Whether Guangzhou Reach of Zhujiang River Will be Taken as a Swimming Area:an Investigation of Water Quality of Urban River Surge and a Certain Section / 环境与健康杂志

ABSTRACT

Objective To know the sanitary situation of urban river surge and a certain section of Zhujiang River and whether Guangzhou reach of Zhujiang River will be taken as a swimming region. Methods From July 1 to July 15,2007,the period of swim,the spring-tide water and ebb-tide water at urban river surge and a certain section were sampled and tested. 54 water sample at urban river surge and 40 at a certain section,the items included pH value,turbidity,dissolved oxygen,chemical oxygen demand, amino-nitrogen and heat-resistant coliform. Results The results indicated that pH value and chemical oxygen demand of the water at urban river surge and a certain section were eligible,but amino-nitrogen,dissolved oxygen and heat-resistant coliform were not eligible,the turbidity was high,the water quality did not meet the Hygienic Standard for Swimming Place (GB 9667-1996). The chemical oxygen demand in spring-tide water was lower than that in ebb-tide water(P