Apparatus for collecting particulate samples

Details Apparatus for collecting particulate samples Apparatus for collecting particulate samples

1991-10-23

1993-06-22

Fox, John C.

Measuring and testing

Sampler, sample handling, etc.

Automatic control

222368, 210534, G01N 120

Patent

active

052208257

ABSTRACT:
Multi-chamber devices of collecting particles in aquatic environments including an upper chamber serving as a particle interceptor chamber, a lower chamber serving as a particle accumulator chamber, and a valve assembly interposed between the upper and lower chambers are disclosed. Upon rotation of an indented valve body, particles in the upper chamber are transferred to the lower chamber and preserved for analysis. The valve assembly substantially reduces the presence of living organisms in particle samples and enhances the accuracy of passive vertical particle flux sampling techniques. A plurality of sample collection chambers may be provided to facilitate temporal resolution of vertical particle flux measurements during a single deployment period.

REFERENCES:
patent: 1904062 (1933-04-01), Laughlin et al.
patent: 1996044 (1935-03-01), Green
patent: 2411220 (1946-11-01), McDargh, Jr.
patent: 4321823 (1982-03-01), Anderson
patent: 4383545 (1983-05-01), Becker
Letter to Dr. Neil Anderson from John Hedges dated Jul. 18, 1989.
Progress Report entitled "The Effectiveness of Poisons and Preservatives on the Composition of Organic Matter Collected in Sediment Traps," prepared by John Hedges amd dated Jul. 18, 1989.
Regulations of the National Science Foundation Regarding Information Dissemination to the Public, pp. II-5, VII-4 and VII-5.

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