Chemistry: analytical and immunological testing – Tracers or tags
Patent
1983-03-14
1985-05-28
Richman, Barry S.
Chemistry: analytical and immunological testing
Tracers or tags
436 27, 436126, G01N 3328, G01N 3108
Patent
active
045201099
ABSTRACT:
A material is traced to its origin or the flow pattern of a fluid medium is defined by incorporating into the material or fluid medium a perfluorinated C.sub.9 -C.sub.18 polycyclic hydrocarbon containing at least two bridgehead carbon atoms linked through a bridge containing at least one carbon atom, collecting a sample of the material or fluid medium after distribution or flow, and analyzing the sample for the presence of the perfluoro compound.
REFERENCES:
patent: 3931143 (1976-01-01), MacLeay et al.
patent: 4105798 (1978-08-01), Moore et al.
patent: 4256038 (1981-03-01), Dietz et al.
Exotic Tracers for Atmos. Studies; Lovelock et al., Atmos. Envir. vol. 16, No. 6, pp. 1467-1471, 6/8/82.
Perfluoro Carbons as Hydrological Tracers; Kerrin 2/25/81.
Moore Robert E.
Simmonds Peter G.
Back Stanford M.
Gzybowski Michael S.
Hess J. Edward
Johnson Donald R.
Richman Barry S.
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