Selective Extraction of Calcium on Tri-n-butyl Phosphate Plasticized Selective Extraction of Calcium on Tri-n-butyl Phosphate Plasticized Polyurethane Foam for Its Spectrophotometric Determination in Glass and Ceramics

Mondal, Jayanta; Kundu, Dipali

doi:10.2116/analsci.21.1491

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…Thus, the excellent properties of the flexible open-cell PUF of polyether type impregnated with TBP allowed quantitative separation of silver, gold, bismuth, cadmium, cobalt, chrome, copper, mercury, nickel, lead, palladium, tin, tantalum, thorium (Tofan et al 1995) and calcium (Mondall and Kundu 2005) and the concentration of iron (Bîlbă et al 1998a,b) and gallium from chloride media (Tofan et al 2007). Thus, the experiments carried out on a column filled with PUF loaded with TBP indicated the quantitative retention of Fe(III) (99.3-99.9%) from hydrochloric solutions (4 m) with an initial concentration of 5.6-39.2 mg Fe(III)/l.…”

Section: Sorbents Based On Loaded Pufsmentioning

confidence: 99%

Advances in preconcentration/removal of environmentally relevant heavy metal ions from water and wastewater by sorbents based on polyurethane foam

Teodosiu

Wenkert

Tofan

et al. 2014

Reviews in Chemical Engineering

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Advances in preconcentration/removal of environmentally relevant heavy metal ions from water and wastewater by sorbents based on polyurethane foamAbstract: An increased interest in the removal of heavy metal ions from aqueous media is encountered due to their toxicity and negative impacts on ecosystems, human health and economic activities. A variety of processes may be used for the removal of heavy metal ions from water and wastewater, such as chemical precipitation, ion exchange, adsorption, membrane processes, etc. However, the removal efficiencies of heavy metals by adsorption depend on several factors such as initial loads of heavy metals in the influent, purpose of treatment (drinking/industrial water production, wastewater treatment for disposal or recycling), costs of the overall process, and properties and conditions for regeneration of the sorbent materials. In this context, the use of polyurethane foams as heavy metal ion sorbents is of a special interest because they provide versatile applications in heavy metal effluent management. This study reviews relevant published researches that are concerned with new sorbents based on polyurethane foams applied in batch and dynamic systems for separation and/or preconcentration of heavy metal ions in environmental aqueous media. This review is divided into the following sections: synthesis of polyurethane foams; physical and chemical properties of polyurethane foams; preconcentration of pollutant metal ions from environmental aqueous media by different types of polyurethane foam (untreated, loaded, reacted and composite polyurethane foams); the applicability of sorbents based on polyurethane foams for water and wastewater treatment; comparison of sorbents based on polyurethane foam with other sorbents for heavy metal ion removal.

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Section: Sorbents Based On Loaded Pufsmentioning

confidence: 99%

Advances in preconcentration/removal of environmentally relevant heavy metal ions from water and wastewater by sorbents based on polyurethane foam

Teodosiu

Wenkert

Tofan

et al. 2014

Reviews in Chemical Engineering

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“…For example, Mondal31 utilized the spectrophotometric method to determine calcium through the chelation between CCA and Ca 2+ ions by measuring the absorbance changes. Unfortunately, it is still difficult to achieve the high-throughput detection for the medical analysis of Ca 2+ ions in biological media like blood.…”

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confidence: 99%

A high-throughput fluorimetric microarray with enhanced fluorescence and suppressed “coffee-ring” effects for the detection of calcium ions in blood

Ding

Jiang

Qiao

et al. 2016

Sci Rep

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A rapid, ultrasensitive, and high-throughput fluorimetric microarray method has been developed using hydrophobic pattern as the microarray substrate and 3-aminopropyltriethoxysilane-coupled carboxylic acid calcium (APS-CCA) as the fluorescent probes for sensing Ca2+ ions in blood. The hydrophobic pattern of the developed Ca2+ analysis microarray could largely suppress the “coffee-ring” effects to facilitate the better distribution density of testing microspots toward the high-throughput detections, and especially prevent the cross-contamination of the multiple samples between adjacent microspots. Moreover, the use of APS matrix could endow the CCA probe the enhanced environmental stability and fluorescence intensity, which is about 2.3-fold higher than that of free CCA. The interactions between APS-CCA and Ca2+ ions were systematically characterized by UV-vis and fluorescence measurements including microscopy imaging. It was demonstrated that the fluorimetric microarray could display the strong capacity of specifically sensing Ca2+ ions with the minimal interferences from blood backgrounds. Such an APS-CCA-based fluorimetric microarray can allow for the analysis of Ca2+ ions down to 0.0050 mM in blood, promising a highly sensitive and selective detection candidate for Ca2+ ions to be applied in the clinical laboratory.

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“…As a visible azo dye, calconcarboxylic acid (CCA) is optimally excited at 419 nm, and has an emission maximum center around 458 nm (Supporting Information Fig. 1), which has been widely applied in the spectrophotometric determination of Ca 2+ and Al 3+ . In this study, CCA was first introduced to specifically detect gel‐separated phosphoproteins in the presence of Al 3+ through fluorescent quenching.…”

mentioning

confidence: 99%

A new fluorescent quenching method for the determination of phosphoproteins by using calconcarboxylic acid

Zhu

Shen

et al. 2015

Electrophoresis

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A fluorescent quenching detection method for phosphoproteins in SDS-PAGE by using calconcarboxylic acid (CCA) was described. In this method, the fluorescence intensity of CCA was greatly increased with the presence of Al(3+) in the gel background, while in zones where phosphoproteins are located this intensity was absent because of fluorescence quenching phenomenon through the formation of CCA-Al(3+) -phosphoprotein appended complex. Approximately 4-8 ng of phosphoproteins can be selectively detected within 1 h (1D SDS-PAGE), which is similar to that of the most commonly used Pro-Q Diamond stain. The specificity of this novel technique for phosphoproteins was confirmed by dephosphorylation, Western blot, and LC-MS/MS analysis, respectively. Furthermore, to better understand the newly developed method, the detection mechanism of CCA stain was explored by fluorescent spectrometry. According to the results, it is believed that CCA stain may provide a new choice for selective, economical, MS compatible, and convenient visualization of gel-separated phosphoproteins.

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Selective Extraction of Calcium on Tri-n-butyl Phosphate Plasticized Selective Extraction of Calcium on Tri-n-butyl Phosphate Plasticized Polyurethane Foam for Its Spectrophotometric Determination in Glass and Ceramics

Cited by 7 publications

References 19 publications

Advances in preconcentration/removal of environmentally relevant heavy metal ions from water and wastewater by sorbents based on polyurethane foam

Advances in preconcentration/removal of environmentally relevant heavy metal ions from water and wastewater by sorbents based on polyurethane foam

A high-throughput fluorimetric microarray with enhanced fluorescence and suppressed “coffee-ring” effects for the detection of calcium ions in blood

A new fluorescent quenching method for the determination of phosphoproteins by using calconcarboxylic acid

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