Cadmium is one of the most hazardous metals in environment, even when present at very low concentrations. This study reports systematic development Kenaf fiber biochar as an adsorbent for removal cadmium (Cd) (II) ions from water. The was aided by optimization tool. Activated prepared using physicochemical activation method, consisting pre-impregnation with NaOH and nitrogen (N2) pyrolysis. inf...

In this study, a ZnO@Ag2O@Fe3O4 nanocomposite as an innovative magnetic solid phase extraction agent was introduced. The structural and morphological properties of the as-prepared nano-sorbent were characterized using X-ray diffraction analysis, Fourier transform infrared spectroscopy, field emission scanning electron microscopy and nitrogen adsorption–desorption techniques. The synthesized mag...

A hexakis[2,3,9,10,16,17,23,24-octa(butyloxy)phthalocyaninato] samarium(III)-cadmium(II) sextuple-decker complex (Pc*)Sm(Pc*)Cd(Pc*)Cd(Pc*)Cd(Pc*)Sm(Pc*) (1) with six phthalocyanine ligands bridged by two samarium(III) and three cadmium(II) ions, representing the largest stacked tetrapyrrole metal molecule in the sandwich series in terms of the tetrapyrrole-deck number, has been synthesized and...

the effects of cadmium and lead on human erythrocyte acetylcholinesterase activity were studied. blood used in this study was obtained from 24 healthy individuals, then after hemolysation, treated with 3 various concentrations of cadmium and lead. a strong inhibition of acetylcholinesterase was noted in treated samples by cadmium and lead. the remaining activity in the case of lead, the remaini...

Background: Water pollution is an important environmental problem, undoubtedly, the presence of toxic heavy metals forms the main source of water contamination. Sorption characteristics of polyurethane foams modified with bis (2-ethylhexyl)phosphoric acid (DEHPA) for the removal of zinc, lead and cadmium ions from contaminated solutions were investigated. Methods: Operating variables, such as ...

The nature of the specific electrical reaction of plants to the action of different factors, such as temperature, light, electrical current and chemical agents, is an important problem in plant physiology. A light signal causes an electrical response of a specific nature. In general, the photoreaction depends on photosynthesis and the transport of ions across membranes in the chloroplasts and a...

Sesame leaf and stem, as a kind of useless agricultural waste, was used as a sort of low-cost biosorbent for the removal of cadmium ions from aqueous solutions in batch and continuous modes. The biomass was characterized by Fourier transform infrared spectroscopy, scanning electron microscope and energy-dispersive X-ray analysis before and after adsorption. There were hydroxyl group, carboxyl g...

A novel biosensor based on immobilised whole cell Chlorella vulgaris microalgae as a bioreceptor and interdigitated conductometric electrodes as a transducer has been developed and tested for alkaline phosphatase activity (APA) analysis. These sensors were also used for the detection of toxic compounds, namely cadmium ions, in aquatic habitats. Algae were immobilised inside bovine serum albumin...

This study deals with the influence of cadmium on the structure and function of ferredoxin:NADP(+) oxidoreductase (FNR), one of the key photosynthetic enzymes. We describe changes in the secondary and tertiary structure of the enzyme upon the action of metal ions using circular dichroism measurements, Fourier transform infrared spectroscopy and fluorometry, both steady-state and time resolved. ...