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A Simple and Effective Binomial Block Based Pulse Sequence Capable of Suppressing Multiple NMR Signals
Scott A Willis1, Gang Zheng1, Allan M Torres1
1Nanoscale Organisation and Dynamics Group , Western Sydney University , Locked Bag 1797 , Penrith , NSW 2571 , Australia.
Abstract:
A binomial-like block based multiple suppression NMR pulse sequence, termed MULTI-GATE-FSB, that is simple to implement with outstanding suppression performance for multiple solvent signals (or multiple resonances) is investigated. The sequence was tested on two water-alcohol solvent systems, and a standard lysozyme sample, with suppression of three or four regions (though it is extendable to any number of regions). The suppression of all solvent signals was possible in the alcohol-water systems tested with both long and short recycle delays and without the requirement for lengthy presaturation pulses. Such a sequence holds promise not only for LC-NMR applications and solvent suppression but for multiple suppression applications in general (e.g., analysis of impurities/components).
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