杭州湾溶解态的Ca^(2+),Mg^(2+),SO_4^(2-)  

DISSOLVED Ca^(2+), Mg^(2+), SO_4^(2-) IN THE HANGZHOU BAY

作　　者：张力军[1] 陈国华[1] 谢式南[1] 纪红[1] 王渊[1] 

机构地区：[1]青岛海洋大学化学化工学院,青岛266003

出　　处：《海洋与湖沼》1998年第3期306-312,共7页Oceanologia Et Limnologia Sinica

基　　金：国家自然科学基金!49376270

摘　　要：为研究杭州湾河口海水地区性水化学特征，于1994年5月和1993年8月在杭州湾14个大面站和两个连续站采集表层海水水样，对Ca2+，Mg2+，及S，Cl等化学要素进行了测定。研究结果表明，与黄河口长江口一样，杭州湾中溶解态Ca2+，Mg2+，主要受陆源径流与外海水物理混合稀释的影响，与Cl具有良好的线性关系．由于受北岸工业排废水的影响，Ca2+与cl线性相关比Mg2+，稍差。Mg2+／cl比值、／Cl比值与大洋水接近；而Ca2+／cl比值比大洋水高；估算了钱塘江Ca2+，Mg2+，的人海通量，该数据小于黄河、长江的对应值。Hangzhou Bay is a typical trumpet estuary which lies in the middle of our country. It is a region where outersea water mixes with terrestrial freshwater. Its Physicochemical property and water chemistry have special characteristics during the mixing process of freshwater and seawater. Seawater samples at 14 area stations and 2 adjacent stations in Hangzhou Bay were collected in May 1994 and Aug. 1993. Chemical key elements of dissolved Ca2+, Mg2+, , Cl and s were measared. The results indicated that dissolved Ca2+, Mg2+, at the Hagzhou Bay estuary had linear relationships with Cl as Huanghe and Changjiang River. Their concentrations were influenced by mixing and dilution with river water, industrial discharge and ocean water. Fit equatiopns are: b8station was deleted) bl station was deleted)The Ca2+ / Cl ratio at area stations was , Mg2+ /Cl ratio was / Cl was /Cl ratio was 28.8% higher than that in the ocean. While Mg2+ / Cl and ratios were sindlar to those in the ocean. The high Ca2+ / Cl ratios at individual stations were influenced by industrial discharge at the north of the bay. Isopleths of Ca2+, Mg2+, / cl changed progressively from northeast to southwest Water chemistry of two continuity stations were different because of complicated global chemical characteristic on the north of Hangzhou Bay. Fluxes of dissoved Ca2+, Mg2+, from Qiantang River to ocean were t/ a which were less than those of the Yellow River and Changjiang River.

关 键 词：杭州湾 钱塘江 溶解态 钙离子 镁离子 硫酸根 

分 类 号：P734.21[天文地球—海洋化学]