Vertical transferring process, mechanism and model of Pb in Jiaozhou bay

Abstract

Abstract. This paper analyzed the vertical transferring process, mechanism and model of Pb in Jiaozhou Bay based on investigation of Pb in surface and waters in different seasons during [1979][1980][1981][1982][1983]. Results showed that the Pb contents in surface waters were changing with seasons within year, and Pb contents in bottom waters were influenced by which in surface waters by means of vertical transferring. The mechanism of the vertical transferring process was revealed. The vertical transferring process was containing three stages as, 1)Pb was transferring to surface waters in the bay, 2)Pb was transferring to bottom waters, and 3) Pb was fixing to the sediment and leaving the waters. Furthermore, a block diagram model was established to describe the transferring process and variations of Pb in waters.