北方某典型大气污染城市冬季降水的阴离子成分及对发光菌活性的影响  

Analysis on Anionic Composition of Atmospheric Water of a Typical Air Pollution City in Northern China in Winter and its Effect to the Activity of Luminescent Bacteria

作　　者：张建江[1] 贾继民[1] 王君[2] 马永红[1] 田华[1] 邱尔臣[1] 宋远新[1] 

机构地区：[1]新疆军区疾病预防控制中心,新疆乌鲁木齐830011 [2]乌鲁木齐市疾病预防控制中心免疫规划科

出　　处：《实用预防医学》2013年第2期185-187,共3页Practical Preventive Medicine

基　　金：兰州军区医药卫生科研项目课题(No.CWS10JA27)

摘　　要：目的分析北方某典型大气污染城市(M市)冬季降水的阴离子成分及对发光菌生物活性的影响。方法于2011-2012年冬季采暖期采集冬季降水,分别采用酸度计、电导率仪、离子色谱仪对样品进行指标检测。并用智能生物毒性测试仪观察降水对明亮发光杆菌(Photobacterium phosphoreum)T3变种生物活性的影响。结果采集到的11次冬季降水的pH变化范围为6.51～8.38,平均值为7.26,电导率的变化范围为192.2～1 343.0μS/cm,平均值为803.0μS/cm,SO42-的平均值为69.20 mg/L,Cl-的平均值为16.20 mg/L,NO3-的平均值为2.28 mg/L,F-的平均值为1.24mg/L。11次降水4种阴离子浓度大小顺序均为SO42->Cl->NO3->F-。M市冬季降水导致的发光菌发光损失率为4.31%～16.09%,平均值为10.12%。结论 M市冬季降水整体为中性偏碱,最主要的阴离子成分为SO42-,冬季取暖燃料的燃烧可能是其重要的来源。冬季降水对发光菌的生物活性产生了轻微的抑制作用。Objective To analyze the anionic composition of atmospheric water of a typical air pollution city （M city） in northern China in winter and its impact on biological activity in vitro of luminescent bacteria. Methods Atmospheric water samples were collected in the winter heating period from 2011 to 2012. The water samples were detected and analyzed respective- ly by pH meter, conductivity meter, and ion chromatography. The impact of atmospheric water on biological activity of Photo- bacterium phosphoreum T3 variants in vitro was observed using intelligent biological toxicity testing instrument. Results Among atmospheric water samples collected in 11 winters, pH changing ranges were between 6.51 and 8.38, with the average value of 7.26. The changing ranges of conductivity were between 192.2 and 1,343.0/iS/cm, with the average value of 803.0 μS/cm. The average values of SO4^2- , Cl^-, NO3^-, and F were 69.20 mg/L, 16.20 mg/L, 2.28 rag/L, and 1.24 mg/L, respectively. The anion concentrations in order of size were SO4^2- 〉 Cl^- 〉 NO3 ^- 〉 F^-. The luminescent loss rates resulted from atmospheric water in winter among luminescent bacteria were between 4.31% and 16.09 %, with the average rate of 10.12 %. Conclusions Atmospheric water of M city in 11 winters basically maintains neutral and slightly alkaline character. The main anion is SO4^2- , and fuel combustion of winter heating may be an important source. Atmospheric water in winter produces a slight inhibition to the biological activity of luminescent bacteria.

关 键 词：冬季降水 成分 发光菌 

分 类 号：R122.7[医药卫生—环境卫生学]