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煤气热水器(亦称红外线取暖炉)所用能源为石油液化气,其成分为烷烃类,因燃烧不完全可产生过量的CO。本文报告了在普通居住条件下点燃煤气热水器导致动物中毒的试验。 1.试验方法:试验动物选狼狗3只和 相似文献
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沧州地区水源性高碘甲状腺肿的流行规律 总被引:1,自引:0,他引:1
This article describes a relationship between iodine and function and shape of thyroid gland. There was positive correlation between the prevalence rate of goiter and iodine content in drinking water [ln (10x)] and urine [ln (5x)]. Their curve fitting regression equations were y = 36.36 - 10.94 x + 0.83x2 and y = 22.39 - 6.36 x + 0.48x2 respectively. Use 3 per cent as criterion of disease area, threshold upper limit value of water and urinary iodine content should be 400 micrograms/L and 890 micrograms/gCr respectively. 相似文献
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通过实验和应用观察表明胶泥确实具有除氟作用,除氟后水质各项成份符合国家规定饮水卫生标准。胶泥除氟机理是由于伊利石(Al_2O_3)胶体对氟离子的吸附作用,除氟方法采用过滤井形式,该方法除氟经济、实用、可靠,适合沧州农村使用。 相似文献
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