2008年“5·12”地震后四川局部区域水体离子特征  

The Characters of Ion Concentration in Sichuan After Earthquake Occurred on 12th May,2008

作　　者：刘伟龙[1] 邓伟[1] 王根绪[1] 周俊[1,2] 

机构地区：[1]中国科学院水利部成都山地灾害与环境研究所,成都610041 [2]中国科学院研究生院,北京100039

出　　处：《水土保持研究》2009年第6期40-45,共6页Research of Soil and Water Conservation

基　　金：国家重点基础研究发展计划(2006CB403301);中科院成都山地所灾后应急基金

摘　　要：2008年四川"5.12"地震对人民生命和生活造成巨大的破坏。为对震后水环境的现状进行一个面上的调查,2008年6月对受地震影响四川局部地区的水取样分析。对66个水样中8大离子的分析结果表明,水体中阳离子的含量特征均为Ca2+>Mg2+>Na+>K+,而阴离子平均含量依次为SO42->NO3->Cl->PO43-。Ca2+在水井中的含量最高,PO34-在水体中含量最低,66个采样点中有16个水样未检出PO43-。井水中离子含量在所有采样区中最高。除PO43-含量在河流中的含量最高外,其余各离子在水井中的含量居7个分类采样区之首;地裂缝渗出的水中Ca2+、Na+、Cl-仅次于井水含量居第二。在空间位置上水体中Na/Ca比值在0.106上下波动。The earthquake occurred in Sichuan province on May 12, 2008 was China＇s most devastating earthquake since the 1976 Tangshan earthquake catastrophe. The most immediate concerns after the disaster are human casualties, injury and property destruction. Water environment problems induced by the earthquake for human health and economic development are one of the primary concerns before the recon struction after the disaster. Water was sampled in the earthquake--affected area in June, 2008 for detec- ting the ion concentration. The results of 66 water samples show that the cations concentration character is Ca2＋〉Mg2＋〉Na＋〉K＋, while the anions＇ is SO4^2-〉NO2-〉Cl-〉PO4^3-. The highest concentration of Ca2＋ is in the wells while the lowest concentration of PO4^3- in all samples. PO4^3- is not detected in the 16 of 66 samples. All ions except PO4^3- concentration is the highest in the well. Ca2＋ ,Na＋ ,Cl- in the ground fissures is higher than other regions except wells. The Na/Ca ratio fluctuates at 0. 106 in the all sampling areas.

关 键 词：汶川5·12地震 四川 水环境 离子 

分 类 号：P342.1[天文地球—水文科学]