Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1982-05-27
1983-11-08
Ciarlante, Anthony V.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
250432R, G01N 3106
Patent
active
044135041
ABSTRACT:
A liquid-phase chromatography detector comprising a flow cell having an inlet tubular conduit for receiving a liquid chromatographic effluent and discharging it as a flowing columnar stream onto a vertically adjustable receiving surface spaced apart from and located vertically below and in close proximity to the discharge end of the tubular conduit; a receiver adapted to receive liquid overflowing from the receiving surface; an exit conduit for continuously removing liquid from the receiver; a light source for focussing fluorescence-producing light pulses on the flowing columnar stream as it passes from the outlet of the conduit to the receiving surface and a fluorescence detector to detect the produced fluorescence; a source of light pulse for producing acoustic waves in the columnar stream as it passes from the conduit outlet to the receiving surface; and a piezoelectric transducer adapted to detect those waves; and a source of bias voltage applied to the inlet tubular conduit and adapted to produce ionization of the liquid flowing through the flow cell so as to produce photocurrents therein and an electrical system to detect and record the photocurrents. This system is useful in separating and detecting individual chemical compounds from mixtures thereof.
REFERENCES:
patent: 3706381 (1972-12-01), Joynes et al.
patent: 3938365 (1976-02-01), Dewey, Jr.
patent: 3997298 (1976-12-01), McLafferty et al.
patent: 4059406 (1977-11-01), Fleet
patent: 4170736 (1979-10-01), Wessel
patent: 4233030 (1980-11-01), Twichett et al.
Malcolme-Lawes, Massey and Warwick, A Beta-Induced Fluorescence Detector, Jul. 1982.
Jurgensen Arthur R.
Voigtman Edward G.
Winefordner James D.
Ciarlante Anthony V.
University of Florida
Williams Hezron
Yeager Arthur G.
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