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US 4,683,042 AGranted
Method and apparatus for continuous annular electrochromatography
AssigneeThe United States of America as represented by the United States Department of Energy
InventorCharles D. Scott
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Abstract
Separation of complex mixtures and solutions can be carried out using a method and apparatus for continuous annular electrochromatography. Solutes are diverted radially by an imposed electrical field as they move downward in a rotating chromatographic column.
Claims16
A method for separation of solutes in an aqueous sample, comprising the steps of:
- (a) imposing an electrical potential gradient radially through a rotatable annulus comprised of an adsorbent material, said annulus having a first and a second end;
- then
- (b) introducing, at a predetermined point at said first end of said annulus, a fluid sample comprising at least one separable constituent while continuously rotating said annulus, such that said predetermined point is stationary relative to the rotating annulus;
- and thereafter
- (c) eluting said sample from said second end of said annulus such that said constituent is collected at said second end at a radial position r which is determined as a function of r.sub.f, .theta., V.sub.e and .omega., where
- .theta.=angular displacement of said constituent in said annulus;
- r.sub.f =distance of said predetermined point from the center of said annulus;
- V.sub.e =electrophoretic mobility of said constituent in said adsorbent material;
- and
- .omega.=rotational speed of said annulus.
7 more elements
Apparatus for annular electrochromatography, comprising:
- (a) a rotatable annulus comprised of an adsorbent material, said annulus having a first and a second end;
- (b) means for rotating said annulus;
- (c) means for imposing an electrical potential gradient radially through said annulus;
- (d) means for introducing, at a predetermined point at said first end of said annulus, a feed stream comprising at least one separable constituent, said predetermined point being stationary relative to rotation of said annulus;
- and
- (e) means for collecting a desired fraction from said second end of said annulus at a radial position which is determined as a function of r.sub.f, .theta. and .omega., where
- .theta.=angular displacement of said constituent in said annulus;
- r.sub.f =distance of said predetermined point from the center of said annulus;
- V.sub.e =electrophoretic mobility of said constituent in said adsorbent material;
- and
- .omega.=rotational speed of said annulus.
8 more elements
Dependencies are inferred from the claim text.