CAJ | 학술논문

2007年3月-2008年9月在南京市江北地区南京信息工程大学采集有效降水样品共48个，测量了降水的pH值和电导率，用离子色谱仪分析检测了降水样品的阴、阳离子的质量浓度。结果表明：2007年的酸雨频率为44．5％，2008年酸雨频率为59．3％，南京江北工业区降水的酸性及酸化频率都有所增高；2007-2008年大气降水与2005-2006年所测数据相比较，NO3-的质量浓度略有增长，NH4＋的质量浓度有了较大幅度的增长；研究区域SO4／NO。的实验数据表明，硫污染特征有所减弱，氮氧化物污染逐渐突出，表现出燃煤污染与汽车尾气污染并存的过渡型大气污染特征。
2007년3월-2008년9월재남경시강북지구남경신식공정대학채집유효강수양품공48개，측량료강수적pH치화전도솔，용리자색보의분석검측료강수양품적음、양리자적질량농도。결과표명：2007년적산우빈솔위44．5％，2008년산우빈솔위59．3％，남경강북공업구강수적산성급산화빈솔도유소증고；2007-2008년대기강수여2005-2006년소측수거상비교，NO3-적질량농도략유증장，NH4＋적질량농도유료교대폭도적증장；연구구역SO4／NO。적실험수거표명，류오염특정유소감약，담양화물오염축점돌출，표현출연매오염여기차미기오염병존적과도형대기오염특정。
To understand the chemical composition and temporal variations of atmospheric precipitation to the north of the Yangtze River in Nanjing ,48 precipitation samples were collected and analyzed from March 2007 to September 2008. In the precipitation samples,44.5% in 2007 and 59.3% in 2008 were acidic. Compared with the data of 2005 and 2006, the acidity and acid rain frequency increased significantly;the mass concentration of NO3 had a slight increase and the mass concentration of NH; had a relatively obvious increase. The dominant atmospheric pollutant in this industrial area was SO2, mainly coming form coal burning and car exhaust. Comparison analysis showed that in recent years, the SO2s contribution to preciNtation acidity reduced while that of NOs enhanced markedly.