CAJ | 학술논문

潮流引起的水动力变化，对河口水体中重金属的迁移转化行为具有重要的作用。于2011年9月进行了两个航次的断面与定点连续调查，研究了潮流变化特别是咸潮入侵对磨刀门Cd、Pb分布的影响。结果表明，小潮期间从河端到海端溶解态Cd浓度显著升高，水柱Cd浓度发生分层现象，大潮期间Cd的分布形式主要受海水稀释作用的影响；磨刀门溶解态Pb大潮、小潮的断面分布特征较为复杂，与Cd分布特征存在较大差异。小潮定点连续调查期间， Cd分层明显， Pb的分层则不显著；大潮定点连续调查期间，受到强咸潮的作用， Cd、Pb分布主要受物理稀释作用的影响。
조류인기적수동력변화，대하구수체중중금속적천이전화행위구유중요적작용。우2011년9월진행료량개항차적단면여정점련속조사，연구료조류변화특별시함조입침대마도문Cd、Pb분포적영향。결과표명，소조기간종하단도해단용해태Cd농도현저승고，수주Cd농도발생분층현상，대조기간Cd적분포형식주요수해수희석작용적영향；마도문용해태Pb대조、소조적단면분포특정교위복잡，여Cd분포특정존재교대차이。소조정점련속조사기간， Cd분층명현， Pb적분층칙불현저；대조정점련속조사기간，수도강함조적작용， Cd、Pb분포주요수물리희석작용적영향。
Tides can cause changes in hydrodynamics and have great influence on the fate of heavy metals in estuary. The distributions of dissolved Cd and Pb in the Modaomen Channel were investigated in September 2011. During neap tide, Cd concentration increased from river end member to sea end member; Cd stratification was also found. The fate of Cd was subjected to dilution by sea water of low Cd concentration during spring tide. There were large differences of sectional distribution characteristics between Cd and Pb. The sectional distribution of Pb was complicated. During the neap tide anchor survey, Cd stratification was obvious. During the spring tide anchor survey when strong salt-water intrusion occurred, the fates of Cd and Pb were mainly decided by physical dilution of sea water.