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分别于2008年2月(冬季),5月(春季),8月(夏季)和11月(秋季)对深圳湾海水中COD与TOC进行了四个航次的调查和研究,结合国家标准方法,获得了深圳湾COD与TOC的平面和季节分布特征,并对COD与TOC的相关性进行了探讨。结果表明:整个深圳湾海域COD基本遵循从湾内到湾外,逐渐降低的平面分布规律以及夏季>春季>冬季>秋季的季节分布特征;海水TOC也基本遵循从湾内到湾外,逐渐降低的平面分布规律以及秋季>冬季>夏季>春季的季节分布特征;深圳湾COD与TOC之间有着良好的相关性,相关系数大于0.9。
COD and TOC in the Shenzhen Bay waters were investigated and studied for four voyages in February 2008 (winter), May (spring), August (summer) and November (autumn) respectively. Combined with the national standard methods, The distribution characteristics of COD and TOC in Shenzhen Bay were obtained, and the correlation between COD and TOC was also discussed. The results showed that the COD in the Shenzhen Bay basically followed the flat distribution pattern gradually decreasing from the bay to the outer bay and the seasonal distribution characteristics of summer> spring> winter> autumn; the TOC of seawater basically followed the gradually decreasing plane from the bay to the bay And the seasonal distribution of autumn> winter> summer> spring. There was a good correlation between COD and TOC in Shenzhen Bay, and the correlation coefficient was greater than 0.9.