1)  Cr 6+
铬(Cr6+)
2)  wastewater with Cr6+
含铬(Cr6+)废水
3)  Chromium(Ⅵ)
1.
Simultaneous determination of chromium(Ⅵ) and manganese(Ⅶ) in steel by differential reaction rate kinetic spectrophotometry;
速差褪色动力学光度法同时测定钢中铬(Ⅵ)和锰(Ⅶ)
2.
Catalytic spectrophotometric determination of trace chromium(Ⅵ) based on the oxidation of hydrogen peroxide on ethyl violet;
过氧化氢氧化乙基紫催化光度法测定痕量铬(Ⅵ)
3.
Determination of Trace Chromium(Ⅵ) in High Purity Samarium Oxide by Extraction Spectrophotometry;
萃取光度法测定高纯氧化钐中的铬
4)  Cr(Ⅵ)
1.
Study on the Treatment of Wastewater Containing Cr(Ⅵ) with the Reductive Heavy Metal chelating Agent WY5;
新型还原性重金属捕集剂WY5的制备及其含铬废水处理效果
2.
DETERMINATION OF TRACE AMOUTS OF Cr(Ⅵ) BY ANTI CATALYTIC SPECTROPHOTOMETRY;
反催化分光光度法测定痕量铬(Ⅵ)的研究
3.
STUDIES OF MICROBIAL TREATMENT PROCESS FOR WASTEWATER WITH HIGH CONCENTRATION OF Cr(Ⅵ);
电镀超高浓度铬废水微生物治理工程的研究
5)  chromium(Ⅵ)
铬(Ⅵ)
1.
A novel catalytic procedure for the determination of chromium(Ⅵ) was proposed based on the oxidation of gallocyanine with hydrogen peroxide catalyzed by chromium(Ⅵ).
在六次甲基四铵-盐酸介质中, 痕量铬(Ⅵ)显著催化H2O2氧化‘花青褪色的指示反应, 催化反应的表观活化能为6。
2.
A catalytic spectrophotometric method for the simultaneous determination of trace vanadium(Ⅴ) and chromium(Ⅵ) is described.
基于硫酸介质中,柠檬酸作活化剂,钒(Ⅴ)、铬(Ⅵ)催化氨酸钾氧化鸡冠花红褪色的反应,建立了催化光度同时测定痕量钒(Ⅴ)、铬(Ⅵ)的新方法。
3.
A differential reaction rate kinetic spectrophotometric procedure has been proposed for the simultaneous determination of chromium(Ⅵ) and chromium(Ⅲ).
基于铬(Ⅵ)和铬(Ⅲ)与5′-硝基水杨基荧光酮、溴化十六烷基三甲铵的显色反应速度差异,在pH5。
6)  Cr(Ⅵ)
铬(Ⅵ)
1.
The influences of pH value and added salt of the system, as well as the active groups of the regenerable chitin on the adsorption of Cr(Ⅵ) by regenerable chitin have been investigated.
可再生甲壳素吸附铬(Ⅵ)的特性研究陈炳稔*汤又文李国明万春华(华南师范大学化学系广州510631)关键词可再生甲壳素,制备,铬(Ⅵ),吸附1997-08-19收稿,1997-12-23修回广东省科委及高教厅资助课题利用甲壳素作为铬(Ⅵ。
参考词条
补充资料:铬(Cr)
分子式:
分子量:
CAS号:

性质:周期系第Ⅵ族副族(铬族)元素。原子序数24。稳定同位素:50,52,53,54。原子量51.9961。钢灰色金属。有延展性。含氧、氢、碳和氮等杂质时则硬而脆。密度7.22。熔点1857℃。沸点2672℃。主要化合价+2、+3和+6。具有强耐腐蚀能力。在空气中,甚至在赤热状态下,氧化也很慢。不溶于水。溶于盐酸、硫酸和高氯酸,形成蓝色Cr2+离子,并释出氢气。在硫酸中加热时即溶解。与硝酸不起作用。溶于强碱溶液。主要用于制不锈钢(与铁和镍组成的合金)和其他在高温时具有强耐腐蚀的合金以及金属的镀铬和渗铬。在自然界中主要成铬铁矿而存在。可由氧化铬在电炉中用铝还原,或由铬铵矾溶液或含少许硫酸的铬酸溶液经电解而制得。

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