研究了一种基于双配体(巯基嘌呤(MP)和多肽CALNN)修饰金纳米粒子(AuNPs)的比色方法,用于快速、选择性地检测水溶液中的Cd2+.其中,MP作为功能配体通过N原子与Cd2+发生配合作用,从而引起AuNPs聚集；CALNN配体有助于提高体系的稳定性和选择性.当体系中无Cd2+时,溶液呈红色,随着Cd2+浓度的增加,溶液颜色逐渐由红色变为蓝紫色,这种颜色变化可以通过光谱测定还可以用肉眼直接观察.该方法操作简便,具有较好的选择性和较快的响应速度(＜5 min),其检测限达到350 nmol/L.
参考文献
| [1] | Huff J,Lunn R M,Waalkes M P,et al.Cadmium-induced Cancers in Animals and in Humans[J].Int J Occup Environ Health,2007,13(2):202-212. |
| [2] | WANG Liang,LI Qing,YAN Yongshen,et al.Determination of Trace Cadmium in Water by Flame Atomic Absorption Spectrometry/with Ionic Liquid Extraction[J].Chinese J Anal Chem,2011,39 (11):1776-1777 (in Chinese).王良,李清,闫永胜,等.离子液体[Bmim]PF6萃取-火焰原子吸收法测定水中痕量镉[J].分析化学,2011,39(11):1776-1777. |
| [3] | Kaya G,Yaman M.Online Preconcentration for the Determination of Lead,Cadmium and Copper by Slotted Tube Atom Trap(STAT)-flame Atomic Absorption Spectrometry[J].Talanta,2008,75 (4):1127-1133. |
| [4] | SUO Weiguo,HU Qingyuan,CHEN Zaigen,et al.Simultaneous Determination of Cr,Ni,Cu,As,Se,Cd and Pb in Cigarette Paper by ICP-MS[J].Chinese J Appl Chem,2008,25(2):208-211 (in Chinese).索卫国,胡清源,陈再根,等.ICP-MS法同时测定卷烟纸中元素铬、镍、铜、砷、硒、镉、铅[J].应用化学,2008,25(2):208-211. |
| [5] | Peng X,Du J,Fan J,et al.A Selective Fluorescent Sensor for Imaging Cd2 + in Living Cells[J].J Am Chem Soc,2007,129(6):1500-1501. |
| [6] | Cheng T,Xu Y,Zhang S,et al.A Highly Sensitive and Selective OFF-ON Fluorescent Sensor for Cadmium in Aqueous Solution and Living Cell[J].J Am Chem Soc,2008,130(48):16160-16161. |
| [7] | Xu H,Miao R,Fang Z,et al.Quantum Dot-based "Turn-on" Fluorescent Probe for Detection of Zinc and Cadmium Ions in Aqueous Media[J].Anal Chim Acta,2011,687(1):82-88. |
| [8] | Banerjee S,Kar S,Santra S.A Simple Strategy for Quantum Dot Assisted Selective Detection of Cadmium Ions[J].Chem Commun,2008,(26):3037-3039. |
| [9] | Kim Y,Johnson R C,Hupp J T.Gold Nanoparticle-Based Sensing of "Spectroscopically Silent" Heavy Metal Ions[J].Nano Lett,2001,1(4):165-167. |
| [10] | Liu J,Lu Y.A Colorimetric Lead Biosensor Using DNA Zyme-directed Assembly of Gold Nanoparticles[J].J Am Chem Soc,2003,125(22):6642-6643. |
| [11] | Rex M,Hernandez F E,Campiglia A D.Pushing the Limits of Mercury Sensors with Gold Nanorods[J].Anal Chem,2006,78(2):445-451. |
| [12] | Lin S Y,Wu S H,Chen C H.A Simple Strategy for Prompt Visual Sensing by Gold Nanoparticles:General Applications of Interparticle Hydrogen Bonds[J].Angew Chem Int Ed,2006,45(30):4948-4951. |
| [13] | Yoosaf K,Ipe B I,Suresh C H,et al.In Situ Synthesis of Metal Nanoparticles and Selective Naked-Eye Detection of Lead Ions from Aqueous Media[J].J Phys Chem C,2007,111(34):12839-12847. |
| [14] | Wang Z,Ma L.Gold Nanoparticle Probes[J].Coord Chem Rev,2009,253 (11/12):1607-1618. |
| [15] | Zhao W,Chiuman W,Brook M A,et al.Simple and Rapid Colorimetric Biosensors Based on DNA Aptamer and Noncrosslinking Gold Nanoparticle Aggregation[J].ChemBioChem,2007,8 (7):727-731. |
| [16] | Lytton-Jean A K R,Han M S,Mirkin C A.Microarray Detection of Duplex and Triplex DNA Binders with DNA-Modified Gold Nanoparticles[J].AnalChem,2007,79(15):6037-6041. |
| [17] | LI Jingyun,WANG Yi,XU Jiali,et al.Detection of Cefazolin Based on the Plasmonic Resonance Absorption of Gold Nanoparticle[J].Chinese J Appl Chem,2012,29(4):455-461 (in Chinese).李靖云,王邁,许佳丽,等.金纳米颗粒等离子体共振吸收光谱检测头孢唑啉[J].应用化学,2012,29(4):455-461. |
| [18] | Lee J S,Han M S,Mirkin C A.Colorimetric Detection of Mercuric Ion (Hg2+) in Aqueous Media Using DNA Functionalized Gold Nanoparticles[J].Angew Chem Int Ed,2007,46(22):4093-4096. |
| [19] | Medley C D,Smith J E,Tang Z,et al.Gold Nanoparticle-Based Colorimetric Assay for the Direct Detection of Cancerous Cells[J].Anal Chem,2006,80(4):1067-1072. |
| [20] | Xu X,Georganopoulou D G,Hill H D,et al.Homogeneous Detection of Nucleic Acids Based upon the Light Scattering Properties of Silver-Coated Nanoparticle Probes[J].Anal Chem,2007,79(17):6650-6654. |
| [21] | Huang C C,Huang Y F,Cao Z,et al.Aptamer-Modified Gold Nanoparticles for Colorimetric Determination of Platelet-Derived Growth Factors and Their Receptors[J].Anal Chem,2005,77 (17):5735-5741. |
| [22] | Wang Z,Lévy R,Fernig D G,et al.Kinase-Catalyzed Modification of Gold Nanoparticles:A New Approach to Colorimetric Kinase Activity Screening[J].J Am Chem Soc,2006,128 (7):2214-2215. |
| [23] | Turkevich J,Stevenson P C,Hillier J.A Study of the Nucleation and Growth Processes in the Synthesis of Colloidal Gold[J].Discuss Faraday Soc,1951,11:55-75. |
| [24] | Frens G.Controlled Nucleation for the Regulation of the Particle Size in Monodisperse Gold Suspensions[J].Nat Phys Sci,1973,241:20-22. |
| [25] | Selig W.Potentiometric Microdetermination of Phosphate with an Ion-selective Lead Electrode[J].Mikrochim Acta,1970,58(3):564-571. |
| [26] | Li X,Wang J,Sun L,et al.Gold Nanoparticle-based Colorimetric Assay for Selective Detection of Aluminium Cation on Living Cellular Surfaces[J].Chem Commun,2010,46(6):988-990. |
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