temperature control for lc columns - American Chemical Society

The versatile controller can be used with other heating elements and probes for a variety of laboratory appli cations. bas BIOANALYTICAL. SYSTEMS INC...
1 downloads 3 Views 2MB Size
(6) Clarke, B. L.; Wooten, L. Α.; Luke, C. L. Ind. Eng. Chem. Anal. Ed. 1936,8, 411. (7) Vassos, B. H.; Hirsch, R. F.; Letterman, H. Anal. Chem. 1973,45, 792. (8) Mark, Η. Β. "Abstracts of Papers," 162nd National Meeting of the American Chemical Society, Washington, D.C., September 1971. (9) Torsi, G. Ann. Chim. Rome 1977,67, 557. (10) Torsi, G.; Desimoni, E.; Palmisano, F.; Sabbatini, L. Anal. Chim. Acta 1980, 124,143. (11) Cheek, G. T.; Nelson, R. F. Anal. Lett. 1978,11, 393. (12) Morrison, G. H.; Freiser, H. "Solvent Extraction in Analytical Chemistry"; In­ terscience: New York, 1967. (13) Pohl, F. A. Z. Anal. Chem. 1953,139, 241. (14) Pohl, F. A. Z. Anal. Chem. 1953,139, 423. (15) Pohl, F. A. Z. Anal. Chem. 19SZ.141, 81. (16) Chichilo, P.; Sprecht, A. W.; Whittaker, C. W. J. Assoc. Off. Anal. Chem. 1955,38,903. (17) Silvery, W. D.; Brennan, R. Anal. Chem. 1962,34,784. (18) Pan, S. C. Sep. Sci. 1974,9,227. (19) Ross, W. D.; Sievers, R. E. Talanta 1968, 15, 87. (20) Black, M. S.; Browner, R. F. Anal. Chem. 1981,53,249. (21) Kuznetsov, V. I.; Seryakova, I. V. Zh. Anal. Khim. 1959,14,161. (22) Fujinaga, T.; Kuwamoto, T.; Nakayma, E. Talanta, 1969,16,1225. (23) Flaschka, Η. Α.; Barnes, R.; Paschal, D. Anal. Lett. 1972,5,253. (24) Vanderborght, Β. Μ.; Van Grieken, R. E. Anal. Chem. 1977,49, 311. (25) Watanabe, H.; Goto, K.; Taguchi, S.; McLaren, J. W.; Berman, S. S.; Russell, D. S. Anal. Chem. 1981,53,738. (26) Luke, C. L. Anal. Chim. Acta 1968, 47,237. (27) Puschel, R. Talanta 1969,16, 351. (28) Watanabe, H.; Berman, S.; Russell, D. S. Talanta 1972,19,1363. (29) Blount, C. W.; Leyden, D. E.; Thom­ as, T. L.; Guill, S. Anal. Chem. 1973,45, 1045. (30) Noakes, J. E.; Harding, J. L.; Spann­ ing, J. D. 8th Annual Conference of the Marine Technology Society, Preprints, ρ 415. (31) Stokes, W. M.; Fish, W. Α.; Hickey, F. C. Anal. Chem. 1955,27,1895. (32) Riley, J. P.; Taylor, D. Anal. Chim. Acta 1968,40,479. (33) Barnes, R. M.; Genna, J. S. Anal. Chem. 1979,51,1055. (34) Leyden, D. E.; Patterson, Τ. Α.; Al­ berts, J. J. Anal. Chem. 1975,47, 733. (35) Van Nickerk, J. N.; DeWet, J. F.; Wybenga, F. T. Anal. Chem. 1961,33, 213. (36) Collin, R. L. Anal. Chem. 1961,33, 605. (37) Helfferich, F. "Ion Exchange"; McGraw-Hill: New York, 1962, ρ 47. (38) Leyden, D. E. In "Advances in X-ray Analysis; Grant, C. L.; Barrett, C. S.; Newkirk, J. B.; Ruud, C. O., Eds.; Ple­ num Press: New York, 1974; Vol. 17, ρ 293. (39) Kingston, H.; Pella, P. A. Anal. Chem. 1981 53 223 (40) Berman, S. S.; McLaren, J. W.; Willie, S. N. Anal. Chem. 1980,52,488. (41) Leyden, D. E.; Channel), R. E. Anal. Chem. 1972,44,607. (42) Miyazaki, Α.; Barnes, R. M. Anal. Chem. 1981,53,364. (43) Campbell, W. J.; Spano, E. F.; Green, T. E. Anal. Chem. 1966,38,987. (44) Hooten, Κ. Α. Η.; Parsons, M. L. Anal. Chem. 1973,45,436. (45) Lochmuller, C. H.; Galbraith, J.; Wal-

