黄海西部大气湿沉降(降水)的pH与主要酸碱离子的关系  

Relation of pH and major acid and alkaline ions in atmospheric wet deposition (precipitation) of Western Yellow Sea

作　　者：张金良 于志刚[2] 张经[2] 陈宁 

机构地区：[1]中国极地研究所,上海200129 [2]青岛海洋大学化学化工学院,山东青岛266003 [3]青岛市环境监测站,山东青岛266003

出　　处：《海洋环境科学》2000年第3期30-34,共5页Marine Environmental Science

基　　金：国家自然科学基金!资助项目 (495 76 2 97)

摘　　要：对黄海西部的千里岩、青岛的麦岛两个降水采样点 1997、1998两年所收集的 113个降水样品进行了分析 ,测定了H+ 、NH+ 4、K+ 、Na+ 、Ca2 + 、Mg2 + 、F-、Cl-、NO-3 、SO2 -4 共 10种离子成分的含量。分别用Na+ 、Mg2 +作为参考元素 ,计算了cnssCa2 + 、cnssSO2 -4 (nss即nonseasalt,非海盐贡献 )部分 ,并作了 pH与SO2 -4 /NO-3 、与 (nssCa2 + +NH+ 4) / (NO-3 +nssSO2 -4 )的相关分析。结果表明 :(1)以Mg2 + 作为参考元素计算得到的cnssCa2 + 、cnssSO2 -4 比以Na+ 作为参考元素所计算的结果更合理 ;(2 )SO2 -4 /NO-3 值麦岛高于千里岩 ,pH与SO2 -4 /NO-3 值之间基本上无相关性 ;(3)用Na+ 、Mg2 + 两种参考元素计算得到的 (nssCa2 + +NH+ 4) / (NO-3 +nssSO2 -4 )值相一致 ,该比值与 pH的相关性均比较明显。precipitation samples were collected at Qianliyan Island (western Yellow Sea) and Maidao from 1997 to 1998, and the concentrations for 10 major ions, including H +、NH + 4、K +、 Na +、 Ca 2+ 、Mg 2+ 、F -、Cl -、NO - 3、SO 2- 4 were determined. A comparison was made between Mg 2+ and Na + as the reference element for calculating the part of the non sea salt (nss) contribution. The correlations about pH and SO 2- 4/NO - 3、pH and (nssCa 2+ +NH + 4)/(NO - 3+nssSO 2- 4)、 pH and nssCa 2+ 、NH + 4、NO - 3nssSO 2- 4 were analyled. The conclusions are: (1) Mg 2+ is more reasonable to use as a reference element and to calculate c nssCa 2+ 、 c nssSO 2- 4 than Na +; (2) The ratio of SO 2- 4/NO - 3 for Maidao was higher than Qianliyan, there were barely correlation between pH and SO 2- 4/NO - 3; (3) The result is almost same when to use Na +、Mg 2+ as reference element to calculate the ratio of (nssCa 2+ +NH + 4)/(NO - 3+nssSO 2- 4). The correlation is significant between pH and (nssCa 2+ +NH + 4)/(NO - 3+nssSO 2- 4).

关 键 词：黄海西部 湿沉降 降水 主要酸碱离子 酸雨 PH值 

分 类 号：X831.03[环境科学与工程—环境工程] X517.02