Analysis of Ion Equilibrium and Chemical Components of Atmospheric Precipitation in Wuzhou City
In order to understand the balance of atmospheric precipitation between cations and anions,and the impact of ion concentration on acid rain pollution in Wuzhou City,the monitoring of the regular items including precipitation volume,pH value,conductivity,SO42-,NO3-,F-,Cl-,NH4+,Ca2+,Mg2+,Na+,K+were carried out for the atmospheric precipitation samples of three automatic sampling points and one manual monitoring point from March to September in 2023.In addition,Br-,NO2-,PO43-,HCO3-,HCOO-,CH3COO-,SO32-and other related ions were analyzed in the laboratory.The results showed that:(1)HCOO-,CH3COO-and other ions help to improve the qualified rate of balance between cations and anions.Organic acids have a certain contribution to the acidity of precipitation;(2)On the whole,the trend of changes in total ion concentration in precipitation is consistent with the trend of changes in conductivity.When the proportion of acid anions increases,pH value will decrease;(3)SO42-and NO3-are still the main factors leading to acidity in atmospheric precipitation.
atmospheric precipitationorganic acidchemical compositionbalance of between cations and anionsWuzhou city
万方数据
维普
