A 3 g sample of air dried soil is shaken with 30 mL of 1 N KCl for 30 min. and then centrifuged. The supernatant is analyzed for aluminum by ICP-OES.
(See Method References No. 33 & 21)
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A 3 g sample of air dried soil is shaken with 30 mL of 1 N KCl for 30 min. and then centrifuged. The supernatant is analyzed for aluminum by ICP-OES.
(See Method References No. 33 & 21)