Solvent and Reversed-Phase Extraction Chromatographic Separation of Niobium, Zirconium, and Hafnium with Aliquat 336
نویسندگان
چکیده
منابع مشابه
Solvent extraction and separation of hafnium from zirconium using Ionquest
industries, its nuclear properties in the pure metallic form make it highly desirable for nuclear applications. Zr is highly corrosion resistant and has a high melting point (2128 K) with a low thermal neutron absorption cross-section of Zr T = 0.18 b, which is significantly smaller than that of hafnium Hf T =115 b) (Speer, 1982), an element that coexists with Zr in nature. This makes Zr ideal ...
متن کاملReactive Extraction of Propionic Acid with Aliquat 336 Dissolved in 1-Decanol and n-Dodecane
This paper deals with propionic acid extraction by Aliquat 336, a quaternary amine dissolved in ndodecane and 1-decanol. Chemical equilibrium experiments have been carried out to investigate the effect of modifier, 1-decanol on the extraction efficiency of Aliquat 336 in ndodecane at fixed initial acid concentration of 0.27 gmol/l. Extraction efficiency is determined in terms of distribution co...
متن کاملReversed-phase liquid chromatographic separation of 3',5'-cyclic ribonucleotides.
A rapid, reversed-phase "high-performance" liquid-chromatographic separation of the five naturally occurring cyclic ribonucleotides is described. The separation, optimized for the measurement of these compounds in biological samples, is short (25 min), sensitive (50-100 pmol), and requires no sample pre-concentration steps. We also report an alternative isocratic elution mode, optimized for a r...
متن کاملUltrasound-assisted solid phase extraction of nitro- and chloro-(phenols) using magnetic iron oxide nanoparticles and Aliquat 336 ionic liquid.
A novel and sensitive ultrasound-assisted solid phase extraction (UASPE) method for pre-concentration and determination of ultra-trace amounts of nitrophenols and chlorophenols in water samples was demonstrated. Four hazardous phenolic compounds in water samples were extracted and monitored by high performance liquid chromatography. The results demonstrated that in the presence of Aliquat 336 (...
متن کاملApplication of liquid-liquid extraction for the separation of zirconium from hafnium
The use of liquid-liquid extraction for the separation of zirconium from hafnium was demonstrated. Hafnium spectrographically free of zirconium was prepared in quantity on a continuous basis. High purity fractions of zirconium were also prepared.
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: 1988
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.61.4423