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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。
In order to study the hydrochemical characteristics of the seawater in the Hangzhou Bay estuary, surface seawater samples were collected from 14 Damen stations and two consecutive stations in Hangzhou Bay in May 1994 and August 1993, and the water samples of Ca2 +, Mg2 + and S, Cl Other chemical elements were measured. The results show that, like the Changjiang Estuary in the Yellow River Estuary, the dissolved Ca2 + and Mg2 + in Hangzhou Bay are mainly influenced by the physical dilution and dilution of land-surface water and seawater, and have a good linear relationship with Cl. Due to the influence of industrial waste water from North Shore, the linear correlation between Ca2 + and cl is slightly worse than that of Mg2 +. The ratios of Mg2 + / cl and Cl / Cl are close to that of ocean water, while the ratio of Ca2 + / cl is higher than that of ocean water. The human sea flux of Ca2 + and Mg2 + in Qiantang River is estimated, which is smaller than that of the Yellow River and the Yangtze River.