We have developed a highly stable supported liquid membrane based on ionic liquids (ILs) for the separation of rare-earth metals, employing N,N-dioctyldiglycol amic acid as a mobile carrier. The quantitative transport of Y and Eu through the membrane was successfully attained, and separation from metal impurities, Zn, was efficiently accomplished. A membrane stable enough for long-term operatio...

A simple and rapid method has been developed for the simultaneous separation and semi-quantitative estimation of formimino-glutamic and urocanic acids in urine. The urinary excretion of these compounds in a group of normal subjects and in a number of illustrative cases has been determined. In view of current opinion that it is the total of these two metabolites of histidine which is the signifi...

A rapid comprehensive thin-layer chromatographic separation of the major plasma lipid classes on commercial silicic acid glass fiber paper is described. For screening purposes, oxidized fractions are rapidly visualized for qualitative interpretation. Standard colorimetric procedures for each lipid class are per­ formed upon the migration areas cut from the strips. This provides quantitative mea...

Although the vast majority of refugees have suffered trauma and extended separation from their families in exile, little is known about the interactions between these two types of experience. The qualitative and quantitative analyses of data gathered from 113 refugees from Latin America and Africa suggest that the joint occurrence of trauma and separation has a significant impact on emotional d...

It has been shown that CyMe4-BTPhen-functionalized silica-coated maghemite (γ-Fe2O3) magnetic nanoparticles (MNPs) are capable of quantitative separation of Am(III) from Eu(III) from HNO3 solutions. These MNPs also show a small but significant selectivity for Am(III) over Cm(III) with a separation factor of around 2 in 4 M HNO3. The water molecule in the cavity of the BTPhen may also play an im...

The analytical potential of a weak-base macroreticular anion-exchange resin for the quantitative separation of metal ions in thiocyanate media is investigated and demonstrated. Distribution data are given for the sorption of some 25 metal ions from aqueous mixtures of potassium thiocyanate (1.0M or less) and 0.5M hydrochloric acid. The magnitude of the distribution data suggests many possible s...

In this study, a new silica gel based adsorbent was fabricated and its ability in separation and quantification of alkanes mixture was investigated. Silica gel (SiO2) is a polar absorbent which is mainly used to separate polar compounds. Also, the carbon materials such as activated carbon and recently carbon nanotube (CNTs), have been widely used for separation of nonpolar materials. Carbon nan...

A systematic and quantitative methodology for synthesis of gas separation networks is being developed to allow generation of effective and economic separation schemes. Synthesis includes selection of appropriate separation methods, e.g. absorption, lowtemperature separation processes and membrane permeation. In the screening step of the methodology, a quick assessment of alternative separation ...

To realize efficient homogeneous electrophoretic immunoassays, we introduce discontinuous polyacrylamide gels that enable quantitative assay completion in separation lengths as short as 350 mum in <10 s. The discontinuous cross-linked gels reduce the required electrophoretic separation lengths and thereby significantly reduce the required applied electrical potentials needed to achieve 100's V/...