New Photometric Method for Determining Thallium with Rhodamine B
نویسندگان
چکیده
منابع مشابه
Determination of thallium(I) by flotation-spectrophotometric method using iodide and rhodamine B.
A method for the trace amount determination of Tl(I), via its preconcentration, is proposed. The method is based on the reaction of iodide, Tl(I) and Rhodamine B in a weakly acidic medium. In this process an ion-associated complex is formed, which is floated at the interface of aqueous-cyclohexane layers. Various amounts of Tl(I) by a subsequent separation and dissolution of the floated complex...
متن کاملAn improved flame-photometric method for determining calcium in serum.
Powell (1953) introduced a method for the estimation of serum calcium using the EEL flame photometer, and claimed that it gave results in good agreement with a standard titrimetric procedure. In this laboratory, both these methods were found to give low results when tested against standard sera, prepared by adding known amounts of calcium to serum completely decalcified by treatment with a cati...
متن کاملPhotometric procedure for determining esterase activity.
IN MOST OF THE ANALYTIC PROCEDURES for assaying the esterase content of biologic tissues and fluids, the extent of enzymatic hydrolysis is determined either titri.metrically, manometrically, or photometrically. In the photometric methods the alcoholic component of the substrate is such that its unesterifled form can be measured either directly as such (1-6), or indirectly as a colored derivativ...
متن کاملNew method for determining thrombin-clottable fibrinogen.
We describe a new method for determination of thrombin-clottable fibrinogen, which eliminates the systematic error caused by occlusion of other serum proteins in the fibrin clot and reduces the sensitivity to high concentrations of fibrin degradation products. Essentially, the method consists of densitometric quantitation of the fibrin band after a standard electrophoresis run of plasma, thromb...
متن کاملNew enzymatic method with tryptophanase for determining potassium in serum.
We established a simple and rapid enzymatic method for measuring potassium ion in serum by using tryptophanase (EC 4.1.99.1) purified from Escherichia coli K12 strain (E. coli K12 IFO 3301). The presence of pyridoxal 5-phosphate promotes this enzymatic reaction, and potassium and (or) ammonium ions further accelerate it, with ammonium and potassium ions providing equivalent acceleration. We eli...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1956
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.29.945a