珠江河口水体的pH和碱度

pH AND ALKALINITY IN THE WATER BODY OF PEARL RIVER MOUTH

本文根据1987年2月至1988年2月的调查资料,讨论了珠江河口水体pH、碱度和比碱度的变化规律及它们与盐度的关系。结果表明,从虎门外至桂山岛的珠江口主水道上,pH随盐度增加而增加。pH与盐度的相关性最好,均在99.9％的置信水平上显著;pH与碱度的相关性次之。珠江河口水的碱度是保守的;在从虎门外至桂山岛的珠江口主水道上,比碱度与氯度是密切的负相关。

This paper has discussed the variation rules of pH, alkalinity, and specific alkalinity,in the Pearl River Mouth respectively,as well as their relationship to salinity based on an investigation from February 1937 to February 1988. Results show that an increase of pH is accompanied with increase of the salinity at the waterway in the Pearl River Mouth from Humen to Guishan Island. There exists a good interrelation between pH and salinity, which is better than that between pH and alkalinity, with the confidence levels of 99.9%. Results also show that alkalinity is conservative in Pearl River Mouth, there exists a better negative correlation between specific alkalinity and chlorinity at the waterway in Pearl River Mouth from Humen to Guishan Island.