摘要
目的探讨不同浸泡方法对饮水矿化材料卫生安全性试验的影响。方法选择不同种类浸泡水[自来水、纯水、配制水(pH=8,硬度为100mg/L,有效氯浓度为2mg/L)]、不同浸泡温度(5～40℃)、不同浸泡时间(6～42h)和不同pH值(5～9)浸泡液对不同矿化材料(主要成分为麦饭石)进行浸泡试验。结果浸泡水中铝、砷、铬的析出量均有超标,矿化材料经纯水处理后浸泡液中各种元素的析出量要高于自来水和配制水;浸泡液pH值的变化对析出量的影响较小。浸泡温度对有害物质析出量的影响较大,随着浸泡温度(5～40℃)的升高,其析出量也在增加,铝增加了将近7倍,钒、钼增加近4倍,铬、砷增加了5倍左右。浸泡时间超过18h后,大部分有害物质的析出量变化随着浸泡时间的延长而减小。结论在对饮水矿化材料进行卫生安全性试验时,浸泡水的选择较为重要,并应对温度进行控制。
Objective To know the influence of different soaking methods on hygienic safety test of mineralized materials used in drinking water. Methods Different soaking water（tap water, pure water, prepared water）, different soaking temperature（5- 40 ℃）, time（6-42 h） and pH（5-9） were chosen for the soaking test of mineralized materials. Results The content of A1, Cr and As separated from some mineralized materials had exceeded the provided standard. Soaking with pure water, the concentration of elements was higher compared with tap water and prepared water, pH value of soaking water showed little influence. The separated content was affected remarkably by soaking temperature. Temperature increased from 5 ℃ to 40 ℃, the content of A1 increased nearly by 7 times, V and Mo by 4 times, and Cr and As by 5 times. After 18 h-soaking, the change of the separated content for most elements decreased with the time went on. Conclusion It is important to choice soaking water for safety test of mineralized materials used in drinking water. The temperature of soaking test must be controlled.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2010年第6期518-519,共2页
Journal of Environment and Health
基金
广东省医学科学技术研究基金资助项目(A2008083)
关键词
水
矿化材料
浸泡方法
卫生安全性
Water
Mineralized material
Soaking method
Safety test
