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目的了解江西省不同土壤和水中碘含量情况,为因地制宜地科学补碘提供依据。方法 2014年按不同土壤类型在宁都等5个县分别采集水样和土壤样以测定其碘含量,每个县分别按东、西、南、北、中选择1个典型的村作为调查点.每个调查点分别采集河塘水、稻田水和饮用的自来水或井水各4份,另采集稻田土、河塘岸边地表土壤和饮用水水源旁土壤各1份,水碘用硫酸铵-砷铈催化分光光度法测定,土壤碘用四碱分光光度法测定。结果土壤碘中位数为1.40 mg/kg,水碘中位数为5.38μg/L。不同类型稻田土壤碘含量有统计学差异,且以红壤稻田土壤的碘含量最高(H=11.652,P<0.05)。不同类型土壤地区的河塘水(H=13.21,P<0.001)、饮用水(H=15.29,P<0.001)和稻田水(H=21.53,P<0.001)碘含量均有统计学差异。土壤碘含量和水碘含量无相关性。结论江西省属缺碘地区,不同环境中水碘、土壤碘含量不同,要因地制宜以科学补碘。
Objective To understand the iodine content in different soils and water in Jiangxi Province and provide the basis for scientific supplementation of iodine according to local conditions. Methods In 2014, the water samples and soil samples were collected from 5 different counties in Ningdu, including Ningxia, to determine the iodine content. A typical village was selected from each of the four counties in East, West, South, North and North as the survey site. Each survey point were collected river water, paddy water and drinking tap water or well of 4 copies each, and the other collection of paddy soil, river pond shore surface soil and drinking water sources next to each of the soil, water iodine with ammonium sulfate - Determination of arsenic and cerium by catalytic spectrophotometry, soil iodine by spectrophotometry. Results The soil iodine median was 1.40 mg / kg and the median water iodine was 5.38 μg / L. The iodine content in different types of paddy soils was significantly different, and the content of iodine in paddy soil was the highest (H = 11.652, P <0.05). There was significant difference in the contents of iodine (H = 13.21, P <0.001), drinking water (H = 15.29, P <0.001) and paddy water (H = 21.53, P <0.001) in different soil types. There is no correlation between soil iodine content and water iodine content. Conclusions Jiangxi Province is an area lacking iodine. In different environment, iodine content in soil and water is different, so iodine should be scientifically supplemented according to local conditions.