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首页> 外文期刊>African Journal of Food, Agriculture, Nutrition and Development >Concentrations of formaldehyde in rain waters harvested at the Nigerian institute for oil palm research
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Concentrations of formaldehyde in rain waters harvested at the Nigerian institute for oil palm research

机译：尼日利亚油棕研究所收集的雨水中的甲醛浓度

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Formaldehyde has been recognized as one of the most important pollutants and a carcinogen that is present in the air, water, foods, soils, fabrics, cosmetics, cigarette smoke and treated wood. Related health effects and hazards are linked to formaldehyde, depending on mode of exposure which includes: weakness, blindness, vomiting et cetera. Additionally, occupational exposure through vapours, results in a temporary reversible decrease in lung function. Ocular exposure to formaldehyde could result in permanent alterations to vision or blindness. At concentrations below maternal toxicity, formaldehyde is considered not to be a reproductive or developmental toxicant. Sufficient evidence is now available for the carcinogenicity of formaldehyde in both humans and animals. The International Agency for Research on Cancer has classed formaldehyde as a group 1carcinogen. Rain water is harvested and used for domestic and industrial purposes in Nigeria. Scarce information isavailable in the developing countries like Nigeria, relating to the sources of exposure to formaldehyde and other toxic substances. It was against the above background that samples of rain water were collected between April and October, 2008, 2009 and 2010 at the meteorological research unit of the Nigerian Institute for Oil Palm Research (NIFOR) in order to monitor the concentrations of formaldehyde, which were subsequently consumed by ingestion and thus generate data on same for the populace of the area of study. The chromotropic acid method described by the National Institute for Occupational Safety and Health (NIOSH) was adopted for the determination of formaldehyde in the rain waters. Results indicated that the concentration range of the formaldehyde in the rain waters varied from month to month throughout the six months duration of analysis. The values detected were below the toxicity level recommended by the World Health Organization (WHO) and other world bodies for drinking water. In conclusion, the results of the rain waters collected for the period of assay suggests that the values did not cause any toxicity effects and thus were fit for human consumption based on the low formaldehyde concentrations.
机译：甲醛已被认为是最重要的污染物之一，也是空气，水，食物，土壤，织物，化妆品，香烟烟雾和经处理的木材中存在的致癌物。相关的健康影响和危害与甲醛有关，取决于接触方式，包括：虚弱，失明，呕吐等。此外，通过蒸气的职业性接触会导致肺功能暂时可逆的下降。眼睛长期接触甲醛可能会导致视力或失明的永久性改变。在低于母体毒性的浓度下，甲醛被认为不是生殖或发育毒性。现在有足够的证据表明甲醛对人和动物都具有致癌性。国际癌症研究机构已将甲醛归为1类致癌物。在尼日利亚，雨水被收集并用于家庭和工业用途。在像尼日利亚这样的发展中国家，缺乏有关甲醛和其他有毒物质的暴露来源的信息。在上述背景下，2008年4月至2008年10月，2009年至2010年期间在尼日利亚油棕研究所（NIFOR）的气象研究部门收集了雨水样品，以监测甲醛的浓度。随后被摄入所消耗，从而针对该研究区域的人口生成相同的数据。国家职业安全与健康研究所（NIOSH）描述的变色酸法用于测定雨水中的甲醛。结果表明，在整个六个月的分析过程中，雨水中甲醛的浓度范围每个月都在变化。检测到的值低于世界卫生组织（WHO）和其他世界机构对饮用水的推荐毒性水平。总之，在分析期间收集的雨水的结果表明，该值没有引起任何毒性影响，因此基于低甲醛浓度，适合人类食用。

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