Measuring and testing – Measuring vessel
Patent
1976-05-21
1978-09-05
Swisher, S. Clement
Measuring and testing
Measuring vessel
G01N 114
Patent
active
041110510
ABSTRACT:
An automatic sampling apparatus particularly adapted for flameless atomic absorption spectrometers has a turntable carrying a ring of sample containers. The turntable is rotatably mounted on a base plate which in turn is mounted for limited pivotal movement on a support. A rinse station for a sample probe is provided on the base plate adjacent the periphery of the turntable. A sample probe in the form of an elongated tube angled at one end to form a pipette-like tip is mounted for swinging movement about a transverse axis and concomitant rotation about its longitudinal axis so that, at both limits of movement about the transverse axis, the probe tip is directed generally downwardly. At one limit of probe displacement, and with the base plate at one limit of pivotal movement, the probe tip is immersed in, and discharges, rinse liquid at the rinse station; by pivotal movement of the base plate, one of the sample containers positionally replaces the rinse station and the probe tip enters the container to aspirate sample liquid therefrom. The turntable is indexed each time the base plate is pivoted from one limit of its movement to the other and back so that the rinse station is replaced sequentially by each of the sample containers. When the probe is swung to the other limit of its displacement, the tip deposits sample liquid in a sample cell, e.g., the sample port of a heated graphite atomizer. The flow of rinse liquid, and aspiration and deposit of sample liquid, is effected by means of a plurality of pumps and conduits connected in a series flow communication between a source of rinse liquid and the end of the probe tube remote from the tip. The pumps are actuated in timed relation to the movement of the probe, turntable and base plate and include an air pump which introduces a slug of air to separate the sample from the rinse liquid which normally occupies the entire fluid flow system (i.e., pumps and conduits) except for the tip end of the probe.
REFERENCES:
patent: 3192968 (1965-07-01), Baruch et al.
patent: 3508442 (1970-04-01), Lighther
patent: 3529475 (1970-09-01), Lighther et al.
patent: 3581574 (1971-06-01), Smith
patent: 3666420 (1972-05-01), Paatzsch
patent: 3800984 (1974-04-01), Phelan
Huber Bernhard Werner
Tamm Rolf Gunther Arnold
Bodenseewerk Perkin-Elmer & Co. GmbH
Giarrantana Salvatore A.
Grimes Edwin T.
Masselle Francis L.
Swisher S. Clement
LandOfFree
Sampling procedure and device for flameless atomic absorption sp does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sampling procedure and device for flameless atomic absorption sp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sampling procedure and device for flameless atomic absorption sp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2088037