COMPARISON OF DIRECT EXTRACTION AND AOAC OFFICIAL METHODS FOR AVAILABLE P2O5 IN FERTILIZERS - COLLABORATIVE STUDY

Citation
Je. Gliksman et al., COMPARISON OF DIRECT EXTRACTION AND AOAC OFFICIAL METHODS FOR AVAILABLE P2O5 IN FERTILIZERS - COLLABORATIVE STUDY, Journal of AOAC International, 77(4), 1994, pp. 795-802
Citations number
7
Categorie Soggetti
Chemistry Analytical
ISSN journal
10603271
Volume
77
Issue
4
Year of publication
1994
Pages
795 - 802
Database
ISI
SICI code
1060-3271(1994)77:4<795:CODEAA>2.0.ZU;2-M
Abstract
Fifteen fertilizer samples were sent to 13 laboratories for determinat ion of available P2O5. Eleven laboratories, including author's laborat ory, completed the analyses. Each sample was analyzed twice for availa ble P2O5 by the new direct extraction method, and by either of the AOA C Official Methods using direct or indirect extraction. Results were f avorable for the new direct extraction method even though the range an d types of samples were highly variable. The direct extraction method was adopted first action by AOAC INTERNATIONAL.