Indirect spectrophotometric determination of fluoride by FIA using arsenazo III-uranium complex.
نویسندگان
چکیده
منابع مشابه
Analytical .use of Arsenazo Iii Determination of Thorium, Zirconium, Uranium and Rare Earth Elements
The reagent arsenazo III (1,8-dihydroxynaphthalene-3,6-disulphonic acid-2,7-bis[(azo2)-phenylarsonic acid]) gives marked colour reactions with a number of elements. Anions affect the reaction only to a slight degree and it is possible to work at low pH values; the reaction is very sensitive and the compound can thus be used for the photometric determination of Th, Zr, I-If, U, rare earths, and ...
متن کاملIndirect determination of uranium by the on-line reduction and fluorimetric detection of cerium(III).
A novel flow injection method has been developed for the indirect determination of uranium by the on-line reduction and subsequent fluorimetric detection of cerium(III). A sample solution containing uranium(VI), prepared as a sulfuric acid solution, was injected into a sulfuric acid carrier solution and passed through a column packed with metal bismuth to reduce uranium(VI) to uranium(IV). The ...
متن کاملIndirect spectrophotometric determination of some catecholamine drugs
Catecholamine drugs are aromatic vic-diols in which both the 3or 4-position is unsubstituted and these positions are not sterically blocked. Epinephrine(EP) or adrenaline(I) and norepinephrine(NE) or noradrenaline (II) are catecholamine drugs that are widely used in the treatment of allergic emergencies, status asthmatics, bronchial asthma, ventricular bradycardia, cardiac arrest, glaucoma, and...
متن کاملSpectrophotometric determination of reaction stoichiometry and equilibrium constants of metallochromic indicators. II. The Ca2+-arsenazo III complexes.
The analytical method described in the preceding article was applied to spectrophotometric Ca2+-titrations of the metallochromic indicator arsenazo III (Ar). At various reactant concentrations it was determined that Ar forms 1:1,1:2 and 2 : 1 complexes with calcium. The equilibrium constants and extinction coefficients at 602 nm were determined. Corrected to zero ionic strength at 293 K and pH ...
متن کاملSimultaneous spectrophotometric determination of uranium and thorium by flow injection analysis using selective masking.
A flow injection system for the simultaneous determination of uranium and thorium has been developed by using selective masking and a spectrophotometric detector with two flow cells aligned with the same optical path. The injected sample solution was first mixed with a reagent solution containing Chromazurol S (CAS) and cetyltrimethylammonium chloride (CTMAC), and the total absorbance of uraniu...
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: BUNSEKI KAGAKU
سال: 1989
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.38.9_424