In this paper,the feasibility of non-well-flushing method for sampling was analyzed by comparing the sample representativeness before and after well-flushing.Sampling was carried out when the flow rate of groundwater in monitoring wells was 0.1 L/min ～ 0.5 L/min using microperturbation sampler without well-flushing.The comparative study on the concentration of conventional inorganic ion and 5 physical indicators before and after well-flushing showed that the samples taken by these two methods were very closed.In six monitoring wells,p value was greater than 0.05 (significant) and the verification probability F was less than Fcrit (F ＜ F crit),which indicated that at 95％ confidence level,inorganic chemical parameters had no significant difference before and after well-flushing.%将非洗井法采样筛管部位取样的可行性和洗井前后样品代表性作对比,当监测井中地下水流量为0.1 L/min～0.5 L/min时,用微扰动采样器在非洗井情况下采样.洗井前后常规无机离子浓度和5种物理指标的研究对比结果显示,在非洗井情况下用微扰动地下水采样器在筛管部位取样的样品与洗井之后的样品十分接近.6口监测井水中无机离子含量单方向方差分析结果显示,p值＞0.05(显著性),验证概率F＜F crit,表明在95％的置信度上可总结为无机化学参数在洗井前后无显著性差异.
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