Naked eye sensing of melamine: aggregation induced recognition by sodium D-gluconate stabilised silver nanoparticles

被引：17

作者：

Kaleeswaran, Palanichamy ^{[1
]}

Nandhini, Thanasekaran ^{[1
]}

Pitchumani, Kasi ^{[1
,2
]}

机构：

[1] Madurai Kamaraj Univ, Sch Chem, Dept Nat Prod Chem, Madurai 625021, Tamil Nadu, India

[2] Madurai Kamaraj Univ, Ctr Green Chem Proc, Madurai 625021, Tamil Nadu, India

来源：

NEW JOURNAL OF CHEMISTRY | 2016年 / 40卷 / 04期

关键词：

TURN-ON FLUORESCENT; MOLECULARLY IMPRINTED POLYMER; ENHANCED RAMAN-SPECTROSCOPY; MODIFIED GOLD NANOPARTICLES; TANDEM MASS-SPECTROMETRY; COLORIMETRIC DETECTION; VISUAL DETECTION; QUANTUM DOTS; RAW-MILK; BETA-CYCLODEXTRIN;

D O I：

10.1039/c5nj03083h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A highly selective, sensitive and low-cost colorimetric sensor for a biologically important analyte, namely melamine, is reported using sodium D-gluconate stabilised silver nanoparticles. Hydrogen bonding between sodium D-gluconate and melamine induces aggregation of silver nanoparticles with a consequent color change. The aggregation induced color change from yellow to red is monitored by UV-visible spectroscopy and the structure is confirmed by HRTEM. The selective sensing of melamine by sodium D-gluconate stabilised silver nanoparticles is also confirmed by competitive binding studies. The detection limit is found to be 5 x 10(-7) M (0.06 ppm) and this melamine sensor also finds applications in real sample analysis.

引用

页码：3869 / 3874

页数：6

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[21] FERTILIZER NITROGEN SOURCES - NITRIFICATION OF TRIAZINE NITROGEN [J].