重金属在沉积物中以不同形式存在.人为因素引起的重金属在沉积物中的积累主要以有效态的形式存在,而那些呈残渣态的重金属基本是自然界中地质过程的产物. 近年来,有些人对渤海湾重金属进行了研究.但对其在沉积物中的存在形式尚未见报道.本文采用分步提取方法,探讨重金属在渤海湾沉积物中的5种赋存形式,即可交换态、碳酸盐态、Fe-Mn氧化物态、有机态和残渣态,并与邻近岸段和渤海中部进行对比. Heavy metals exist in different forms in the sediment.The accumulation of heavy metals in sediments caused by human factors is mainly in the form of effective forms, while the heavy metals in the residual form are basically the products of the geological processes in nature.In recent years, some people The heavy metals in the Bohai Bay have been studied, but their forms in the sediment have not been reported.In this paper, five kinds of forms of heavy metals in the sediments of the Bohai Bay, ie, exchangeable state, carbon Acid salt, Fe-Mn oxide, organic and residual, and compared with the adjacent shore and central Bohai Sea.