Determination of Opal in Soil by Alkali Dissolution Anaylsis1
- Robert L. Jones2
Boiling the 20–50 µ fraction of soil for 20 min in 0.5N NaOH and subsequent colorimetric determination of dissolved silica gives results comparable in precision to the liquid density-separation method. The main advantage is economy of time.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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