中国环境管理干部学院学报
中國環境管理榦部學院學報
중국배경관리간부학원학보
Journal of the Environmental Management College of China - EMCC
2015年
5期
62-64,71
,共4页
大气降水%化学特征%离子浓度
大氣降水%化學特徵%離子濃度
대기강수%화학특정%리자농도
atmospheric precipitation%chemical characteristic%ion concentration
对铜川市2014年大气降水样品监测资料的综合分析和研究表明, 该地区降水样品pH值介于6.57~7.19之间, 降水量加权平均pH值为6.85; Ca2+和NH4+是降水中主要的阳离子, 分别占降水中阳离子总量的69.8%和12.9%; SO42-和NO3-是降水中主要的阴离子, 分别占降水中阴离子总量的56.4%和30.3%. 降水中 [SO42-] 与 [NO3-] 浓度比值为1.86, 属硫酸-硝酸混合型降水. 降水离子相关分析表明, SO42-和F-相关性较好, Ca2+与SO42-(R=0.925)、NO3-(R=0.791)的相关系数分别大于NH4+与SO42-(R=0.549)、 NO3-(R=0.385)的相关系数, 说明研究区大气降水主要以CaSO4、 Ca(NO3)2、(NH4)2SO4的形式存在, Ca2+对降水酸度的中和作用大于NH4+.
對銅川市2014年大氣降水樣品鑑測資料的綜閤分析和研究錶明, 該地區降水樣品pH值介于6.57~7.19之間, 降水量加權平均pH值為6.85; Ca2+和NH4+是降水中主要的暘離子, 分彆佔降水中暘離子總量的69.8%和12.9%; SO42-和NO3-是降水中主要的陰離子, 分彆佔降水中陰離子總量的56.4%和30.3%. 降水中 [SO42-] 與 [NO3-] 濃度比值為1.86, 屬硫痠-硝痠混閤型降水. 降水離子相關分析錶明, SO42-和F-相關性較好, Ca2+與SO42-(R=0.925)、NO3-(R=0.791)的相關繫數分彆大于NH4+與SO42-(R=0.549)、 NO3-(R=0.385)的相關繫數, 說明研究區大氣降水主要以CaSO4、 Ca(NO3)2、(NH4)2SO4的形式存在, Ca2+對降水痠度的中和作用大于NH4+.
대동천시2014년대기강수양품감측자료적종합분석화연구표명, 해지구강수양품pH치개우6.57~7.19지간, 강수량가권평균pH치위6.85; Ca2+화NH4+시강수중주요적양리자, 분별점강수중양리자총량적69.8%화12.9%; SO42-화NO3-시강수중주요적음리자, 분별점강수중음리자총량적56.4%화30.3%. 강수중 [SO42-] 여 [NO3-] 농도비치위1.86, 속류산-초산혼합형강수. 강수리자상관분석표명, SO42-화F-상관성교호, Ca2+여SO42-(R=0.925)、NO3-(R=0.791)적상관계수분별대우NH4+여SO42-(R=0.549)、 NO3-(R=0.385)적상관계수, 설명연구구대기강수주요이CaSO4、 Ca(NO3)2、(NH4)2SO4적형식존재, Ca2+대강수산도적중화작용대우NH4+.
The comprehensive analysis and research about the monitoring data of atmospheric precipitation samples of Tongchuan City in 2014 indicated that the pH value of the precipitation samples in this area was 6.57~7.19, with the weighted average pH value 6.85. The Ca2+and NH4+were the main positive ions in the precipitation, accounting for 69.8%and 12.9%respectively among the total precipitation positive ions. SO42- and NO3- were the major anions in precipitation, which accounted for 56.4% and 30.3% of the total anions. The ratio of [SO42-] to [NO3-] in precipi-tation was 1.86, which was mixed with sulfuric acid and nitric acid. The correlationanalysis showed that the correlation coefficient between F- and SO42- was good. The correlation coefficients of Ca2+ and SO42-(R=0.925), NO3-(R=0.791) were higher than NH4+ and SO42-(R=0.549), NO3-(R=0.385), which showed that the atmospheric precipitation in the study area was CaSO4, Ca (NO3)2, (NH4)2SO4, and Ca2+was more than NH4+.