摘要
本文研究了海水中碳酸根在固体粒子上的吸附。碳酸根在各种固体颗粒物上的吸附程度大小顺序为：赤铁矿＞δ－MnO2＞水锰矿＞SiO2，最大吸附量可达到约ZmgC／g吸附剂，且最大吸附值均在天然海水pH（pH8）左右。在低pH时，碳酸根对NaCl介质中砷酸根的吸附没有影响，在高pH时，则降低了砷酸根在固体颗粒物上的吸附量，因此碳酸根的存在对其他阴离子的吸附会产生竞争作用。
The adsorption of carbonate on solid particles in seawater were investigated.The sequence of adsorption amounts of carbonate on the solid particles is: hematite>δ-MnO2,>manganite>SiO2. At the pH of natural seawater (pH8), the adsorptionamount of carbonate is maximum and the maximum adsorption amouht is about2mg C/g adsorbent. Carbonate does not affect the adsorption of arsenate. in Naclmedium at low pH, but at high pH carbonate can decrease the adsorption amountof arsenate on solid particles. Competitive adsorption can occur when carbonateand other anion coexist.
出处
《海洋湖沼通报》
CSCD
北大核心
1998年第2期12-16,共5页
Transactions of Oceanology and Limnology
基金
国家自然科学基金!49606074
