AOACSPIFANMethods-2017Awards

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J audzems : J ournal of AOAC I nternational V ol . 99, N o . 4, 2016  1117

AgNO 3 volume (mL) consumed at titration end point for Blank [ G ( d )]; f is the dilution factor for preparation of reconstituted powder, RTF, or concentrate {for samples requiring protein precipitation [ F ( a – c )], an additional factor (e.g., for a 25 g sample, f = 2) will be needed}; 35.45 is the chloride weight (μg) corresponding to 1 mL 1 mol/L AgNO 3 ; and 100 is the mass conversion to milligrams/100 g. Under the repeatable analysis condition, the absolute difference between two independent test results should not exceed 2% of the arithmetic mean.

References

(1) Official Methods of Analysis (2016) 20th Ed., AOAC INTERNATIONAL, Rockville, MD, Method 2015.07 (2) Official Methods of Analysis (2016) 20th Ed., AOAC INTERNATIONAL, Rockville, MD, Method 2015.08 (3) Official Methods of Analysis (2014) 19th Ed., AOAC INTERNATIONAL, Rockville, MD, AOAC SMPR 2014.015 (4) GB/T 601-2002 (2002) Chemical reagent – Preparation of standard volumetric solutions, http://www.chinesestandard.net/ PDF-English-Translation/GBT601-2002.html