Determination of Lead in Dinnerware by an Ion Exchange Filter Paper ‐ X-Ray Fluorescence Method

Abstract

Abstract Lead leached from a variety of pottery dinnerware was determined by x-ray fluorescence after collecting and concentrating the lead on an ion exchange resin loaded filter paper disc. A 0.01 M HCl solution, to simulate acidic foodstuffs, used for the leaching was shown to have a leaching rate almost identical to that of white vinegar. The leaching rate increased with increasing temperature. The relative standard deviation for successive determinations of the same lead content was 1.8%, and the detection limit was 1.08 μg of total lead which corresponded to 0.0072 ppm when 150 ml of leaching solution was used.