【摘要】 目的调查沧州市居民饮用水中的碘含量,为水碘的地理分布区域划分以及甲状腺疾病的防治提供科学合理的依据。方法调查沧州市16个县(市、区),采用10%抽样法,每个县(市、区)按东、西、南、北、中地理区域划分5个抽样片区,所选定区域同样按照以上地理区域划分,每个片区根据区域大小随机抽取行政村(居委会)采集水样,采用砷铈催化分光光度法测定水样碘含量。结果 2016年3-12月在沧州市共调查82个乡镇463个村,采集水样1 002份,水样来源包括951份地下水和51份地表水。测得水样中碘含量范围3.1224～1 192.0729μg/L,水碘含量中位数为113.4902μg/L。沧州市西、北部地区水碘中位数<10μg/L的乡镇有42个,占总乡镇数的21.76(%),覆盖人口数约130.2万。沧州市中、南、东部地区水碘中位数大于100μg/L的乡镇有93个,占总乡镇数的48.19 (%),覆盖人口数约337.36万。将水碘含量与沧州市地理区域图结合,绘制得到沧州市居民饮用水碘地理分布图。结论沧州地区居民饮用水中碘含量地理分布不均匀,西、北部低碘区与东、南部高碘地区分布差异明显,总体碘含量地域分布为西低东高。更多还原

【Abstract】 Objective The aim of this study was to investigate iodine content in residents’ drinking water in Cangzhou city, in order to provide scientific and reasonable evidence for the geographical distribution of iodine and the prevention and treatment of thyroid disease. Methods 10% sampling method was used to investigate 16 counties(city, area) in Cangzhou. Each county(city, area) was geographically split into northern, southern, eastern, western and central regions. The selected one from the above five regions(town, street offices) was in accordance with the above same geographical division. According to area size,the administrative villages(neighborhood committees) were sampled randomly and then the water samples were collected.Arsenic-cerium catalytic spectrophotometry was used to determine iodine content in water. Results A total of 82 towns and463 villages were investigated in Cangzhou city from March to December in 2016. 1002 water samples including 951 samples of ground water and 51 samples of surface water were collected. The iodine content of the samples was measured from3.1224-1192.0729 μg/L, and the median iodine content in the water was 113.4902 μg/L. There were 42 towns with a median of 10 μg/L of water iodine in the western and northern regions of Cangzhou, accounting for 21.76 % of the total number of towns, covering a population of about 1.302 million. The median amount of water iodine in the central, southern and eastern regions of Cangzhou city was greater than 100 μg/L, and there were 93 towns with high iodine content in drinking water,accounting for 48.19 % of the total number of villages and towns, covering a population of about 3,373,600. The geographical distribution map of drinking water iodine in Cangzhou city was drawn by combining the results of water iodine content with the geographical map of Cangzhou city. Conclusion The geographical distribution of iodine content in drinking residential water in Cangzhou area was not uniform. The distribution of iodine content in low iodine areas in the western and northern regions is obviously different from that in high iodine areas in the eastern and southern region, and the overall geographical distribution of iodine content was low in the western region and high in the eastern region.更多还原