The use rank annihilation factor analysis (RAFA) for spectrophotometric studies of complex formation equilibria are proposed. One-step complex formation and two successive and mononuclear complex formation systems studied successfully by proposed methods. When the complex stability constant acts as an optimizing object, and simply combined with the pure spectrum of ligand, the rank of original ...

Caffeine, its physiological actions, and its metabolic fate have been of great interest to the medical profession for many years because of the therapeutic value of the drug as a respiratory and circulatory stimulant, and its wide-spread consumption in beverages. Despite this, a suitable method for the detection and quantitative determination of small amounts of caffeine in body fluids has not ...

den sind, um andere, offenbar auch leichter wieder abtrennbare Proteine zu binden. C H A R G A F F und sein Arbeitskreis2 '12 haben bei der Fraktionierung von DN-Histonen mit NaCl-Lösung ansteigender Konzentration DNS-Fraktionen von unterschiedlicher Zusammensetzung und unterschiedlichem Bindungsvermögen erhalten. Die von uns gewonnenen Beobachtungen führen zu dem gleichen Ergebnis. Herrn Direk...

The Schwartzenbach titration of calcium and magnesium has been applied principally in the field of determination of total hardness in water (1-4). Due to its particular application in this field where many contaminants are possible, Diehi, Goetz, and Hach have published a table of the principal interfering substances, their maximum tolerated concentrations, and the various inhibiting reagents w...

The objective of this study was to assess the adsorption potential of activated carbon (AC) asan adsorbent for the removal of Murexide (Mu) from aqueous solutions. The influence of variablesparameters including pH, amount of adsorbent, sieve size of adsorbent, temperature and contact timeon Mu removal was studied. Following optimization of variables, the relation between concentrations ofdye re...

OXALATE Stone powder (2-3 mg) is moistened on an ordinary glass slide with two to three drops of 20% nitric acid and is slowly heated over a small flame to dryness and then for a further 5-10 seconds but without charring. The following results may be noticed: (a) formation of a conspicuous reddish-brown froth indicating ammonium urate; (b) formation ofa flat purplish-brown layer, evidence of ur...

Sketching a proper catalytic system with supplementary attributes, containing easy separation, wide surface area, supreme loading capacity, and fantastical electronic proposes an encouraging direction for efficiently using nanostructures various applications. However, the capability to adjust nano‐measure bimetallic particles is adjustment attaining superb performance in field. Herein, environm...