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首页> 外文期刊>Environmental health perspectives. >Arsenic and fluoride exposure in drinking water: children's IQ and growth in Shanyin county, Shanxi province, China.
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Arsenic and fluoride exposure in drinking water: children's IQ and growth in Shanyin county, Shanxi province, China.

机译：饮用水中砷和氟化物的暴露：山西省山阴县儿童的智商和成长。

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BACKGROUND: Recently, in a cross-sectional study of 201 children in Araihazar, Bangladesh, exposure to arsenic (As) in drinking water has been shown to lower the scores on tests that measure children's intellectual function before and after adjustment for sociodemographic features. OBJECTIVES: We investigated the effects of As and fluoride exposure on children's intelligence and growth. METHODS: We report the results of a study of 720 children between 8 and 12 years of age in rural villages in Shanyin county, Shanxi province, China. The children were exposed to As at concentrations of 142 +/- 106 microg/L (medium-As group) and 190 +/- 183 microg/L (high-As group) in drinking water compared with the control group that was exposed to low concentrations of As (2 +/- 3 microg/L) and low concentrations of fluoride (0.5 +/- 0.2 mg/L). A study group of children exposed to high concentrations of fluoride (8.3 +/- 1.9 mg/L) but low concentrations of As (3 +/- 3 microg/L) was also included because of the common occurrence of elevated concentrations of fluoride in groundwater in our study area. A standardized IQ (intelligence quotient) test was modified for children in rural China and was based on the classic Raven's test used to determine the effects of these exposures on children's intelligence. A standardized measurement procedure for weight, height, chest circumference, and lung capacity was used to determine the effects of these exposures on children's growth. RESULTS: The mean IQ scores decreased from 105 +/- 15 for the control group, to 101 +/- 16 for the medium-As group (p < 0.05), and to 95 +/- 17 for the high-As group (p < 0.01). The mean IQ score for the high-fluoride group was 101 +/- 16 and significantly different from that of the control group (p < 0.05). Children in the control group were taller than those in the high-fluoride group (p < 0.05); weighed more than the those in the high-As group (p < 0.05); and had higher lung capacity than those in the medium-As group (p < 0.05). CONCLUSIONS: Children's intelligence and growth can be affected by high concentrations of As or fluoride. The IQ scores of the children in the high-As group were the lowest among the four groups we investigated. It is more significant that high concentrations of As affect children's intelligence. It indicates that arsenic exposure can affect children's intelligence and growth.
机译：背景：最近，在孟加拉国阿拉伊哈扎尔（Araihazar）的201名儿童的横断面研究中，暴露于饮用水中的砷（As）已显示出降低在调整社会人口统计学特征前后测量儿童智力功能的测试中的分数。目的：我们研究了砷和氟化物暴露对儿童智力和成长的影响。方法：我们报告了一项在中国山西省山阴县农村村庄对720名8至12岁儿童进行研究的结果。与对照组相比，这些儿童的饮用水中砷的暴露浓度分别为142 +/- 106微克/升（中等砷组）和190 +/- 183微克/升（高砷组）。低浓度的As（2 +/- 3 microg / L）和低浓度的氟化物（0.5 +/- 0.2 mg / L）。一个研究小组的儿童暴露于高浓度的氟化物（8.3 +/- 1.9毫克/升）而低浓度的砷（3 +/- 3毫克/升）也被包括在内，因为在儿童中氟化物的浓度普遍升高。我们研究区域的地下水。对中国农村地区的儿童进行了标准化的智商（智商）测试，该测试基于经典的Raven测验，该测验用于确定这些暴露对儿童智力的影响。体重，身高，胸围和肺活量的标准化测量程序用于确定这些暴露对儿童成长的影响。结果：平均智商得分从对照组的105 +/- 15降低到中度As组的101 +/- 16（p <0.05）和高度As组的95 +/- 17（p <0.05）。 p <0.01）。高氟化物组的平均智商得分为101 +/- 16，与对照组相比有显着差异（p <0.05）。对照组的孩子比高氟组的孩子高（p <0.05）;重于高砷组（p <0.05）;且肺活量高于中砷组（p <0.05）。结论：高浓度的砷或氟化物会影响儿童的智力和成长。在我们调查的四组中，高As组儿童的智商得分最低。更重要的是高浓度的砷会影响儿童的智力。这表明砷暴露会影响儿童的智力和成长。

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