Sensing and analysis of soluble phosphates in environmental samples: A review

Warwick, Christopher; Guerreiro, António; Soares, Ana

doi:10.1016/j.bios.2012.07.012

Cited by 215 publications

(111 citation statements)

References 71 publications

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“…Artificial biomimetic receptors containing amide and urea groups as anion recognition sites constitute one of the largest sub-groups in this field (Asthana et al, 2013;Chang et al, 2015;Ge et al, 2014;Kubik et al, 2005;Lin et al, 2015;Pinter et al, 2013;Warwick et al, 2013;White and Beer, 2013;White et al, 2014, Warwick et al, 2013. Chloride recognition with these systems is mostly achieved by hydrogen bonding interactions, which in many cases are not strong enough to overcome the high energy of hydration (ΔG = -340 kJ/mol) besides the fact that water molecules efficiently compete for the binding sites (Butler and Parker, 2013;Kubik, 2010).…”

Section: Introductionmentioning

confidence: 99%

Sensitive water-soluble fluorescent chemosensor for chloride based on a bisquinolinium pyridine-dicarboxamide compound

Bazany‐Rodríguez

Martı́nez-Otero

Barroso-Flores

et al. 2015

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

Sensitive water-soluble fluorescent chemosensor for chloride based on a bisquinolinium pyridine-dicarboxamide compound

Bazany‐Rodríguez

Martı́nez-Otero

Barroso-Flores

et al. 2015

Sensors and Actuators B: Chemical

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“…Most river water has a low phosphate level, and elevated phosphate leads to water eutrophication problems. 36 In this work, we aim to screen for different MONPs and detect phosphate, arsenate and arsenite. All of the DNA samples were from Integrated DNA Technologies (IDT, Coralville, IA, USA).…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Screen of Metal Oxide Nanoparticles for DNA Adsorption, Fluorescence Quenching, and Anion Discrimination

Liu

2015

ACS Appl. Mater. Interfaces

120

122

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While DNA has been quite successful in metal cation detection, anion detectioin remains challenging due to the charge repulsion. Metal oxides represent a very important class of materials, and different oxides might interact with anions differently. In this work, a comprehensive screen of common metal oxide nanoparticles (MONPs) was carried out for their ability to adsorb DNA, quench fluorescence, and release adsorbed DNA in the presence of target anions. A total of 19 MONPs were studied, including Al2O3, CeO2, CoO, Co3O4, Cr2O3, Fe2O3, Fe3O4, In2O3, ITO, Mn2O3, NiO, SiO2, SnO2, a-TiO2 (anatase), r-TiO2 (rutile), WO3, Y2O3, ZnO, ZrO2. These MONPs have different DNA adsorption affinity. Some adsorb DNA without quenching the fluorescence, while others strongly quench adsorbed fluorophores. They also display different affinity toward anions probed by DNA desorption. Finally CeO2, Fe3O4, and ZnO were used to form a sensor array to discriminate phosphate, arsenate, and arsenite from the rest using linear discriminant analysis.This study not only provides a solution for anion discrimination using DNA as a signaling molecule, but also provides insights into the interface of metal oxides and DNA.

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“…In this technique, a mixture of target molecules (template) and a monomer are polymerized, with subsequent removal of the template which results in the formation of a cavity to allow binding of a target analyte (Kugimiya and Takei 2006). For phosphate ions, a number of molecularly imprinted polymers (MIPs) based on thiourea groups have been developed, but their application in designing phosphate biosensors is still lagging (Warwick et al 2013). However, some other analytes having a molecular weight similar to the phosphate have been recently reported to be successfully determined by these MIPs based sensors (Ratautaite et al 2014).…”

Section: Non-enzymatic Biosensorsmentioning

confidence: 99%

Recent advances in phosphate biosensors

Upadhyay

Verma

2015

Biotechnol Lett

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A number of biosensors have been developed for phosphate analysis particularly, concerning its negative impact within the environmental and biological systems. Enzymatic biosensors comprising either a single or multiple enzymatic system have been extensively used for the direct and indirect analysis of phosphate ions. Furthermore, some non-enzymatic biosensors, such as affinity-based biosensors, provide an alternative analytical approach with a higher selectivity. This article reviews the recent advances in the field of biosensor developed for phosphate estimation in clinical and environmental samples, concerning the techniques involved, and the sensitivity toward phosphate ions. The biosensors have been classified and discussed on the basis of the number of enzymes used to develop the analytical system, and a comparative analysis has been performed.

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Sensing and analysis of soluble phosphates in environmental samples: A review

Cited by 215 publications

References 71 publications

Sensitive water-soluble fluorescent chemosensor for chloride based on a bisquinolinium pyridine-dicarboxamide compound

Sensitive water-soluble fluorescent chemosensor for chloride based on a bisquinolinium pyridine-dicarboxamide compound

Comprehensive Screen of Metal Oxide Nanoparticles for DNA Adsorption, Fluorescence Quenching, and Anion Discrimination

Recent advances in phosphate biosensors

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