Different structural chemistries resulting from the Pb2+ lone-pair electrons in the PbMO3 perovskites are reviewed. The Pb2+ lone-pair electrons enhance the ferroelectric transition temperature in PbTiO3, stabilize vanadyl formation in PbVO3, and induce a disproportionation reaction of CrIV in PbCrO3. A Pb2+ + NiIV = Pb4+ + NiII reaction in PbNiO3 stabilizes the LiNbO3 structure at ambient pres...

Heavy metals transport to groundwater relies on the characteristics of soil, such as carbonate and clay minerals, organic matter content, soil pH, some other factors. Most heavy in calcareous soils are precipitated metal minerals; consequently, their is not anticipated. Therefore, current study focused impacts calcium presence adsorption lead (Pb) copper (Cu) using batch column experiments. To ...

Biodegradable and eco-friendly composite adsorbent was synthesized from modified jute fiber gelatin evaluated its efficacy in removing cadmium (Cd2+), lead (Pb2+), chromium (Cr3+) ions an aqueous solution. The prepared sample characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray analyses, which revealed that successfully intercalated ...

Lead (Pb2+) poisoning causes hypertension, but little is known regarding its acute effects on cardiac contractility. To evaluate these effects, force was measured in right ventricular strips that were contracting isometrically in 45 male Wistar rats (250-300 g) before and after the addition of increasing concentrations of lead acetate (3, 7, 10, 30, 70, 100, and 300 microM) to the bath. Changes...

Inorganic lead ion in micromolar concentrations inhibits Electrophorus electroplax microsomal (Na+ + K+)-adenosine triphosphatase ((Na+ + K+)-ATPase) and K+-p-nitrophenylphosphatase (NPPase). Under the same conditions, the same concentrations of PbCl2 that inhibit ATPase activity also stimulate the phosphorylation of electroplax microsomes in the absence of added Na+. Enzyme activity is protect...

The lead(II) complexes of 2,2'-iminodiethanol (H2Dea)Pb2(Dea)(N03)2(DMF), Pb2(HDea)2Cl2 and [Pb2Br6](H3Dea)2(DM F = N,N-dimethylformamide) have been synthesized from the com­ ponents and characterized by X-ray crystallography. Both mono(HDea) and doubly (Dea) deprotonated HN (CH2CH2OH)2 are coordinated via oxygen and nitrogen atoms in Pb2(D ea)(N 03)2(DM F) and Pb2(HDea)2Cl2. The nitrate comple...

The aim of this research was to develop a simple, selective and sensitive aptasensor for detection of Pb2+ based on hairpin structure of complementary strand (CS) of aptamer (Apt). Screen printed carbon electrode (SPCE) was electrodeposited by gold nanoparticles to be used as the substrate for the immobilization of Apt-CS. Moreover, gold nanoparticles (AuNPs) and thionine were added to increase...

A novel ion-imprinted polymer, lead ion-imprinted micro-beads with combination of two functional monomers, was synthesized using the W/O/W polymerization method. Two functional monomers, 1,12-dodecanediol-O,O'-diphenyl-phosphonic acid (DDDPA) and 4-vinylpyridine, were used to form a suitable construction with micro-pores fitting the template and recognition sites. The effects of adsorbent dosag...

In this study, reduced graphene oxide (rGO) was electrochemically deposited on the surface of screen-printed carbon electrodes (SPCE) to prepare a disposable sensor for fast detection of Pb2+ in foods. The SEM images showed that the rGO was homogeneously deposited onto the electrode surface with a wrinkled nanostructure, which provided 2D bridges for electron transport and a larger active area ...