Synergistic extraction of holmium(III) with 2-thenoyltrifluoroacetone and multidentate heterocyclic amines.

Synergistic effect of tris(4-isopropyltropolonato)cobalt(III) on the extraction of lanthanoid(III) with 2-thenoyltrifluoroacetone.

Synergistic enhancement of the extraction of lanthanoid(III) (Ln) with 2-thenoyltrifluoroacetone (Htta) in benzene has been found by the addition of tris(4-isopropyltropolonato)cobalt(III) (Co(ipt)3). The synergistic effect of Co(ipt)3 was ascribed to the formation of a 1:1 adduct of Ln(tta)3 with Co(ipt)3, i.e., a binuclear complex, in the organic phase. The adduct formation constant (beta s,1...

Synergistic effect of 18-crown-6 derivatives on chelate extraction of lanthanoids(III) into an ionic liquid with 2-thenoyltrifluoroacetone.

The synergistic effect of 18-crown-6 derivatives, such as 18-crown-6 (18C6), cis-dicyclohexano-18-crown-6 (DC18C6) and dibenzo-18-crown-6 (DB18C6), on the extraction of trivalent lanthanoids (Ln(3+)) into an ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, with 2-thenoyltrifluoroacetone (Htta) was investigated. The extractability of lighter Ln(3+) was enhanced by ad...

Ionic liquid synergistic cation-exchange system for the selective extraction of lanthanum(III) using 2-thenoyltrifluoroacetone and 18-crown-6.

A novel synergistic extraction system was investigated for the possible selective separation of light lanthanoids using an ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, as an extraction solvent and 2-thenoyltrifluoroacetone and 18-crown-6 as extractants. Trivalent lanthanum was efficiently extracted as a cationic ternary complex by the cation-exchange process, wh...

Effect of heterocyclic amines, vegetables, and fruits on colorectal cancer

Heterocyclic Amines: 2. Inhibitory Effects of Natural Extracts on the Formation of Polar and Nonpolar Heterocyclic Amines in Cooked Beef

The effects of natural extracts on the formation of polar (IQ, MeIQ, MeIQx, 4,8-DiMeIQx, and PhIP) and nonpolar (norharman, harman, and A C) heterocyclic amines (HAs) were examined in ground beef cooked at 200 and 210°C for 20 min. In experiment 1, the formation of MeIQx was effectively reduced by 77%, 75%, and 69%, respectively, for 1.0% pine bark extract (Pycnogenol), 1.0% Oleoresin rosemary ...