The contents of TOC, DOC, POC and PEC are generally higher in the samples of wet-season than that in the dry season. Furthermore, the contents of TOC and DOC show certain level of negative relationship with the pH values of rainwater samples.

• 雨水中的TOC、DOC含量以及雨水颗粒物的POC、PEC含量均显示出季节性变化的特点。