在灵山岛海域测定了Cr(Ⅵ)、Cr(Ⅲ)、Cr(S)、Cr(P)和Cr(T)。研究表明,四季中Cr(T)与Cr(P)以春季含量最高,这与浮游生物有一定的相关性。Cr(P)在春、冬季为铬的主要存在形态,尤以春季含量最高,而夏季较低。Cr(Ⅲ)在夏、秋季为主要形态。在四季中Cr(Ⅵ)含量较低,均为次要形态。而Cr(Ⅲ)在溶解态中则为最主要形态。Cr(Ⅲ)/Cr(T)与Cr(P)/Cr(T)呈较好的负相关,不同形态铬存在着转移过程。 Cr (Ⅵ), Cr (Ⅲ), Cr (S), Cr (P) and Cr (T) were measured in Lingshan Island. The results showed that the highest content of Cr (T) and Cr (P) in the four seasons was related to plankton. Cr (P) is the main form of chromium in spring and winter, especially in spring and lower in summer. Cr (Ⅲ) is the main form in summer and autumn. In the four seasons Cr (Ⅵ) content is low, are minor forms. While Cr (Ⅲ) is the most dominant species in solution. Cr (Ⅲ) / Cr (T) showed a good negative correlation with Cr (P) / Cr (T), and there was a shift in the different forms of chromium.