从前述 讨论可知，较高含量的 Co 和 Hg 主要出现在河口流 域，其

From the foregoing discussion, the high content of Co and Hg was seen in the estuary basin, its surrounding coal-fired power plants and other industrial distribution through the regional environmental survey results showed that the higher the content of Co and Hg may be affected.

From the above discussion, it can be seen that higher levels of Co and Hg are mainly present in the estuary basin, and its surrounding distribution of coal-fired power plants and other industries through regional environmental survey results indicate that higher Co and Hg content may be affected by it.

From the above discussion, it can be seen that the high content of CO and Hg mainly occurs in the River Mouth Basin, and there are coal-fired power plants and other industries around it. According to the regional environmental survey results, the high content of CO and Hg may be affected by it