spectrophotometric studies ot vanadium(iii) ion complexes th p-sulfonatocalixf 41 acme in aqueous solution

Spectrophotometric Studies ot Vanadium(III) Ion Complexes th p-Sulfonatocalixf 41 acme In Aqueous Solution

Spectropholornetrie technique is used to evaluate binding of the vanadium(1U) ion to a water solublecaruc[4] arene molecule in aqueous solution. On the basis of the calculated value formation constant at25rC.we found that the eomplexation of this metal on is very favored towards 25, 26, 27, 2Stetrahydroxy-5, 11, 17, 23-tetnmulphonalic acid-calix[0]areneGaussian 03 package.

Thermodynamic study of dioxovanadium (V) Complexes with p-sulphonato-calix [6] arene in aqueous solution

Batch experimental studies of Hg(II) ion removal from aqueous solution using seven synthetic polymers

In this work application of seven synthetic polymers as adsorbents for the removal of Hg(II) from aqueous solution was studied. The equilibrium studies are systematically carried out in a batch process, covering various process parameters that include agitation time, adsorbent dosage, and pH of the aqueous solution. Variations of Hg(II) concentration in solution have been studied through measur...

thermodynamic study of dioxovanadium (v) complexes with p-sulphonato-calix [6] arene in aqueous solution

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Azorubin in aqueous and methanolic solutions; spectrophotometric studies.

The original quantitative procedure for bilirubin of Van den Bergh (1) was based upon comparison of the color of an ether extract, first with ferric thiocyanate solutions and later with cobalt sulfate standards. This inaccuracy of standardization has been eliminated by the availability of purified bilirubin in both solid form and in comparatively stable solutions, and by the adaptation of the p...

Spectroscopic studies of solutes in aqueous solution.

Absorption and fluorescence characteristics of aqueous solutions of salts, sugars, and amino acids were studied using UV-vis spectroscopy and spectrofluorometry. Motivation stemmed from unanticipated absorption spectral and fluorescence features of the "exclusion zone" seen adjacent to various hydrophilic surfaces. Those features implied a structure distinct from that of bulk water (Adv. Colloi...