乌鲁木齐市年际大气环境化学离子组分分析  

Analysis on the Annual Chemical Composition in Urumqi

作　　者：魏疆[1,2] 刘志辉[1] 赵丽莉 

机构地区：[1]新疆大学地理学科博士后流动站,新疆乌鲁木齐830046 [2]乌鲁木齐市天山区人民政府,新疆乌鲁木齐830002 [3]乌鲁木齐市环境监测中心站,新疆乌鲁木齐830044

出　　处：《新疆大学学报（自然科学版）》2011年第3期278-282,共5页Journal of Xinjiang University(Natural Science Edition)

基　　金：教育部重大创新资金培育项目(708090)

摘　　要：通过对乌鲁木齐市近12年(1997-2009)降水数据的月平均值分析,得出阴离子浓度在采暖期高于非采暖期.(SO42+NO3)/(Ca2++NH+4)比值在1.67～3.87之间,SO42和Ca2+分别是阴离子和阳离子中比重最大的离子,分别达到82.02%和61.93%,其比重变化直接影响着大气降水中的离子组分比例.SO42浓度随季节变化明显且幅度较大,Ca2+虽有变化但幅度较小.∑阴离子占总离子的百分比约是∑阳离子占总离子的1.6～3.3倍之间,煤炭消耗造成SO42离子大量存在,同时大量Ca2+离子的存在是保证乌鲁木齐市大气降水中阴阳离子平衡的前提.阴、阳离子占总离子比重呈双曲线对称管道形.We analysis the monthly average precipitation data between 1997--2009 in Urumqi. We find that during heating period （October- March） concentration of anions was higher than non-heating period. （SO4 2-＋NO3）/（Ca2＋＋NH＋） ratio was about 1.67-3.87. The proportion of SO4 2- and Ca2＋in anion and cation are maximum, they reached 82.02% and 61.93% respectively. They influence the property of precipitation chemical directly. SO4 2- concentration changes according to the season and its amplitude was large. The percentage of total anion was almost 1.6-3.3 times of total cation. Ca2＋also changes but its amplitude is small. Coal consumption produces more SO4 2- ,but it roughly balanced by Ca2＋.The percentage of anion and cation in total ion appears hyperbola symmetry duct.

关 键 词：离子浓度 双曲线对称 大气环境 污染 

分 类 号：X131.1[环境科学与工程—环境科学]