Sample transfer for infrared analysis in thin layer chromatograp

Details Sample transfer for infrared analysis in thin layer chromatograp Sample transfer for infrared analysis in thin layer chromatograp

1988-05-23

1989-03-14

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chromatography

2101983, 73 611C, 422 66, 422 70, 436 44, 436162, 436167, B01D 1508

Patent

active

048122416

ABSTRACT:
A chromatography sample transfer process is disclosed in which fractions on a TLC plate are automatically moved by capillary action from the plate to separate receptacles adapted to retain material for diffuse reflectance measurement. The developed TLC plate is so mounted that its fractions are horizontally spaced, and its lower edge is in a solvent. As the solvent moves upwardly due to capillarity, it dissolves the fraction samples, and transfers them to a plurality of horizontally spaced wicks. The wicks, which are preferably made of sintered stainless steel powder, carry their solvent/sample material upwardly to separate receptacles, each containing transparent powder which retains the sample during diffuse reflectance measurement. The solvent is removed from the receptacles by horizontal airflow (air knife) without requiring significant heating.

REFERENCES:
patent: 3864263 (1975-02-01), Jethwa
patent: 3928203 (1975-12-01), Kremer
patent: 4004548 (1977-01-01), Smola
patent: 4228008 (1980-10-01), Karol
patent: 4272381 (1981-06-01), Kremer
patent: 4696187 (1987-09-01), Kopp
Shafer, Sample Transfer Accessory for Thin Layer Chromatography Fourier Transform Infrared Spectrometer, Anal. Chem., Nov. 1986, 58, pp. 2708-2714.

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