The loss of lead in biological materials following different drying and ashing procedures

Abstract  The loss of lead in various kinds of biological materials after drying and ashing is studied by using203Pb as tracer which is intraveneously injected into mice. The experimental results show that although the oven ashing can be used for determining the lead in samples of lung, kidney, and liver, etc., the oxygen plasma and high pressure digestion are the most suitable methods for the determination of lead in biological materials.