Read e-book online Analytical and Chromatographic Techniques in PDF

By Colin F. Poole, Hal T. Butler, Myra E. Coddens, Sheila A. Schuette (auth.), Donald M. Wieland, Michael C. Tobes, Thomas J. Manger (eds.)

ISBN-10: 146124854X

ISBN-13: 9781461248545

ISBN-10: 1461293316

ISBN-13: 9781461293316

In 1906, Michael T. candy first constructed the chromatographic technique by utilizing an adsorbant to split pigments. because that point, the technological advances in TLC and HPLC have led to new definitions of purity in parallel with the advances. Radiopharmaceutical chemistry is mainly depending on the chromat­ ographic approach as a result of the quite small volume of fabric in so much radiopharmaceuticals-often so small that the standard actual equipment of analytical chemistry can't be used. for this reason, this choice of papers represents the main to profitable radiopharmaceutical improvement by means of atmosphere the traditional for the pres­ of radiochemical purity. ent-day definition William C. Eckelman, Ph.D. Diagnostics affiliate Director The Squibb Institute for scientific learn New Brunswick, New Jersey Preface The chapters herein are up to date and extended models of shows that the authors made at a symposium hung on June four, 1984 in la, California below the sponsorship of the Radiopharmaceutical technology Council of the Society of Nuclear drugs. All manuscripts have been refereed. The purpose of the symposium organizers was once to enlist contributors who paintings on a daily foundation with the analytical and chromatographic thoughts to be mentioned on the symposium. We think convinced that this distillation of hands-on adventure may be of price to graduate scholars in addition to skilled researchers in radio­ pharmaceutical chemistry and similar fields which use radiotracer methodology.

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Extra resources for Analytical and Chromatographic Techniques in Radiopharmaceutical Chemistry

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Sequential wavelength scanning at two emission wavelengths provides complementary data on the complexity of the mixture. Ex = 254 nm, and Em = 4{)() nm (--__ )' and 450 nm ( - - ) . DBPyr = dibenzo[a,i]pyrene, BPer = benzo[ghi]perylene, DBAnt = dibenzo[a,h]anthracene, BaP = benzo[a]pyrene, Per = perylene, BaA = benzo[a]anthracene, Chr = chrysene, Pyr = pyrene, Fit = fiuoranthene, Ant = anthracene, and Phen = phenanthrene. ,, I I , DBAnt I, BPer BoP II" II JI I , I I I I I , ,' \ ... ,-I ,I I • , 'I OBPyr 28 Instrumental Evaluation of Thin-Layer Chromatograms Ex.

This is done by a routine check of the TLC scanner using a "phantom" of s7Co-impregnated epoxy strips embedded in a plexiglass block that was constructed at Dupont! NEN Products. The epoxy strips contain known quantities of S7CO, and are at known distances apart in the plexiglass block so that both an accuracy and resolution check of the scanner can be made using this device. 2. Once the scanner has been shown to be working properly, the sample TLC plates are scanned. The ability to do the simultaneous measurement of several labeled 99mTc species in radiopharmaceutical preparations is one of the main advantages of using a radio-TLC procedure in place of an ITLC assay method.

The correct choice of solvent system and the technique used are critical to the accurate and reproducible measurement of 99mTcO,j and colloidal 99mTc_ oxides in radiopharmaceuticals. For example, it has been found that the use ofMEK is preferred over acetone as the developing solvent for the measurement of 99mTcOi in 99mTc-Glucoheptonate and other 99mTc-Iabeled products. 2 compare the use of these solvents for the measurement of 99mTcO,j in 99mTc-Glucoheptonate. The acetone system for the ITLC-SG assay of 99mTcO,j tends to be erratic and biased high (relative to the MEK system).

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Analytical and Chromatographic Techniques in Radiopharmaceutical Chemistry by Colin F. Poole, Hal T. Butler, Myra E. Coddens, Sheila A. Schuette (auth.), Donald M. Wieland, Michael C. Tobes, Thomas J. Manger (eds.)


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