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- The adsorption effect of lead ions on chitosan was investigated. 对壳聚糖对Pb2＋吸附作用进行了探讨。
- The cross-linkage of Lead ions by bridging diphosphonate ligands resulted in a< 200> organic-inorganic hybrid layer. 化合物中;铅通过桥连二膦酸配体形成一个有机无机杂化层;层与层之间通过范德华力相连形成超分子结构。
- After dissolving ore samples of zinc and lead, the lead ions were precipitated.The zinc ions were titrated by EDTA.The lead precipitation was then dissolved. 利用铅锌矿中铅生成复盐沉淀,用EDTA标准溶液滴定锌,然后溶解复盐沉淀,加入过量EDTA标准溶液,用硝酸铅标准溶液反滴定。
- For lead ion,the order of maximum uptake capacity was: 0.6SCA8>0.1SCA8>0.6SCA5 >0.1SCA5 >0.6SCA2>SOP>0.1SCA2>0.1CA>AOP>0.6CA>OP. 对于铅离子的吸附;有以下的顺序:0.;6SCA8 >0
- We comparatively investigated the removal of lead ion and cadmium ion in aqueous solution by natural phosphorite and its modified product. 采用天然磷矿石及其改性产品对水溶液中铅离子和镉离子的去除进行了对比研究。
- The sorts of adsorbents for lead ion, their adsorption principle and performance were summarized, with comparison of the properties and performance. 总结了铅离子吸附剂的种类、吸附原理及吸附性能,列举了各类吸附剂的特点,并比较了它们的吸附性能。
- The formation of the complex between lead ion and immobilized xylenol orange caused a large reflected light intensity change, and lead ion in the solution can be determinated. 铅离子与固定在阴离子交换树脂上的二甲酚橙的络合反应,使试剂相光反射强度发生了很大的变化,从而使溶液中的铅离子得以测定。
- It was found that lead ion can decrease the activation energy E a of black patina formation from about 34?kJ/mol to about 21?kJ/mol, and accelerates the rate of black patina. 采用试片的表面明度差来表征黑变的程度,考察了铅和光照对其黑变速率的影响。
- The increase of adsorption temperature was also found to enhance the removal for adsorbing chromium ion and lead ion, whereas it had no effect for adsorbing copper ion and cadmium ion. 吸附铬离子和铅离子时，吸附温度上升会提升吸附效能，但在吸附铜离子和镉离子的情况下，则完全没有效应。
- Keywords dithizone;spectrophotometry;lead ion; 双硫腙;分光光度法;铅离子;
- The horse forged ahead the lead in the homestretch. 那匹马在最后阶段突然加速跑到前面。
- Shirley will try out for the lead in the play. 雪莉将参加该剧主角的选拔演出。
- Keywords meerschaum;lead ions;removing lead ions from waste water; 海泡石;铅离子;废水除铅;
- Excessive patriotism can lead to xenophobia. 爱国主义过了头即可导致仇视一切外国人。
- Keywords chelatometric titration;wastewater;lead ions; 络合滴定;废水;铅离子;
- Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
- Graphite is used in making lead pencils. 石墨常被用来做成铅笔。
- Lead will fuse at quite a low temperature. 铅会在相当低的温度下熔化。
- The team recovered its lead in the second half. 该队在下半场重新领先。
- No road of flowers lead to glory. 没有一条通往光荣的道路是铺满鲜花的。
