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南京市降水化学成分特征及变化趋势
引用本文:涂俊.南京市降水化学成分特征及变化趋势[J].上海环境科学,1999,18(10):451-453.
作者姓名:涂俊
作者单位:南京市环境监测中心站 南京
摘    要:通过对1992-1998年南京市降水化学成分特征及其变化趋势的分析,表明南京市降以化明显,但无恶化迹象,降水化学成分中SO^2-4对酸化起主要作用,但其作用呈下降趋势,而NO^-3,Cl^-的作用呈上升趋势。Ca^2+,NH^4+在中和降水的酸性方面起十分重要的作用,Ca^2+的作用逐渐减弱,而NH^+4的作用则逐渐增大。

关 键 词:降水酸化  化学成分  离子  变化趋势  南京市  酸雨

Characteristics and Trend of Chemical Composition of Precipitation in Nanjimg
Tu Jun.Characteristics and Trend of Chemical Composition of Precipitation in Nanjimg[J].Shanghai Environmental Science,1999,18(10):451-453.
Authors:Tu Jun
Abstract:Analysis on chemical composition of precipitation in Nanjing from 1992 to 1998 showed that precipitation acidification was obvious, but not worse. The contribution of SO42- to precipitation acidification was most important among chemical composition, but it was decreasing with NO3- and Cl- increasing.The contribution of Ca2 and NH4 to neutralization of precipitation were most important, and that of Ca2 was decreasing while NH4 was increasing
Keywords:Precipitation acidification Contribution of ions Chemical composition Characteristics Trend Nanjing
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