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GB/T 1608-2017 工业高锰酸钾 Potassium permanganate for industrial use
本标准规定了工业高锰酸钾的要求、试验方法、检验规则及标志、标签、包装、运输、贮存和安全。<br />本标准适用于工业高锰酸钾。该产品主要用于化学工业、冶金工业、环保、农业及养殖等方面,也用作生活水处理剂、防腐剂、清毒剂及制药工业的原料。...
2023-08-24 01:00:01浏览:26
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GB 31604.2-2016 食品安全国家标准 食品接触材料及制品 高锰酸钾消耗量的测定
本标准规定了食品接触材料及制品中高锰酸钾消耗量的测定方法。<br />本标准适用于食品接触材料及制品中高锰酸钾消耗量的测定。...
2023-06-14 19:12:01浏览:36
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常温时添加剂对Ce-Mn转化膜的影响
为了提高常温下Ce-Mn转化膜在铝合金表面的成膜速度和耐腐蚀性能,在室温、pH=2的Ce(NO3)3和KMnO4的混合溶液中分别添加H3BO3、Zr(SO4)2、NaF、HF、NaBF4和Na2ZrF66种添加剂,研究添加剂对Ce-Mn转化膜的影响.通过光学显微镜、涡流测厚仪、点滴腐蚀法、Tafel极化曲线和交流阻抗等研究了膜的金相组织、厚度及耐腐蚀性能等;同时,通过SEM和EDS研究了氟化钠对膜的形貌和成分的影响.结果表明:氟化钠是较佳的常温成膜促进剂,常温下9min就能成膜,相对于无添加剂的Ce-Mn转化膜,膜厚增加2.3倍,耐点滴腐蚀时间延长2.0倍,腐蚀电流密度降低至原来的1/3,膜电阻提高3.9倍:添加NaF后膜的铈含量从5.14%提高到8.59%,锰含量从7.70%提高到14.42%....
2020-12-06 21:11:24浏览:66
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Drinking water safety and the development of purification technology
This paper briefly introduced the evolution of purification technology for drinking water over time. After description of the 1st generation processes in the beginning of the 20th century -- conventional processes and the 2nd generation processes in 1970s -- advanced treatment processes, a tertiary processes -- UF (ultrafiltration) based on integrated processes was proposed. Moreover, reaction measures (dosing variety of regents for different contaminants) for urban source water emergencies.were illustrated in brief. A new technology of KMnO4 and potassium permanganate composite (PPC) for drinking water purification which was developed by Harbin Institute of Technology (HIT) was concisely introduced....
2020-07-08 08:49:41浏览:76
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