中文摘要：

针对地下水质量综合评价中规避pH值作为评价因子的事实，提出了pH值在地下水质量评价中的“双序列”问题，按照将“负序列”pH值映射到相应级别“正序列”上的思路，给出了地下水质量评价中pH值“单序列化”的方法，解决了将pH值作为地下水质量综合评价因子的困难．

英文摘要：

In appraising view of the most valuable dodge that makes the pH value as the appraise factor in ground water quality the paper proposed the double sequence problem of the pH value performance in ground water quality appraising. According to the mentality which will map the negative sequence of the pH value to the positive sequence in the corresponding rank, the paper proposed the pH value list serializing method, solving the difficulty which takes the pH value as the factor in the ground water quality synthetic appraising.