5、特市范围内的46个观测井水样的有关水化学参数进行统计分析,得到地下水主要离子特征见表1。Table1Statisticsofhydrochemicalparametersofgroundiddot;L-1)0.270.820.44880.171240.381551 K+/(mgL-1)0.627.592.361.431480.606559 Na+/(mgL-1)13.3165.244.46138.46850.865219 Ca2+/(mgL-1)39.7915882.970431.834110.38368 M