Abstract To monitor and manage hydrological systems such as brooks, streams, rivers, the use of tracers is a well-established process. Limited number potential salts, isotopes dyes, make study processes challenge. Traditional find limited due to lack multiplexed, multipoint tracing background noise, among others. In this regard, DNA based possess remarkable advantages including, environmentally...

DURING an investigation of the toxic action of beryllium salts on experimental animals a histochemical test was developed to provide information on the distribution and site of action of beryllium. The technique is reported as an example of the application of chemical methods to histological problems. The reactions of beryllium salts with dyes of the triarylmethane series have been studied by A...

Reaction schemes have been developed that lead to clusters having the topology of the PN cluster of nitrogenase. The single cubane clusters [(Tp)MFe3S4Cl3]z (M = Mo, z = 1-; M = V, z = 2-) react with PEt3 to give [(Tp)MFe3S4(PEt3)3]1+, which are reduced to the neutral edge-bridged double cubanes [(Tp)2M2Fe6S8(PEt3)4] with highly reduced (2[MFe3S4]1+) cores. Reaction of these clusters in acetoni...

Hadacidin 2 und seine Monoalkalisalze 3 wurden nach Literaturangaben dargestellt. Das nach 1. c. 1 gewonnene Produkt muß jedoch durch Extraktion mit siedendem Äther und nachfolgende Umfällung mit Chloroform/Petroläther (1 : 4) aus Acetonlösung gereinigt werden. Die IR-Spektren wurden mit Infrarotspektrometern IR-10 (4000 — 300 c m 1 , KBr-Preßlinge) und IR-11 (700 — 33 c m 1 , Nujolaufschlämmun...

Background & objectives: The import of heavy metals into various sources of drinking water supply is one of the major problems of water quality, especially in industrial areas. The aim of this study was to investigate the ability of mercury and arsenic metal pollutants to be removed from aqueous solutions using green oxide nanoparticles synthesized by green method. For this purpose, the extract...

An efficient and solvent-free protocol for the oxidation of alcohols to corresponding carbonyl compounds using iron(III) nitrate nonahydrate has been developed. ! 2007 Elsevier Ltd. All rights reserved. The oxidation of alcohols to the corresponding carbonyl compounds is one of the most important transformations in organic synthesis. There are numerous methods available in the literature and th...

A series of ammonium and tetraalkylammonium metal isothiocyanate salts of the type Q(y)[M(NCS)x] (M = Cr(III), x = 6, y = 3, Q = NH4(+), Me4N(+), Et4N(+), n-Bu4N(+); M = Mn(II), x = 6, y = 4, Q = Me4N(+); M = Mn(II), x = 5, y = 3, Q = Et4N(+); M = Fe(III), x = 6, y = 3, Q = Me4N(+), Et4N(+), n-Bu4N(+); M = Co(II), x = 4, y = 2, Q = n-Bu4N(+); M = Eu(III), Gd(III), Dy(III), x = 6, y = 3, Q = Bu4...