&lt;title&gt;Optical diagnostics of toxic heavy metal ion's effect on plasma blood proteins&lt;/title&gt;

Петрова, Г. П.; Petrusevich, Yu. M.; Evseevicheva, Anastasya N.; Ten, Dmitrii I.

doi:10.1117/12.429334

Cited by 1 publication

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“…A comparison of Figs 5(a) and (b) shows that the presence of metal ions in the solution significantly reduces the rejection efficiency of BSA and Lys by 18.44% and 21.83%, respectively, which is mainly due to the destructive effect of metal ions on proteins. [49][50][51][52][53][54] Heavy metal salts, such as Cd(NO 3 ) 2 , Pb(NO 3 ) 2 and CuCl 2 , will destroy the secondary bonds of the highlevel structure of proteins, such as hydrogen bonds, disulfide bonds, salt bonds, van der Waals forces, etc., causing the spatial structure of protein molecules to change from an ordered state to a disordered stretched state. In addition, heavy metals also interfere with protein folding, reducing the steric hindrance of metal-protein complexes.…”

Section: Ftir Analysismentioning

confidence: 99%

Influence of pollutant concentration on the separation efficiency of chelating membranes for removing simultaneously metal ions and proteins from simulated industrial wastewater

Zhang

Wang

Liu

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND A novel chelating membrane was fabricated for removing simultaneously metal ions (Cd2+, Pb2+ and Cu2+) and proteins (bovine serum albumin and lysozyme) from simulated industrial effluent. The purpose of the study was to investigate the influence of pollutant concentration on the separation efficiency of the chelating membrane for pollutants. RESULTS (i) The removal of metal ions mainly relies on the adsorption capacity of the chelating membrane, and seems to be independent of the concentration of protein. (ii) The retention of proteins depends mainly on their concentration in solution. (iii) When the wastewater contains high concentration of metal ions (C = 100 mg L−1) and low concentration of proteins (C = 10 mg L−1), the chelating membrane exhibits overall poor separation performance, with a low ion removal efficiency (55–70%) and a low protein rejection rate (ca 60%). (iv) When the wastewater contains low concentration of metal ions (C = 10 mg L−1) and high concentration of proteins (C = 100 mg L−1), the chelating membrane exhibits overall excellent separation performance, with ion removal rates of higher than 90% (except for Cd2+) and protein rejection rates of higher than 90%. CONCLUSIONS The separation efficiency of the chelating membrane for metallic and organic pollutants greatly depends on the pollutant concentration in the wastewater. This study provides a theoretical basis for membrane technology for removing simultaneously heavy metals and organic pollutants in wastewater. © 2022 Society of Chemical Industry (SCI).

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Section: Ftir Analysismentioning

confidence: 99%