An arginine functionalized magnetic nano-sorbent for simultaneous removal of three metal ions from water samples

Abstract

The feasibility of using eco-friendly biodegradable arginine functionalized magnetic nanoparticle entrapped chitosan beads (AFMNPECBs) for simultaneous removal of three metal ions from water samples was evaluated under different conditions.

An optical and electrochemical sensor based on l-arginine functionalized reduced graphene oxide

“…Amino acids tend to adsorb heavy metal ions by functional groups in their structure 48 . During the accumulation step, Pb(II) ions can be gathered on the surface of the electrode due to the interaction with charged or polar functional groups on the amino acid structure, such as hydroxyl, amide, guanidinium, and the formation of an intermolecular bond with axially coordinate or other metal-amino acid species 57 .…”

“…8 b). This increase is ascribed to the availability and freedom of electron donor groups at the modifier structure 48 . Increasing pH to higher values decreases the obtained signal may be due to the competition of hydroxyl ions for interaction with Pb(II).…”

“…Although l-arginine (Arg) has been used to prepare electrochemical sensors [43][44][45][46][47] , this is the first time that RGO was functionalized with l-Arg to be used for a sensitive and selective detection of heavy metals. In the only close report, Verma et al utilized arginine functionalized magnetic NPs to remove heavy metals from water samples 48 . We believed that l-Arg could be a promising ligand to coordinate heavy metals and provide detectable optical or electrochemical signals.…”

Intensified elimination of aqueous heavy metal ions using chicken feathers chemically modified by a batch method

“…Co is an essential dietary component to humans but is also toxic and dangerous at higher concentrations [7]. It can be found at the wastewaters of nuclear power plants and is used in various industrial applications.…”

A novel catalytic kinetic method for the determination of mercury(ii) in water samples

“…We have also been interested in developing analytical methods for the determination as well as removal of various analytes and toxic species of environmental, biological and medicinal interest. 5,18,[35][36][37][38]41,42 Keeping the above explained backgrounds in mind, in the present communication, a successful attempt has been made to develop a novel, simple and precise catalytic kinetic method (CKM) for the trace level determination of Hg(II) in the aqueous samples which is based on the Hg(II) catalyzed substitution of (CN À ) in the [Ru(CN) 6 ] 4À by pyrazine (Pz). The kinetics and mechanism of this reaction has already been reported by us 43 and has now been exploited as an indicator reaction system for the CKM in the determination of Hg(II).…”