【摘要】 用原子吸收分光光度等分析方法,测定了湘江水和河床沉积物中的20种元素的背景浓度。 江水和沉积物中元素的背景浓度及其在分配上的不同,前者主要受区域气候、岩性和水化学因素等的制约,后者更多的受区域地质环境和后生地球化学等作用的影响。更多还原

【Abstract】 In this paper, the background value of Cd, Zn, Cu,Pb,Hg, As, Cr, Mn, Be, Fe, Ca in the Xiangjiang river water and that of Cd, Pb, Cu, Zn, Hg, Ca, Zr, B, Be etc in the sediment altogether of twenty elements were determined by atomic absorption spectrophotmeter and other chemical methods.The factor which influences the natural concentration and difference of dis-trubtion of the elements in the river water and in the sediment was analysed. It is clear the elements in the river water were controlled by regional climate, rock and hydrologic chemistry, and those in the sediment were effected by regional geology and hysterogenetic geochemistry.更多还原