ABSTRACT
According to the survey data of the waters of Jiaozhou Bay in May, September, and October 1994, this article studied the content of PHC and its horizontal distribution in surface. The results indicate that the PHC content in the waters of Jiaozhou Bay ranged within 4.13 – 44.30μg/L, conforming to the national seawater standards of Class I and II. It shows that in terms of PHC content, the water in the area of Jiaozhou Bay was clean and was not polluted by PHC at all in May, September, and October. In May, the PHC content in the waters of Jiaozhou Bay was 12.60 – 17.60μg/L; in September, it was 4.13 – 10.00μg/L; in October, it was 9.94 – – 44.30μg/L. There were two sources of PHC content in the waters of Jiaozhou Bay, the transportation of rivers and the transportation of land surface runoff. The PHC content sourced from the transportation of rivers was 17.60 – 44.30μg/L and from the transportation of land surface runoff was 10.00μg/L. Therefore, all the PHC content is sourced from the transportation of rivers and land surface runoff during different months. In addition, no matter how time changes, the transportation of PHC content only came from the land, not the atmosphere, and the ocean. During the year, all PHC content came from the land and only the PHC content in rivers and land surface runoff was transported to the ocean. At the same time, the PHC content transported by the rivers and land surface runoff was 10.00 – 44.30μg/L, conforming to the national seawater standards of Class I and II (50μg/L).
