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目的:探讨不同浸泡方法对饮水矿化材料中金属析出的影响。方法:选择不同浸泡温度、时间、不同pH值浸泡液和不同种类浸泡液对矿化材料进行浸泡试验,采用ICP-MS法测定浸泡液中铝、铬、砷的析出量。结果:不同浸泡温度对矿化材料中金属的析出量影响较大,特别是铝的析出;金属析出量随浸泡时间增大而增大,浸泡时间超过18 h后,金属的析出量随着浸泡时间增加变化较小;纯水浸泡矿化材料析出量要比自来水和配制水大。结论:浸泡温度、时间和不同pH值浸泡液对矿化材料中铝、铬、砷的析出有不同程度影响。
Objective: To investigate the effect of different soaking methods on the metal precipitation in mineralized drinking water. Methods: The immersion test of mineralized materials with different immersion temperature, time, different pH value immersion liquid and different kinds of immersion liquid was carried out. The amount of aluminum, chromium and arsenic in the immersion liquid was determined by ICP-MS. Results: Different immersion temperature had a great influence on the amount of metal in the mineralized material, especially the precipitation of aluminum. The amount of metal precipitation increased with the immersion time. When the immersion time exceeded 18 h, The change of time is small; the amount of pure mineral water soaking mineralized material precipitation than the tap water and the preparation of water. Conclusion: The soaking temperature, time and different pH value of soaking solution have different degrees of influence on the precipitation of aluminum, chromium and arsenic in the mineralized materials.