Microcell for obtaining normal contrast infrared solution spectra at the five-microgram level

Price, George D.; Sunas, Ernest C.; Williams, John F.

doi:10.1021/ac60245a015

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1968

1981

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Cited by 14 publications

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“…several hundred jdg or even a few mg. There have been reports, however, where the infrared spectrophotometer has been adapted to only a few jug of material, or even less (15,16,23,27,28,39,44). Powell reported the use of infrared spectrophotometry with IAA, gibberellic acid and ABA (35).…”

Section: Other Systemsmentioning

confidence: 99%

The Evolution of Plant Hormone Analysis1

Powell

1972

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The analysis of plant extracts or diffusates for hormones has always bordered on the mysterious, and has been fraught with pitfalls for even determined investigators. Many of the problems have arisen from the exceedingly low concentrations in which hormones generally occur, and which consequently have necessitated the employment of bioassays. In recent years improved instrumentation has made it increasingly feasible to employ physical methods for detection and measurement of these substances. The options available are confusing, particularly to those new to the field. It is the purpose of this brief review to put in perspective the various methods available to an investigator, and to elaborate on the direction we seem to be moving.

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