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我市属地方性氟中毒高发地区，近几年来，通过降氟改水，使水源水质发生了明显变化，现将水质前后进行监测对比报告如下：１ 采样及方法每个自然村在改水前后，各取东、西、南、北、中共五份水样，置于硬质玻璃或聚乙烯瓶（用前以稀硝酸浸泡，用馏水冲洗）送化验室检验。２
Our city is endemic to areas with high incidence of fluorosis, in recent years, by reducing fluoride to water, so that water quality has undergone significant changes, now the water quality monitoring comparison report as follows: 1 Sampling and Methods Before and after the water diversion in every village, Take five samples of water from east, west, south, north and the CCP and put them in hard glass or polyethylene bottles (soaked in dilute nitric acid before use, washed with distilled water) and sent to laboratory for examination. 2