摘要
目的 调查河南省水源性高碘地区水中碘的存在形态.方法 2013年12月至2014年1月在河南省高碘地区（濮阳、新乡、开封和商丘）,选择50个停供碘盐和集中供水均在5年（含）以上的村、乡、镇的水厂,每个水厂采集3份末梢水水样,采用碘-淀粉分光光度法测定水中碘含量以及鉴别水中碘存在形态,分析河南省高碘地区水碘存在的形态与分布情况.结果 共采集了403份水样,其中286份水样符合条件（水碘≥80 μg/L）.符合条件水样中,6份以碘离子形态存在,139份以碘酸根离子和碘离子混存形态存在,141份以碘酸根离子形态存在.水碘含量＜ 150 μg/L的样品中,以碘酸根离子和碘离子混存形态的样品占26.67％（12/45）,以碘酸根离子形态存在的样品占73.33％（33/45）.水碘含量在150～ 299μg/L的样品中,以碘酸根离子和碘离子混存形态的样品占79.67％（98/123）,以碘酸根离子形态存在的样品占24.39％（30/123）,以碘离子形态存在的样品仅占4.88％（6/123）.水碘含量≥300 μg/L的样品中,以碘酸根离子和碘离子混存形态的样品占81.81％（9/11）,以碘离子形态存在的样品占18.18％ （2/11）.结论 河南省水源性高碘地区,水源中的水碘存在碘离子和碘酸根离子形态,以碘酸根离子、碘离子和碘酸根离子混存两种形态为主,未发现以高碘酸根离子形态存在的水源.
Objective To investigate the forms of water iodine in areas with excessive iodine in water of Henan Province.Methods From December 2013 to January 2014,50 water plants in 4 cities （Puyang,Xinxiang,Kaifeng and Shangqiu cities） of Henan Province were selected from the areas with excessive iodine in water where iodized salt and centralized water supply were stopped for more than 5 years.In each selected water plant,3 water samples were collected.I2-Starch Spectrophotometer was used to measure the iodine content and identify the forms of iodine in water samples.Results A total of 403 water samples were collected and ultimately 286 samples met the requirement （water iodine ≥ 80 μg/L）.Among the 286 samples,iodine existed in the forms of iodide in 6 water samples,of both iodate and iodide in 139 water samples,and of iodate in 141 water samples.In water samples with iodine content lower than 150 μg/L,the proportions of forms of iodide and both iodate and iodide,were 26.67％ （12/45） and 73.33％ （33/45）,respectively.In water samples with iodine content between 150-299 μg/L,the proportions of the forms of iodide,both iodate and iodide,and iodate,were 4.88％ （6/123）,79.67％ （98/123） and 24.39％ （30/123）,respectively.In water samples with iodine content higher than 300 μg/L,the proportions of the forms of iodide and both iodate and iodide,were 18.18％ （2/11） and 81.81％ （9/11）,respectively.Conclusions In areas with excessive water iodine in Henan Province,iodine mainly exists in the forms of iodate,or both iodate and iodide.No sample is found to contain periodate.
出处
《中华地方病学杂志》
CAS
CSCD
北大核心
2015年第3期172-174,共3页
Chinese Journal of Endemiology
基金
国家公益项目卫生行业科研专项（201202012）
关键词
饮水
碘
化学
分析
Drinking water
Iodine
Chemical, analysis
