重铬酸钾法

重铬酸钾法测定水中COD问题的探讨

Some Problems in Determining COD in Water with Potassium Dichromate Method

重铬酸钾法快速检测COD

Quick Determination of COD by Potassium Dichromate Method

重铬酸钾法测定废水COD条件改进的研究

Study on Improvement of Determination of COD in Wastewater

重铬酸钾法测定水中COD的不确定度分析

The Uncertainty Analyze of Determination of the Chemical Oxygen Demand in Water by Potassium Dichromate Method

分段重铬酸钾法测定高氯离子废水COD方法研究

The Study on Measuring COD of Wastewater with High Content of Chlorine by the Means of Potassium Dichromate of Different Concentration

本文回顾了化学需氧量分析方法的发展过程，详述了重铬酸钾法在测定废水中COD方面取得的进展。

Methods use in the determination of COD in wastewater is reviewed , practical consideration of the dichromate method are discussed in detail .

采用重铬酸钾法对Cu-Zn-Al形状记忆合金进行钝化。

The Cu-Zn-Al shape memory alloy was passivated by a potassium dichromate method .

Tyrode's人工体液中重铬酸钾法钝化Cu-Zn-Al形状记忆合金的耐蚀性研究

Study on Corrosion Resistance of Potassium Dichromate Method Passivated Cu-Zn-Al Shape Memory Alloy in Artificial Tyrode 's Solution

重铬酸钾法测定COD时，一般存在着该法对苯及其芳烃类的有机物氧化率偏低的问题。

There exists a problem of lower percentage of oxidization to the organic matters of benzene and aromatic hydrocarbons when we determine the COD by the method of potassium dichromate titration .

采用重铬酸钾法与高锰酸盐指数碱性法对水中化学需氧量（COD）进行了对比测定研究，考察了氯离子浓度对化学需氧量测定结果的影响。

The effects of ClO ~ - _4 on measurement of chemical oxygen demand ( COD ) of water were studied by comparison of potassium dichromate method and potassium permanganate method .

结果表明，经硬脂酸封孔后的铝阳极氧化膜表面平整无缺陷，膜的耐蚀性显著提高，在中性NaCl溶液中耐蚀性优于经沸水法和重铬酸钾法封闭的氧化膜。

Results showed that the film was flat and no defect via stearic acid sealing , corrosion resistance of anodizing film was increased evidently in NaCl solution and better than that sealed by boiling water or potassium dichromate .

以新疆某化肥有限公司污水COD在线监测仪为例，用在线监测数据与实验室重铬酸钾法测定数据进行比对分析，对污染源在线监测的比对分析方法进行探讨。

Sewage COD on-line monitoring instrument of so-and-so chemical fertilizer limited company in Xinjiang by way of illustration , this paper compared on-line monitoring datum with laboratory potassium dichromate determined datum , discusses comparison and analyses method of pollutant on-line monitoring .

采用硝酸银和硝酸铋联合掩蔽剂可以取代标准重铬酸钾法测定（COD）中使用的硫酸汞，从而避免汞对环境的污染，并使用这种新方法测定了多种类型的水样。

The united inhibitory method using silver nitrate and bismuth nitrate may replace the mercuric sulfate in standard potassium dichromate method for the determination of chemical oxygen demand avoid mercuric pollution to environment , Using the new method , We determined various water samples .

将电生的三价钴作为氧化剂，对于适量的葡萄糖和邻苯二甲酸氢钾进行氧化，以重铬酸钾法测定的COD值作为对照标准，其氧化率分别可达99.8%和71.2%。

When trivalent cobalt ion was used to oxidize the appropriate amounts of glucose and potassium acid phthalate , the oxidative efficiencies of the organic species that were oxidized were 99.8 % and 71.2 % respectively , compared with the measure values of chemical oxygen demand obtained with dichromate method .

重铬酸钾法测定防锈颜料亚磷酸锌中的亚磷酸根

Determination of Phosphite Content in Zinc Phosphite by Potassium Bichromate Method

重铬酸钾法与快速测定法测定化学需氧量的比较

Compare of Potassium Dichromate Method and Rapid Determination Method in COD Determining

复方乳酸钠注射液的重铬酸钾法测定

Determination of compound sodium lactate injection by potassium dichromate method

用重铬酸钾法测定复方乳酸钠注射液中的乳酸钠，方法简便、速，准确。

Potassium dichromate titration method was used for determining sodium lactate in compound sodium lactate injection .

沸水浴重铬酸钾法测定有机无机肥料中有机碳

Determination of organic carbon in organic inorganic fertilizer by the method of K_2Cr _2O_7 in boiling bath

本文对重铬酸钾法与快速测定法测定化学需氧量进行比较，结果表明快速测定法准确度和精密度均较为理想。

We compared Potassium dichromate method with rapid determination method and found that rapid determination method had better accuracy and precision .

方法：以中国药典（1995版）离子交换法做对照，用改进重铬酸钾法测定复方乳酸钠注射液中乳酸钠含量。结果：改进方法与药典法平行测定样品含量，二者显示无显著性差异。

METHODS : Modified of determined results of the modified potassium bichromate method with that of the ion-exchange resins method ( ch. P. Ed. 95 ), results show no different ( P > 0.05 ) .

该法用于河水、池塘水和轻度污染工业废水分析，获得了与经典重铬酸钾法基本一致的测定结果。

The method has been applied to the on-line determination of COD in river water , pool water , slight contaminative industrial water and the results are in agreement with traditional method using potassium dichromate .

通过丁酮氧化率、氯离子干扰、混配水样和实际水样的测定，对密封消解法和重铬酸钾法进行了验证。

It is better than the national standard method based on the comparison between the two methods in terms of oxidation rate of butanone , interference of chlorine ion , analysis of synthetic water sample and actual water sample .

提出了硝酸分解重铬酸钾法联产铬酸酐与硝酸钾的清洁工艺，并优选出过程中主要环节的合理操作条件。

A new cleaner technology for making chromium trioxide and potassium nitrate simultaneously by using nitric acid to decompose potassium dichromate has been brought forward . Also , the reasonable technological conditions of some important operation units in the procedure are selected .

目前测量水质COD的主要方法是化学法。化学法主要是重铬酸钾氧化法，它测量准确，但所需时间长，操作复杂，容易产生二次污染。

Currently , the main method to test the COD is potassium dichromate oxidation , a chemistry method , which is exact but time consuming and operation complicated . And this method may lead to secondary pollution easily .

用重铬酸钾滴定法测定铁的结果表明，在摇床转速为160r/min的条件下，pH值1.7，温度30℃时T。

30 ℃ with the initial pH 2.0.The determination of Fe by the potassium dichromate titration method indicated that at the shaking bath speed of 160 r / min , and pH 1.7 and temperature of 30 ℃ the rate of ferrous iron oxidation by T.

金属铜还原-重铬酸钾滴定法测定总铁的研究

Study of copper reduction & potassium dichromate titration measuring total iron

硫酸亚铁-重铬酸钾滴定法测定氯金酸中的金

Determination of gold in chloroauric acid by titration analysis with ferrous sulphate-potassium bichromate

重铬酸钾氧化法合成2-吡啶甲酸的研究

Synthesis of 2-pyridinecarboxylic acid by oxidation of potassium dichromate

碳纳米管的提纯&重铬酸钾氧化法

Oxidation Method of Purifying Carbon Nanotubes with K_2Cr_2O_7