1) chromium
[英]['krəʊmiəm] [美]['kromɪəm]
铬
1.
Matrix Modifiers Optimization for Determination of Chromium in Cosmetics by Graphite Furnace Atomic Absorption Spectrometry;
化妆品中铬的石墨炉原子吸收测定法中基体改进剂的优选
2.
Direct Determination of Trace Chromium in Biological Samples by Graphite Furnace Atomic Absorption Spectrometry with Slurry Introduction;
悬浮液进样-石墨炉原子吸收光谱法测定生物样品中微量铬
3.
Microwave Digestion Used in Soil Total Chromium Determination;
微波消解在土壤中总铬测定中的应用
2) Cr
铬
1.
Concentration of Chromium in Agricultural Soil and Crops and Their Healthy Risk;
湛江市农业土壤与作物铬含量及其健康风险
2.
Determination of Co,Cr,Fe,Mn,Mo,Ni,Ti in PTA by DUO-ICP-AES;
DUO-ICP-AES测定精对苯二甲酸中的钴、铬、铁、锰、钼、镍、钛
3.
Geogenic distribution and baseline concentrations of Cr in surficial soil of Guiyang, China;
贵阳表层土壤中铬的环境地球化学基线研究
3) chrome
[英][krəʊm] [美][krom]
铬
1.
Determination of chrome content in cashmere dyed with mordant black PV;
羊绒制品媒介黑PV染色后铬含量的测定
2.
Treatment of industrial wastewater containing chrome by techniques based on electrochemical principle;
基于电化学反应原理的含铬工业废水处理技术
3.
A study on determination of chrome in tannery waste leakage solution;
皮革废渣渗漏液中铬的测定
4) Chromium(Ⅵ)
铬
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
5) Cr(Ⅵ)
铬
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
6) Chromium(Ⅵ)
铬()
补充资料:铬
铬 chromium 一种化学元素。化学符号Cr,原子序数24,原子量51.9961,属周期系ⅥB族。1797年法国N.-L.沃克兰从西伯利亚红铅矿(即铬铅矿)中发现一种新元素,次年用碳还原法制得这种金属。因为铬能形成多种颜色的化合物,便用希腊文chromos(含义是颜色)命名为chromium。铬在地壳中的含量为1.0×10-2%。最重要的矿物为铬铁矿。 铬是钢灰色有光泽的金属,熔点1857℃,沸点2672℃,20℃时的密度,单晶为7.22克/厘米3,多晶为7.14克/厘米3。有延展性,但含氧、氢、碳和氮等杂质时变得硬而脆。铬的化学性质不活泼,常温下对氧和水汽都是稳定的,铬在高于600℃时开始和氧发生反应,但当表面生成氧化膜以后,反应便缓慢,当加热到1200℃时,氧化膜被破坏,反应重新变快。高温下,铬与氮、碳、硫发生反应。铬在常温下就能和氟作用。铬能溶于盐酸、硫酸和高氯酸,遇硝酸后钝化,不再与酸反应。铬能与镁、钛、钨、锆、钒、镍、钽、钇形成合金。铬及其合金具有强抗腐蚀能力。铬的氧化态为-1、-2、+1、+2、+3、+4、+5、+6。铬的氧化物有氧化亚铬(CrO)、三氧化二铬(Cr2O3)、三氧化铬(CrO3)。三氧化铬是红色针状晶体,高温下分解为三氧化二铬和氧气,是强氧化剂,酒精和它接触后能着火,在染料和皮革工业中有广泛的用途。铬酸盐的通式为MCrO4或MIICrO4(IM为一价金属,IIM为二价金属)。铬酸盐在酸性溶液中存在以下平衡: 说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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