ter, R. L.; Joyce, J. D. Anal. Lett. 1972, 5, 943. (46) Sekizuka, Y.; Kojima, T.; Yano, T.; Ueno, K. Talanta 1973,20, 979. (47) Braun, T.; Farag, A. B. Anal. Chim. Acta 1974,69, 85. (48) Braun, T.; Farag, A. B. Anal. Chim. Acta 1974, 71,133. (49) Hercules, D. M.; Cox, L. E.; Onisick, S.; Nichols, G. D.; Carver, J. C. Anal. Chem. 1973,45,1973. (50) Leyden, D. E.; Luttrell, G. H. Anal. Chem. 1975,47,1612. (51) Zeronsa, W. P.; Dobkowski, G.; Siggia, S. Anal. Chem. 1974,46,309. (52) Leyden, D. E.; Nonidez, W. K.; Carr, P. W. Anal. Chem. 1975,47,1449. (53) Pankow, J. F.; Janauer, G. E. Anal. Chim. Acta 1974,69,97. (54) DeLayette-Mills, J.; Karm, L.; Ja­ nauer, G. E.; Chan, P.-K.; Bernier, W. E. Anal. Chim. Acta 1981,124, 365. (55) Mathies, J. C ; Lund, P. K.; Eide, W. Anal. Biochem. 1962,3,408.

TEMPERATURE CONTROL FOR LC COLUMNS Temperature control in liquid chromatography has generally been neglected. Improved resolution, effi­ ciency, and precision often result from operation of LC columns at controlled tem­ peratures above ambient.

OPTIONAL ΡREΗEΑΤER

A N O D I Z E D HEATING BLOCK (cover removed)

Leyden

ALUMINUM

WILL HEAT 15,25,30 cm ANALYTICAL COLUMNS

OUTER SAFTY JACKET

Wegscheider Donald Leyden received a BS in chemistry from Kent State Universi­ ty and MS and PhD degrees in ana­ lytical chemistry from Emory Univer­ sity. He is currently Phillipson Pro­ fessor of Environmental and Mining Chemistry at the University of Den­ ver. Ley den's research interests in­ clude chelating ion-exchange resins, NMR studies of proton exchange re­ actions, preconcentration of trace ions prior to X-ray fluorescence anal­ ysis, and the chemical modification of surfaces. Wolfhard Wegscheider received his doctorate in technical sciences from the Technical University of Graz, Austria, and worked later under Ley­ den as a Fulbright scholar. His re­ search interests include sample prep­ aration techniques for multielement analyses and mathematical tech­ niques in analytical chemistry. He is currently universit&tsdozent for ana­ lytical chemistry at the Technical University of Graz.

Bioanalytical Systems offers a low cost column heating system based on a metal block heater and solid state controller. The versatile controller can be used with other heating elements and probes for a variety of laboratory appli­ cations.

bas

BIOANALYTICAL SYSTEMS INC.

Purdue Research Park 1205 Kent Avenue West Lafayette, IN 47906 (317) 463-2505

CIRCLE 22 ON READER SERVICE CARD

ANALYTICAL CHEMISTRY, VOL. 53, NO. 9, AUGUST 1981 · 1065 A