Collaborative Study of Techniques for the Extraction of Iron and Zinc from Fertilizers
Keyword(s):
Abstract Water, chelate, and acid techniques were compared for the extraction of iron and zinc from fertilizer samples. The water and chelate extractions were studied to offer an alternative to the official final action acid extraction, 2.098(a)–(c); atomic absorption spectrophotometry was the determinative step. The results for 10 samples from 24 laboratories were examined statistically and were sufficiently reproducible for widespread use of the methods. Statistical treatment of the data from the proposed methods compared favorably with that from the official method. Both the water and chelate extraction techniques have been adopted as official first action, supplementary to 2.098.
1970 ◽
Vol 53
(5)
◽
pp. 923-925
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1982 ◽
Vol 45
(8)
◽
pp. 707-712
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ASBC Collaborative Study on Aluminum in Beer by Graphite Furnace Atomic Absorption Spectrophotometry
1991 ◽
Vol 49
(4)
◽
pp. 151-151