Determination of L-proline based on anodic electrochemiluminescence of CdTe quantum dots

被引：13

作者：

Zhang, Meng ^{[1
]}

Wan, Fuwei ^{[1
]}

Wang, Shaowei ^{[1
]}

Ge, Shenguang ^{[1
]}

Yan, Mei ^{[1
]}

Yu, Jinghua ^{[1
]}

机构：

[1] Univ Jinan, Shandong Univ, Key Lab Chem Sensing & Anal, Jinan 250022, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2012年 / 132卷 / 04期

关键词：

CdTe quantum dots (QDs); Flow injection electrochemiluminescence (FI-ECL); L-proline; Sensor; SOLID-STATE ELECTROCHEMILUMINESCENCE; ELECTROGENERATED CHEMILUMINESCENCE; CAPILLARY-ELECTROPHORESIS; AMINO-ACIDS; NANOCRYSTALS; LUMINESCENCE; FABRICATION; SEPARATION; EMISSION;

D O I：

10.1016/j.jlumin.2011.11.030

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel flow injection method for detection of L-proline was proposed in the presence of CdTe quantum dots (QDs). This method is based on the enhanced anodic electrochemiluminescence (ECL) emission of CdTe QDs L-proline in aqueous system. CdTe QDs were modified with thioglycolic acid to obtain stable water-soluble QDs and intensive anodic ECL emission in Na2CO3-NaHCO3 buffer solution at an indium tin oxide (ITO) electrode, which was used for the sensitive detection of ECL enhancement using our homemade flow cell. Under the optimal conditions, the ECL intensity was correlated linearly with the concentration of L-proline over the range of 1.0 x 10(-8)-1.0 x 10(-4) g mL(-1) (r=0.9996) and the detection limit was 5.0 x 10(-9) g mL(-1). The relative standard deviation was 1.12% for 6.0 x 10(-5) g mL(-1) L-proline (n=11). The possible mechanism was discussed. This method put forward a new efficient ECL methodology for enhancement-related determination of L-proline successfully. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：938 / 943

页数：6

共 46 条

[1] Semiconductor clusters, nanocrystals, and quantum dots [J].

Alivisatos, AP .

SCIENCE, 1996, 271 (5251) :933-937

[2] Lysine-Functionatized Silver Nanoparticles for Visual Detection and Separation of Histidine and Histidine-Tagged Proteins [J].

Bae, Doo Ri ;

Han, Won Seok ;

Lim, Jung Mi ;

Kang, Sunwoo ;

Lee, Jin Yong ;

Kang, Dongmin ;

Jung, Jong Hwa .

LANGMUIR, 2010, 26 (03) :2181-2185

[3] Electrochemistry and electrogenerated chemiluminescence of CdTe nanoparticles [J].

Bae, Y ;

Myung, N ;

Bard, AJ .

NANO LETTERS, 2004, 4 (06) :1153-1161

[4]

Chen G.Z., 1990, SCIENCE

[5] Low-Potential Electrochemiluminescent Sensing Based on Surface Unpassivation of CdTe Quantum Dots and Competition of Analyte Cation to Stabilizer [J].

Cheng, Lingxiao ;

Liu, Xuan ;

Lei, Jianping ;

Ju, Huangxian .

ANALYTICAL CHEMISTRY, 2010, 82 (08) :3359-3364

[6] Flow injection analysis system equipped with a newly designed electrochemiluminescent detector and its application for detection of 2-thiouracil [J].

Chi, YW ;

Duan, JP ;

Lin, SD ;

Chen, GN .

ANALYTICAL CHEMISTRY, 2006, 78 (05) :1568-1573

[7] A study on the electrochemical and electrochemiluminescent behavior of homogentisic acid at carbon electrodes [J].

Chi, YW ;

Duan, JP ;

Zhao, ZF ;

Chen, HQ ;

Chen, GN .

ELECTROANALYSIS, 2003, 15 (03) :208-218

[8] Electrogenerated chemiluminescence. 76. Excited singlet state emission vs excimer emission in emission in ter(9,9-diarylfluorene)s [J].

Choi, JP ;

Wong, KT ;

Chen, YM ;

Yu, JK ;

Chou, PT ;

Bard, AJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (51) :14407-14413

[9] Electrochemiluminescent monolayers on metal oxide electrodes: Detection of amino acids [J].

Dennany, Lynn ;

O'Reilly, Emmet J. ;

Keyes, Tia E. ;

Forster, Robert J. .

ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (10) :1588-1594

[10] Enhanced solid-state electrochemiluminescence of CdS nanocrystals composited with carbon nanotubes in H2O2 solution [J].

Ding, Shou-Nian ;

Xu, Jing-Juan ;

Chen, Hong-Yuan .

CHEMICAL COMMUNICATIONS, 2006, (34) :3631-3633

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