3 • Operation and Maintenance
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solvent midway through. This helps maintain a favorable solvent/sample
equilibrium for samples that are heavily loaded or otherwise difficult to
extract.
c. Increase the rinse volume to allow more solvent to pass through the
sample.
NOTE When using 100-mL cells, it may be necessary to
balance the number of static cycles and the rinse
volume to prevent the collection bottle from being
overfilled.
6. If analytes still appear in the extract from the second extract, make the
adjustments listed below.
a. Run three static/rinse cycles.
b. Raise the temperature again.
c. Increase static time.
d. Select a different solvent or consider additional pretreatment of the
sample, such as grinding or hydrolysis.
When target analytes no longer appear in the extract from the second extract,
the method is complete for this sample type.
Содержание ASE 150
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