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孤东油田近海铬的含量
黄华瑞¹, 庞学忠¹
中国科学院海洋研究所

摘要:

本海域总溶解铬的含量低于黄河口的含量,未发现有明显的污染。总铬和颗粒铬的分布趋势相似。颗粒铬占总铬的比率在90%以上,因此,颗粒铬为本海域海水中最主要形态,三价铬次之,六价铬则为最次要形态;而三价铬在总溶解铬中则是主要形态。三价铬对总铬的比率、六价铬对总铬的比率与颗粒铬对总铬的比率之间均存在着负相关性。

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基金项目:

CHROMIUM CONTENTS IN OFFSHORE AREA OF GUDONG OIL FIELD

Abstract:

Result of chromium observation in Oct. 1986 showed that average contents of total chromium, particulate chromium, total dissolved chromium, trivalent chromium, hexavalent chromium are 4.581, 4.429, 0.152, 0.107, and 0.045 #g/L respectively. Average ratio of Cr(Ⅵ) /Cr(T), Cr(Ⅲ)/Cr(T), Cr(P)/Cr(T), Cr(VI)/Cr(S) and Cr(Ⅲ)/Cr(S) are 0.98%, 2.34%, 96.68 %, 29.6%, and 70.4% respectively. Particulate chromium is a predominant species in sea water of this region, hexavalent chromium is a species of less degree. Trivalent chromium is the principal species in total dissolved chromium of sea water. Research showed that relation of Cr(Ⅲ)/Cr(T), Cr(Ⅵ)/Cr(T) to Cr(P)/Cr(T) was negative. Significant chromium pollution was not found in this nearshore area.

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