The research of below-cloud scavenging of rainwater in Guilin City  

作　　者：Bai Yuhua Yao Rongkui Li Xin Tang Xiaoyan(The Department of Technical Physies and The Center of Environmental Science,Peking University, Beijing 100871, China) 

出　　处：《Journal of Environmental Sciences》1994年第3期322-329,共8页环境科学学报（英文版）

摘　　要：Sequential samples of single precipitation event were collected by the use of specially de-signed semi-automatic sequential precipitation collector in the spring of 1988 in Guilin City. ThePH value and soluble chemical species such as SO, NO, NH, Ca￣(2+), Mg￣(2+), Na￣+, K`+, F￣- andCl￣- were analyzed. An apparent decrease in the concentration of all ions except H￣+ and NO wasobserved at the initial portion of the events. The relative acidity increased as the event progress.The concentration of H￣+ was the result of comprehensive actions of all ions. The average scavengingratio of events was calculated and it is found that SO was the major contributor for acid rain inGuilin and Ca￣(2+) was the important neutralizer.Sequential samples of single precipitation event were collected by the use of specially de-signed semi-automatic sequential precipitation collector in the spring of 1988 in Guilin City. ThePH value and soluble chemical species such as SO, NO, NH, Ca￣(2+), Mg￣(2+), Na￣+, K`+, F￣- andCl￣- were analyzed. An apparent decrease in the concentration of all ions except H￣+ and NO wasobserved at the initial portion of the events. The relative acidity increased as the event progress.The concentration of H￣+ was the result of comprehensive actions of all ions. The average scavengingratio of events was calculated and it is found that SO was the major contributor for acid rain inGuilin and Ca￣(2+) was the important neutralizer.

关 键 词：acid rain  sequential sample below-cloud scavenging precipitation event. 

分 类 号：P426.6[天文地球—大气科学及气象学]