CAJ | 학술논문

为了解辽宁省背景地区降水化学特征及其与大气传输的关系,于2007年2月—2008年1月在辽中县水文监测站进行了降水化学特征观测,测量项目包括降水pH,电导率和离子浓度. 观测期间降水pH为3.4～7.3,降水量加权平均值为4.6,整体呈酸性. 降水中主要阴离子为SO_4~(2-)和NO_3~-,浓度分别为154.3和53.4 μeq/L,二者占阴离子总量的76.8%;主要阳离子为NH_4~+和Ca~(2+),浓度分别为124.6和89.2 μeq/L,占阳离子总量的70.6%. 利用后向气流轨迹分析了降水气团来源对降水化学的影响,结果表明:在辽宁省及周边地区的局地气团影响下,降水中离子浓度最高;而在起源于东亚地区,经朝鲜半岛到达的南-东南气团影响下,降水次数虽最多,但离子浓度最低.
위료해요녕성배경지구강수화학특정급기여대기전수적관계,우2007년2월—2008년1월재료중현수문감측참진행료강수화학특정관측,측량항목포괄강수pH,전도솔화리자농도. 관측기간강수pH위3.4～7.3,강수량가권평균치위4.6,정체정산성. 강수중주요음리자위SO_4~(2-)화NO_3~-,농도분별위154.3화53.4 μeq/L,이자점음리자총량적76.8%;주요양리자위NH_4~+화Ca~(2+),농도분별위124.6화89.2 μeq/L,점양리자총량적70.6%. 이용후향기류궤적분석료강수기단래원대강수화학적영향,결과표명:재요녕성급주변지구적국지기단영향하,강수중리자농도최고;이재기원우동아지구,경조선반도도체적남-동남기단영향하,강수차수수최다,단리자농도최저.
To better understand the characteristics of precipitation chemistry and its relationship with atmospheric transport at a background site in Liaoning Province, pH, conductivities and ionic concentrations of rain samples were analyzed at Liaozhong hydrological site from February 2007 to January 2008. pH was found to range from 3.4 to 7.3, with a precipitation volume weighted average of 4.6, representing generally acidic acidity. The major anions, SO_4~(2-) and NO_3~-, were found to be 154.3 and 53.4 μeq/L respectively and occupied 76.8% of all anions. With concentrations of 124.6 and 89.2 μeq/L respectively, the NH_4~+ and Ca~(2+) occupied 70.6% of all cations. Backward trajectory analysis was conducted to gain further insights into the influence of the origination and travelling path of air masses on the chemical composition of the collected rain samples. The results suggest that the samples with high ion concentrations were found to be mainly influenced by locally originated air masses, while those with lower ion values were mainly caused by south-southeast air masses originating from Eastern Asia and then traveling across the Korean peninsula.