Lead extraction and analysis

Details Lead extraction and analysis Lead extraction and analysis

1990-02-23

1991-05-28

Lacey, David

Chemistry: analytical and immunological testing

Metal or metal containing

Organometallic compound determined

436164, 436171, 436178, 436182, 210725, 210778, 210797, 210912, G01N 2100

Patent

active

050195166

ABSTRACT:
Techniques are described for extracting lead from a sample of potable water and analyzing for the amount of lead so extracted. A complexing agent is added to the water to form a complex with the lead. The water is then contacted with unmodified cellulosic or siliceous material on which the lead complex is retained. The complexed lead can be removed from the cellulosic or siliceous material with a weak acid. The amount of lead in the sample can be readily determined colorimetrically.

REFERENCES:
patent: 3790370 (1974-02-01), Lalancette
patent: 4076618 (1978-02-01), Zeblisky
patent: 4908137 (1990-03-01), Chen
Pilipenko, A. T. et al. "Extraction-Atomic Absorption Determination of Trace Elements in Natural Waters," CA 96(8):57465s.
Fritz, J. S. et al. "Quantitative Analytical Chemistry", Boston, Mass.: Allyn and Bacon Inc. 1979, pp. 104-105.
CA 99(6):47124c "Appl. of the ion-exchager Cellex P . . . ", Fresenius Z. Anal. Chem., 315(2) pp. 126-131, 1983.
Minczewski, J. et al. "Separation and Preconcentration Methods in Inorganic Trace Analysis", New York: Ellis Harwood Limited, 1982.

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