Biocomposite application for the phosphate ions removal in aqueous medium

<p>Phosphates anions are important molecules for the society in general and involved for example in medicine or agriculture. Detection of them with chemosensor is a challenge due to the chemical properties of the anions. In this context, an exquisite chemosensor would have exquisite affinity, selectivity and low detection limit. Here we address this problem using a simple fluorescent indicator displacement assay (FID) with only commercially available chemicals used to probe phosphate ions in aqueous medium using cerium ammonium nitrate (CAN). The monomeric homoleptic complex detects phosphate ions in low millimolar concentrations either spectrophotometrically or with the naked-eye with high selectivity over other anions and high affinity. To our knowledge, this is the first description of a simple sensitive, selective and high affinity cerium-based chemosensor for the fluorescent selective naked-eye detection of phosphate in aqueous medium. It proved useful for the detection of phosphate in Coca Cola. </p>

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A biomimetic cerium-based biosensor for the direct visual detection of phosphate under physiological conditions

Chemical Communications ◽

10.1039/c9cc04840e ◽

2019 ◽

Vol 55 (99) ◽

pp. 14894-14897

Author(s):

Thibaud Rossel ◽

Marc Creus

Keyword(s):

Aqueous Medium ◽

Visual Detection ◽

Physiological Conditions ◽

Neutral Ph ◽

Phosphate Ions ◽

Displacement Assay

An indicator displacement assay (IDA) was used to probe phosphate ions in an aqueous medium at neutral pH using a dinuclear cerium based complex [Ce2(HXTA)]3+.

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Trifluoroacetic acid catalyzed thiophenylmethylation in aqueous medium

ChemSpider Synthetic Pages ◽

10.1039/sp724 ◽

2014 ◽

Author(s):

Rohit Sharma

Keyword(s):

Aqueous Medium ◽

Trifluoroacetic Acid ◽

Acid Catalyzed

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Rheological behaviour of the condensed suspension of fluorinated montmorillonite “rassoul” particles in aqueous medium

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:2005123062 ◽

2005 ◽

Vol 123 ◽

pp. 341-344

Author(s):

A. Khaldoun ◽

F. González-Caballero ◽

J. G. López-Durán ◽

N. Mahrach ◽

M. L. Kerkeb

Keyword(s):

Aqueous Medium ◽

Rheological Behaviour

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Changes of Magnetic Characteristics of iron Oxides and Hydroxides in Aqueous Medium

Mineralogical Journal ◽

10.15407/mineraljournal.39.01.046 ◽

2017 ◽

Vol 39 (1) ◽

pp. 46-52

Author(s):

T. SAVCHENKO ◽

◽

A. GRECHANOVSKY ◽

A. BRIK ◽

N. DUDCHENKO

Keyword(s):

Aqueous Medium ◽

Iron Oxides ◽

Magnetic Characteristics

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Biomimic Oxidation Kinetics of Folic Acid by Amine μ-peroxo Complex in Aqueous medium

Journal of Chemistry and Chemical Sciences ◽

10.29055/jccs/530 ◽

2017 ◽

Vol 7 (12) ◽

pp. 1196-1201

Author(s):

S. Ignatius Arockiam

Keyword(s):

Folic Acid ◽

Aqueous Medium ◽

Oxidation Kinetics ◽

Peroxo Complex ◽

Kinetics Of

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Ground water quality of selected areas of Punjab and Sind Provinces, Pakistan: Chemical and microbiological aspects

10.31221/osf.io/wns25 ◽

2019 ◽

Author(s):

Chem Int

Keyword(s):

Ionic Concentration ◽

Chloride Ions ◽

Potassium Ions ◽

Ammonium Ions ◽

High Concentration ◽

Phosphate Ions ◽

Sodium Magnesium ◽

Very High ◽

Microbiological Aspects

The assessment of groundwater is essential for the estimation of suitability of water for safe use. An attempt has been made to study the groundwater of selected areas of Punjab (Sheikhupura & Sahiwal) and Sindh (Sindh, Jawar Dharki and Dharki), Pakistan. The results indicate that pH, color and odor were all within limits of WHO that is pH ranges 6.5–8.5, colorless and odorless, respectively. The high values of suspended solids were observed in the Sindh-1 and Dharki samples. Microbiologically only Sahiwal and Jawar Dharki were found fit for drinking purpose. Trace metals analysis of Sheikhupura-1 and Sindh-1 showed that values do not fall within limits of WHO for Iron. The ionic concentration analysis showed that high bicarbonate (HCO3-), ions are present in the samples of Sahiwal and Dharki; Sindh-1 and Jawar Dharki samples showed very high concentration for chloride ions, all samples were satisfactory level for sulphate (SO42-), sodium, magnesium and phosphate ions except samples of Sindh-1 and Jawar Dharki. High concentration of calcium and potassium ions was observed in samples of Sindh-1, while all other samples were found fit for drinking purposes in respect of nitrate, nitrite and ammonium ions. The high concentration of Fluoride was found only in Sheikhupura-2 samples.

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Surface interaction of sweet potato peels (Ipomoea batata) with Cd(II) and Pb(II) ions in aqueous medium

10.31221/osf.io/gfdht ◽

2019 ◽

Author(s):

Chem Int

Keyword(s):

Aqueous Medium ◽

Sweet Potato ◽

Adsorption Process ◽

Low Cost ◽

Correlation Coefficients ◽

Order Kinetic ◽

Thermodynamic Evaluation ◽

Dissociative Mechanism ◽

Pseudo Second Order ◽

Potato Peels

The removal of Cd(II) and Pb(II) ions from aqueous medium was studied using potato peels biomass. The adsorption process was evaluated using Atomic Absorption Spectrophotometer (AAS). The Vibrational band of the potato peels was studied using Fourier Transform Infrared Spectroscopy (FTIR). The adsorption process was carried out with respect to concentration, time, pH, particle size and the thermodynamic evaluation of the process was carried at temperatures of 30, 40, 50 and 60(0C), respectively. The FTIR studies revealed that the potato peels was composed of –OH, -NH, –C=N, –C=C and –C-O-C functional groups. The optimum removal was obtained at pH 8 and contact time of 20 min. The adsorption process followed Freundlich adsorption and pseudo second-order kinetic models with correlation coefficients (R2) greater than 0.900. The equilibrium adsorption capacity showed that Pb(II) ion was more adsorbed on the surface of the potato peels biomass versus Cd (II) ion (200.91 mg/g > 125.00 mg/g). The thermodynamic studies indicated endothermic, dissociative mechanism and spontaneous adsorption process. This study shows that sweet potato peels is useful as a low-cost adsorbent for the removal of Cd(II) and Pb(II) ions from aqueous medium.

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