Two puffed grain rice snacks were tested by the US Food and Drug
Administration; the banana flavor had a total As concentration of 109 ng / g (46 ng / g inorganic), and the blueberry flavor was below the limit of quantitation of 3 ng / g.45 In the study by Signes - Pastor et al, 10 As concentrations in 97 rice crackers from 15
different brands ranged from 19 to 246 ng / g,
with inorganic As ranging from 19 to 212 ng / g.