title: Nitrite sensing based on the carbon dots-enhanced chemiluminescence from peroxynitrous acid and carbonate.
abstract: In this work, chemiluminescence (CL) from peroxynitrous acid (ONOOH)-carbonate system greatly amplified by carbon dots was observed. The CL mechanism of the ONOOH-carbonate-carbon dots system has been investigated and the results reveal that the carbon dots could serve as the energy acceptor, which gives us new insight into the optical properties of the new emerging carbon nanomaterial. There is a good linear relationship between the CL signal and the concentration of the nitrite using for ONOOH formation, which provides us a nitrite sensing method with sensitivity as high as 5.0×10(-9) M (S/N=3). The method has been successfully applied to the determination of nitrite in tap water with the recovery of 98%. The standard deviations are within 2.5%.
authors.affiliation: Department of Pharmaceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350004, China; Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Lin
authors.affiliation: Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China.
authors.forename: Xiangnan
authors.initials: X
authors.lastname: Dou
authors.affiliation: Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China.
authors.forename: Haifang
authors.initials: H
authors.lastname: Li
authors.affiliation: Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China. Electronic address: jmlin@mail.tsinghua.edu.cn.
authors.forename: Jin-Ming
authors.initials: JM
authors.lastname: Lin
mesh_terms: D002254:Carbonates / Q000737:chemistry*; D060766:Drinking Water / Q000737:chemistry*; D017022:Flow Injection Analysis / Q000379:methods; D006801:Humans; D049449:Luminescence; D008163:Luminescent Measurements; D009573:Nitrites / Q000032:analysis*; D030421:Peroxynitrous Acid / Q000737:chemistry*; D045663:Quantum Dots / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D002254:Carbonates; D060766:Drinking Water; D009573:Nitrites; D014874:Water Pollutants, Chemical; D030421:Peroxynitrous Acid
keywords: Carbon dots; Carbonate; Chemiluminescence; Peroxynitrous acid