查询词典 dichromate

Citric acid can reduce the Cr(superscript 6+) in sodium dichromate into Cr(superscript 3+) and react with to yield citric acid chromium chelate at 75℃.

在75℃下用柠檬酸将重铬酸钠中的Cr(上标 6+)还原为Cr(上标 3+)，同时与Cr(上标 3+)发生螯合反应，生成柠檬酸铬螯合物。

Various chrome complex dyes(1:1 ratio) of mordant black 1,mordant black 7,mordant black 9 and mordant black 11 have been synthesized and sodium dichromate is been used as mordant agents instead of Cr3+ to oxidate dyes sufficiently.

还设计合成了媒介黑1、媒介黑7、媒介黑9和媒介黑11的高水溶性1∶1络合染料，重铬酸钠作为铬化试剂，染料得到了充分的氧化，无色配体多羟基羧基酸的引入使染料有很好的水溶性，该实验路线未见报道。

Based on laboratory research,the feasible analysis on process technology of producing sodium dichromate from used chromic residue phosphate produced by reused sodium hydroger sulfate in chromate producing system is made,together with its potential market analysis.

铬盐生产厂含铬硫酸氢钠返回系统中再利用所产生的废渣———磷酸铬渣，通过实验室研究，可生产重铬酸钠。

The study findings were announced at the National Institute of Enironmental Health Sciences after the NTP Board of Scientific Counselors Technical Reports Reiew Subcommittee completed its independent peer reiew of the sodium dichromate dihydrate research report.

在NTP科学顾问技术报告综述委员会完成其独立的同行审查的重铬酸钠研究报告后，这项研究结果在国家环境卫生科学研究所公布。

Adapting the combination of CMC, Na2SO3 and Na2SiO3 which were environment-friendly as the depressant of galena instead of toxic sodium dichromate.

依据矿石性质的特点，铜铅锌浮选采用铜铅混合浮选、然后再进行铜铅分离，铜铅浮选尾矿进行浮选锌矿物的原则工艺流程。

The anolyte used was sodium dichromate solution, and the anode used was a self-made combination electrode of titanium matrix with a multiple-unit metal oxides active coating.

本技术所用阳极液为重铬酸钠水溶液，阳极为自制钛基多元金属氧化物复合电极。

The active constituents on anodic surface are TiO_2, RuO_2 and IrO_2.Using Ti/IrO_2/TiO_2-RuO_2-IrO_2 as anode, stainless steel as cathode, Aciplex~-F4602 cation-exchange membrane (the electrosynthesis of sodium dichromate), and Nafion?

采用自制两室复极式离子膜电催化反应器、Ti／IrO_2／TiO_2-RuO_2-IrO_2阳极、不锈钢阴极，在极间距小于1mm、重铬酸钠电催化合成用Aciplex~？

The electrolyte buffer for the anion separation consisted of 40 mmol/L boric acid -1.8 mmol/L potassium dichromate -2 mmol/L sodium tetraborate (pH 8.6), and tetramethyl ammonium hydroxide was used as electro-osmotic flow modifier.

阴离子测定采用的缓冲体系为40mmol/L硼酸-1.8mmol/L重铬酸钾-2mmol/L硼酸钠(pH8.6)，氢氧化四甲铵为电渗流改性剂，5种阴离子在4.6min内达到基线分离，检出限为0.10~1.85mg/L。

Determination of purity of potassium dichromate by Coulometric Titrimetry

铬酸对铝的溶解度小，能保持原来被粘物的精度和表面光洁度，适用于尺寸容差小，表面光洁度高的零件。

To further explore tillage practices for improving soil structure, the effect of different tillage practices on the structure and organic carbon of tilth soils were investigated using routine method (Wet-sieving, Potassium dichromate volumetry and Core-cutting sampling).

为了寻求能够提高土壤结构稳定性的耕作模式，在陇中黄土高原半干旱区连续7年的定位试验研究基础上，采用常规分析方法(湿筛法、重铬酸钾容量法、环刀法)，研究了不同耕作方式对耕层土壤结构性能及有机碳含量的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。