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QUESTION
A 125 g sample of brown rice containing 256 ppb of inorganic arsenic was milled to remove the husk and convert it to white rice. The material was...
A 125 g sample of brown rice containing 256 ppb of inorganic arsenic was milled to remove the husk and convert it to white rice. The material was sieved to separate the rice and the husk (or bran). The white rice weighed 110 g. The husk material was analyzed and found to contain 824 ppb of inorganic arsenic. What was the concentration of inorganic arsenic in the white rice?
