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非有机溶剂萃取光度法测定铝酸钠溶液中的镓的方法研究 被引量:3
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作者 王倩 《轻金属》 CSCD 北大核心 2003年第8期21-23,共3页
本文研究了在聚乙二醇 -锌试剂 -硫酸铵体系中非有机溶剂萃取光度法测定Ga的条件 ,其原理是 :PH4.5~5 .5时三价镓在聚乙二醇 -锌试剂 -硫酸铵体系中生成了稳定的络合物 ,其最大吸收波长为 63 0nm ,RSD <3 .60 % ,回收率为 96.7%。... 本文研究了在聚乙二醇 -锌试剂 -硫酸铵体系中非有机溶剂萃取光度法测定Ga的条件 ,其原理是 :PH4.5~5 .5时三价镓在聚乙二醇 -锌试剂 -硫酸铵体系中生成了稳定的络合物 ,其最大吸收波长为 63 0nm ,RSD <3 .60 % ,回收率为 96.7%。由于采用聚乙二醇的水溶液取代传统方法中的苯 -乙酸乙酯作萃取剂 ,避免对人体的毒害性和对环境的污染。该方法具有准确、快速、操作简便。 展开更多
关键词 试剂 非有机试剂 萃取光度法
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Pilot study on combined process of catalytic ozonation and biological activated carbon for organic pollutants removal
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作者 韩帮军 马军 +3 位作者 关小红 韩宏大 何文杰 张涛 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2009年第6期837-842,共6页
A combined process of catalytic ozonation in the presence of a novel heterogeneous catalyst and biological activated carbon was investigated for the removal of priority control organic pollutants, the reduction of gen... A combined process of catalytic ozonation in the presence of a novel heterogeneous catalyst and biological activated carbon was investigated for the removal of priority control organic pollutants, the reduction of genotoxicity, and the improvement of biodegradable dissolved organic carbon (BDOC). Results confirm that the catalytic ozonation has higher effectiveness for the removal of refractory harmful organic pollutants, the reduction of genotoxicity and the increase of bio-degradability of organics than ozonation alone, which results in lower pollution load for subsequent biological activated carbon process, and then leads to less organic pollutants penetrating biological activated carbon. The novel catalytic ozonation with this combined process exhibits excellent performance to guarantee the safety of drinking water. 展开更多
关键词 heterogeneous catalytic ozonation environmental priority control pollutants biological activated
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