An attempt has been made in this review to provide some insights into the possible adsorption mechanisms of hexavalent chromium onto layered double hydroxides-based adsorbents by critically examining the past and present literature. Layered double hydroxides (LDH) nanomaterials are typical dual-...

Inhomogeneous samples of n-type CdSxSe1−x(0.2 ≲ x

The formation of cadmium sulfoselenide from cadmium sulfide and selenium has been studied using differential scanning calorimetry (DSC). The formation of a solid solution begins following the melting of selenium and is seen as a broad endothermic peak centered around 320°C. The influence of pre...

We report measurements of dynamic (a.c.) electrical conductivity in borosilicate glasses doped with cadmium sulfoselenide and copper and silver iodides in a wide temperature range below the glass transition temperature Tg and at different frequencies. The concentration of the mobile dopant ions ...

A simple, convenient and low cost chemical synthesis route has been used to deposit nanostructured cadmium sulfide, selenide and sulfoselenide thin films at room temperature. The films were deposited on glass substrates, using cadmium acetate as cadmium ion and sodium selenosulfate/thiourea as a...

Acarbose, a potent α-glucosidase inhibitor, is widely used as an oral anti-diabetic drug for the treatment of the type 2, non-insulin-dependent diabetes. In this work, a gel type strong acid cation exchange resin 001×4 was applied to isolate acarbose from fermentation broth. It was demonstrate...

N-nitrosodimethylamine (NDMA) precursors consist of a positively charged dimethylamine group and a non-polar moiety, which inspired us to develop a targeted cation exchange technology to remove NDMA precursors. In this study, we tested the removal of two representative NDMA precursors, dimethyla...

A multi-step process was developed for microbial d-lactic acid purification, followed by poly-d-lactic acid (PDLA) synthesis via azeotropic polycondensation process. Several anion exchange resins were screened for their binding capacity using model lactic acid solutions. Amberlite® IRA67 (weak b...

Softening of beet sugar juices using the weak cation exchange resin Lewatit® S 8528, both in hydrogen and sodium form has been studied. After analyzing the influence of the main operating parameters on decalcification efficiencies through a Taguchi approach, experimental runs were carried out at...

A novel approach for green and simple solid-phase extraction of ionizable analytes using cation-exchange resin particles packed in a rotating cotton‐based disk has been developed and utilized for the chemiluminescence determination of ofloxacin in biological fluids (serum and urine). The use of...

The batch method was applied in order to determine the influence of phase contact time, solution pH and temperature as well as HCl concentration on nitroso-R-salt (NRS) deposition on the strongly basic anion-exchangers Amberlite IRA-402 and Amberlite IRA-958. The equilibrium sorption of NRS from...

Currently, the search for non-biological materials that are able to oxidize glucose with good electrochemical response is very desired. In this work, we describe the use of a cation-exchange resin (Amberlite IR 120H) for Cu(II) ions incorporation and its application for a sensitive non-enzymatic...

Iron element is one of the main impurities in wet-process phosphoric acid and it has a significant impact on the subsequent phosphorus chemical products. This paper studied the feasibility of using Sinco-430 cation exchange resin for iron removal from phosphoric acid. The specific surface area a...

12α- and 12β-Fumitremorgin C (1 and 2) were prepared from the N-prolyl-7-methoxy-β-carboline 4, an intermediate to the synthesis of fumitremorgin B.

Total synthesis of the title compounds is described. The key intermediate, dehydro-pentacyclic 13, is prepared in a sequence involving Pictet-Spengler reaction and DDQ oxidation. The key step in the synthesis was the dihydroxylation of 13 to afford the cis-diol 54, which was performed by direct ...

Fumitremorgin C and verruculogen are mycotoxins produced by heat-resistant Neosartorya fischeri. Easy and fast monitoring of their production by selective and sensitive analytical methods is crucial for ensuring postharvest quality of fruit, food safety, and thus human health and well-being. A s...

A total synthesis of a tremorgenic mycotoxin, fumitremorgin B is described.

Total synthesis of fumitremorgin B, one of the potent tremorgic mycotoxins, was achieved in 7 steps.

SummaryIt has been demonstrated in a rabbit reticulocyte system that phenomycin selectively blocks the initiation of globin synthesis. The N-terminal incorporation of valine or methionine is more markedly inhibited by the antibiotic than the total incorporation. The 80S initiation complex is acc...

Complexes of atropine, homatropine, scopolamine, and ipratropium with cyclodextrins were investigated by NMR and capillary electrophoresis. It has been demonstrated that tropane alkaloids form complexes with β- and γ-cyclodextrins of 1:1 stoichiometry. NMR measurements indicate the formation o...