The limits of detection (LOD) were determined by analysis of 17 method blanks and
calculated as 3 times the standard deviation estimate. Arsenic and selenium LODs
were 0.05 and 0.09 ng/ml, respectively. The limit of quantitation (LOQ) was calculated
as 10 times the standard deviation estimate for 17 method blanks. LOQs in food
depends on the mass of the analytical portion and number of dilutions required
(Tables 3 & 4). Based on a 1-g analytical portion, LOQs in food were estimated as
0.01 mg/kg for arsenic and 0.02 mg/kg for selenium.