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January 1, 1949

The season--May, June, July, August, 1949

No abstract available.

Authors

C.S. Robbins

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1949

The season--November-December 1948

No abstract available.

Authors

C.S. Robbins

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1949

The season--September and October, 1949

No abstract available.

Authors

C.S. Robbins

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1949

The U.S.G.S. phosphate-fluoride-iodate method for the determination of very small amounts of thorium in naturally occurring materials

Detailed procedures are presented for the determination of very small percentages of thorium. The methods are designed to determine 0.001% of thorium oxide as the lower limit and are applicable to nearly all types of rocks. For quantities below a milligram of ThO2, the thorium is determined nephelometrically as the iodate or photemetrically with p-dimethylamineasephenylarsonic acid. For quantities

Authors

F.S. Crimaldi, J.G. Fairchild

January 1, 1949