COMMENT PARAMETERS
USER COMMENTS
AOAC OMA
2012.15
Method Name/Manuscript Title
Total Iodine in Infant Formula and Adult Nutritionals by ICP MS
Manuscript Reference
In your experience using the method, does the
method perform according to the method’s
applicability as written?
Sample preparation is by 5% or 50% KOH extraction and analysis by
ICP‐MS for the range of 4 to 1500µg/100g. For 5%KOH extraction
method, 5g slurry made up to 50mL (Total D.F = 80times). After
extraction the solution so turbid, changed the color to brown and
there is no clear solution obtained after refrigerated centrifugation or
by filtering with 0.22µ filter. Further dilution of 10times more results
final D.F to 800times. Method shows poor recovery for infant
formula.
In your experience with the method, is there
any safety concerns identified while using or
regarding use of the method?
‐
Do you have any information that supports
regarding the reproducibility of the method as
written: If so, please specify and submit
information?
‐
Please attach any documentation to support
your feedback, if available.
Based on your experience with the method,
are there any recommended changes to the
AOAC First Action Method as written?
Extraction Method needs improvement. A different extraction proces
is recommended with the use of different reagents.
AOAC INTERNATIONAL
Stakeholder Panel for Infant Formula and Adult Nutritionals (SPIFAN)
