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本研究测定了渤海湾海水中总溶解铬、Cr(Ⅳ)、Cr(Ⅲ)、颗粒铬和气溶胶中铬,分析了渤海湾海水中Cr(Ⅳ)、总溶解铬、总铬和颗粒铬的分布趋势,以及Cr(Ⅲ)的分布情况。研究表明,河流排污控制着渤海湾铬的分布,渤海湾河流排出有机物主要是与Cr(Ⅲ)产生吸附、络合作用,这是固-液界面交换的机制之一,形态研究表明,颗粒铬是渤海湾铬的主要存在形式,而Cr(Ⅲ)又是价态铬的主要形态,渤海湾Cr(Ⅳ)含量很低,说明海水中铬处在热力学不平衡状态。
In this study, total dissolved Cr, Cr (Ⅳ), Cr (Ⅲ), particulate chromium and aerosols in Bohai Bay seawater were measured. Cr (Ⅳ), total dissolved chromium, total chromium and particulate chromium Distribution trend, and the distribution of Cr (Ⅲ). The results show that the river discharge controls the distribution of chromium in the Bohai Bay. The discharge of organic compounds in the Bohai Bay river is mainly due to adsorption and complexation with Cr (Ⅲ), which is one of the mechanisms of solid-liquid interface exchange. The morphological studies show that particulate chromium Is the main form of chromium in the Bohai Bay, and Cr (Ⅲ) is the main form of valence chromium. The content of Cr (Ⅳ) in the Bohai Bay is very low, indicating that chromium in seawater is in a thermodynamic imbalance.