摘要
对黄海西部的千里岩、青岛的麦岛两个降水采样点 1 997、1 998两年所收集的 1 1 3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 1 0种离子成分的含量。计算了阴离子和阳离子的浓度总量 ,考察了∑ - /∑ +值 ,对所测 1 0种离子的含量顺序进行了探讨。结果表明 :1 1 0个样品离子平衡 (∑ - /∑ +在 0 75～ 1 2 5之间 ) ,3个样品离子不平衡。 1 998年千里岩降水中阴阳离子的含量 (摩尔浓度 )顺序为Cl- >Na+>Ca2 +>SO2 +4>NO-3 >NH+4>Mg2 +>H+>K+>F- ,麦岛降水中阴阳离子的含量顺序为Cl- >SO2 -4 >Na+>NH+4>Ca2 +>H+>NO-3 >Mg2 +>K+>F- 。千里岩降水属于海洋型降水 ,Cl- 、Na+含量高 ,而麦岛是海洋型和硫酸型降水 ,Cl- 、SO2 -4 含量高。
Totally, 113 precipitation samples were collected at Qianliyan Island (Western Yellow Sea) and Maidao (Qing dao) 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, and the sum concentrations of anions and cations were calculated, the ratio of ∑-/∑+ was also checked out of 10 major ions. The conclusion is that 110 samples is in ion balance (the ratio is in the range of 0 75～1 25), 3 samples isn’t in ion balance. In 1998, the concentration order of ions is Cl ->Na +>Ca 2+ >SO 2+ 4>NO - 3>NH + 4>Mg 2+ >H +>K +>F - in Qianliyan Island, Cl ->SO 2- 4>Na +>NH + 4>Ca 2+ >H +>NO - 3>Mg 2+ >K +>F - in Maidao, respectively. The concentration of Cl -、Na + is the highest among all the analyzed anions and cations in Qianliyan station,followed by SO 2- 4 and Ca 2+ . The concentration of Cl - and SO 2- 4 is the highest among all the analyzed ions in Maidao station. This can be explained that the kind of marine precipitation belongs to Qianliyan, the kind of marine precipitation and sulfate acid precipitation belongs to Maidao.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2000年第2期10-13,共4页
Marine Environmental Science
基金
国家自然科学基金!资助项目 ( 4 95762 97)
