文数: 引用数:
h-index:
机构:
Rodriguez-Mendez, M. L.
De Saja, J. A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Valladolid, Fac Ciencias, Dptm Fis Materia Condensada, E-47002 Valladolid, SpainDunarea de Jos Univ Galati, Fac Sci & Environm, Dept Chem Phys & Environm, Galati 800008, Romania