Selective and sensitive detection of picric acid in aqueous, sol-gel and solid support media by Ln(III) probes

被引：23

作者：

Sahoo, Jashobanta ^{[1
,2
,3
]}

Lakshmi, D. Shanthana ^{[1
,2
]}

Suresh, E. ^{[1
,2
]}

Subramanian, P. S. ^{[1
,2
]}

机构：

[1] CSIR, Cent Salt & Marine Chem Res Inst, Gijubhai Badhega Marg, Bhavnagar, Gujarat, India

[2] Acad Sci & Innovat Res AcSIR, CSIR CSMCRI, Bhavnagar 364002, Gujarat, India

[3] CV Raman Coll Engn, Dept Chem, Bhubaneswar 752054, Odisha, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2017年 / 250卷

关键词：

Lanthanide; Explosive; Picric acid; Sensor; Solid films; Luminescence; METAL-ORGANIC FRAMEWORK; RICH SUPRAMOLECULAR POLYMERS; NITROAROMATIC EXPLOSIVES; PHASE DETECTION; IONIC LIQUID; LUMINESCENT SENSOR; FLUORESCENT-PROBE; VAPOR-PHASE; WATER; 2,4,6-TRINITROPHENOL;

D O I：

10.1016/j.snb.2017.04.170

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The luminescent lanthanide complexes EuL, TbL and its polymeric compounds EuL@PVA & TbL@PVA (where PVA = polyvinylalcohol) were synthesised. The complexes are soluble in water and depict their metal centred luminescence. The luminescent properties are meticulously monitored for sensing various nitro compounds in aqueous, polymeric, solid support and found to be highly selective for picric acid (PA). Remarkably, the minimum detection limit of PA is falling in micro molar (M) concentration (i.e., D-lim=0.5 mu M) exhibits a strong quenching constant (K-sv = 85530 M-1) in aqueous medium. Further the detection of PA in micromolar level is demonstrated in sol-gel type polymeric medium and on solid support via contact mode using Whatman paper strips. Time dependant quenching of luminescence of PA on paper strips were also investigated by naked eye detection for its user friendly application. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：215 / 223

页数：9

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