PREPARATION OF IN - HOUSE COCOA FLOUR RMs AND DETERMINATION OF ITS Cd CONTENT BY USING GFAAS
Abstract: In-house cocoa flour
RMs instead of CRMs was prepared and checked of its homogeneity and stability.
Due to CRMs are limited availability in terms of matrices of concern and costly
(high production cost) making in-house cocaflour RMs is alternatively used for
daily quality control in the laboratory. The analysis method for reliable
checking of homogeneity and stability of cadmium content in the in-house
cocoaflour RMs was studied. The effects of magnesium nitrate and
lanthanum/magnesium nitrate as chemical modifiers in the determination of
cadmium in cocoaflour by GFAAS were studied as well. Detection limit of method
was estimated to be 0.07 ug L'(calcuiaied as 3Sy;/slope of calibration curve)
and calibration curve of working range was linear. The results analysis for
candidate of in-house cocoaflour RMs reveals the consistence results and no
variability between and within-bottle observed at 95% limit of confidence and
stabile during the period of time observed.
Penulis: Anna E. Persulessy
Kode Jurnal: jpkimiadd090254
