Detection of Sn(II) ions via quenching of the fluorescence of carbon nanodots

被引：4
作者：
Siti Nur Akmar Mohd Yazid
Suk Fun Chin
Suh Cem Pang
Sing Muk Ng
机构：
[1] Universiti Malaysia Sarawak,Faculty of Resource Science and Technology
[2] Swinburne University of Technology,Faculty of Engineering, Computing and Science
来源：
Microchimica Acta | 2013年 / 180卷
关键词：
Starch nanoparticles; Carbon nanodots; Sn(II) ions; Fluorescence; Quenching;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report that fluorescent carbon nanodots (C-dots) can act as an optical probe for quantifying Sn(II) ions in aqueous solution. C-dots are synthesized by carbonization and surface oxidation of preformed sago starch nanoparticles. Their fluorescence is significantly quenched by Sn(II) ions, and the effect can be used to determine Sn(II) ions. The highest fluorescence intensity is obtained at a concentration of 1.75 mM of C-dots in aqueous solution. The probe is highly selective and hardly interfered by other ions. The quenching mechanism appears to be predominantly of the static (rather than dynamic) type. Under optimum conditions, there is a linear relationship between fluorescence intensity and Sn(II) ions concentration up to 4 mM, and with a detection limit of 0.36 μM.
引用
收藏
页码：137 / 143
页数：6
相关论文
共 154 条
[1]  
Unal U(2011)Simultaneous determination of trace Sn(II) and Sn(IV) using differential pulse polarography and application Turk J Chem 35 73-85
[2]  
Somer G(1983)The effect of tin chloride on the structure and function of DNA in human white blood cells Chem Biol Interact 46 189-200
[3]  
McClean JR(2008)Developmental and genetic toxicity of stanneous chloride in mouse dams and fetuses Mutat Res 657 105-110
[4]  
Birnboim HC(1987)Atomic absorption determination of tin using in situ concentration of stannane in a graphite furnace Anal Chem 59 2441-2444
[5]  
Pontefact R(2005)Electrochemical oxidation of 8-hydroxyquinoline and selective determination of tin (II) at solid electrodes Electroanalysis 8 25-29
[6]  
Kaplan JG(1996)Determination of tin traces in water samples by adsorptive stripping voltammetry Anal Chim Acta 319 19-24
[7]  
El-Makawy AI(2003)Selective determination of tin (II) ion in water by solvent extraction with salicylidenamino-2-thiophenol followed by reversed-phase high-performance liquid chromatography with photometric detection J Liq Chromatogr Relat Technol 26 3129-3139
[8]  
Girgis SM(2009)On site determination of tin geological and water samples using novel organic reagent with iodide J Hazard Mater 164 95-98
[9]  
Khalil WKB(2011)Ultrasensitive detection of mercury(II) using CdTe quantum dots in sol–gel-derived silica spheres coated with calix[6]arene as fluorescent probes Microchim Acta 175 113-119
[10]  
Sturgeon RE(2012)An efficient conjugated polymer sensor based on the aggregation-induced fluorescence quenching mechanism for the specific detection of palladium and platinum ion J Mater Chem 22 3555-3561
12345678910