## Abstract The effects of five extraction solvents and their mixtures on the yield of metabolites in crude and fractionated extracts of __Annona muricata__ L. leaves were investigated by direct comparison. Extraction media were prepared using simplex centroid mixtures of ethanol, ethyl acetate, di
✦ LIBER ✦
Kinetics of separating multicomponent mixtures by nondispersive solvent extraction: Ni and Cd
✍ Scribed by Inmaculada Ortiz; Berta Galán; Fresnedo San Román; Raquel Ibáñez
- Publisher
- American Institute of Chemical Engineers
- Year
- 2001
- Tongue
- English
- Weight
- 218 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0001-1541
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The concentrations of Cd, Co, Cu, Mn, Ni, Pb, and Zn in natural and sea waters are too low to be directly determined with by flame atomic absorption spectrometry (FAAS) or graphite furnace atomic absorption spectrometry (GFAAS). Specific sample preparations are requested that make possible the deter