dichromate

简明释义

英[daɪˈkrəʊmeɪt]美[daɪˈkroʊˌmeɪt]

n. [无化] 重铬酸盐

英英释义

单词用法

同义词

反义词

例句

1.The results were in good agreement with those from the conventional COD methods, i. e . , permanganate and dichromate ones.

将该方法用于实际水样的检测，测定结果与COD标准分析法有较好的一致性。

2.The effects of potassium dichromate concentration, sulfuric acid concentration, etching temperature and etching time on the bulk etching rate of PP nuclear track membrane were discussed.

建立了基体蚀刻速率与重铬酸钾浓度、硫酸浓度、蚀刻温度的数学关联式；

3.The method shows the advantages of simple operation, less pollution, high analytical speed, better accuracy and precision over the traditional potassium dichromate oxidation method.

与重铬酸钾氧化法的结果相比，微波消化法具有操作简单、污染小、快速准确的优点。

4.It is found that the G value slightly depends on the initial concentration of dichromate ions.

对影响剂量测量的几个因素进行了研究，发现重铬酸根离子初始浓度对G值有一定的影响；

5.I let the silver nitrate react with pieces of brain hardened in potassium dichromate.

我让已被重铬酸钾硬化的一些脑组织细胞与硝酸银反应。

6.Either the amount of reduced chromium or the amount of unreacted dichromate can be measured.

还原生成的三价铬的量或未反应的重铬酸钾的量能被测出。

7.Effect of magnetic field and dichromate on anodic polarization behavior of iron in sulfuric acid.

重铬酸根与磁场对铁在硫酸溶液中阳极极化行为的影响。

8.In view of the detrimental effect of mercury and chromium in determination of iron by means of dichromate titration, a new method was proposed containing no mercury and chromium.

针对重铬酸钾法测定铁含量中汞和铬的有害影响，介绍了一种无汞无铬测定法。

9.Fuse potassium dichromate (19) in a porcelain crucible.

在瓷坩埚中熔化重铬酸钾(19)。

10.The bright orange color of dichromate makes it easily identifiable in solutions.

由于其鲜艳的橙色，二铬酸盐在溶液中很容易被识别。

11.The laboratory used dichromate to test the oxidation properties of various compounds.

实验室使用二铬酸盐来测试各种化合物的氧化特性。

12.The chemical reaction involved dichromate as a key oxidizing agent.

该化学反应涉及二铬酸盐作为关键的氧化剂。

13.Safety precautions must be taken when handling dichromate due to its toxicity.

处理二铬酸盐时必须采取安全预防措施，因为它是有毒的。

14.In photography, dichromate solutions are often employed for developing prints.

在摄影中，通常使用二铬酸盐溶液来冲洗照片。

作文

The term dichromate refers to a chemical compound containing two chromium atoms in its structure, typically found in the form of a salt. These compounds are characterized by their distinctive orange-yellow color, which is due to the presence of the chromate ion. In various chemical reactions and industrial applications, dichromate plays a crucial role. For instance, it is commonly used in the manufacturing of pigments, as well as in leather tanning processes. The most well-known dichromate compound is potassium dichromate, which has the formula K2Cr2O7. This compound is often utilized in laboratories for its strong oxidizing properties.In addition to its practical applications, dichromate also poses significant environmental and health risks. Due to its toxicity, exposure to dichromate can lead to serious health issues, including respiratory problems and skin irritation. Therefore, it is essential to handle these compounds with care and follow safety regulations when working with them in laboratory settings or industrial environments.Moreover, the use of dichromate has been scrutinized in recent years due to its potential carcinogenic effects. This has prompted many industries to seek alternative substances that are less harmful to human health and the environment. As a result, research is ongoing to develop safer and more sustainable alternatives to dichromate in various applications.In the field of chemistry education, understanding the properties and reactions of dichromate is vital for students. It serves as an excellent example of redox reactions, where dichromate ions can act as powerful oxidizers. When reduced, dichromate can convert into chromium(III) ions, which are much less toxic. This transformation is often demonstrated in laboratory experiments, allowing students to visualize the changes and deepen their comprehension of oxidation-reduction processes.In conclusion, while dichromate is a valuable compound in various industrial and educational contexts, it is crucial to recognize its potential hazards. Responsible usage and ongoing research into safer alternatives will help mitigate the risks associated with dichromate and contribute to a healthier environment. As we continue to explore the complexities of chemistry, the study of compounds like dichromate remains essential for both scientific advancement and public safety.

术语dichromate指的是一种含有两个铬原子的化合物，通常以盐的形式存在。这些化合物的特点是其独特的橙黄色，这是由于铬酸根离子的存在。在各种化学反应和工业应用中，dichromate发挥着至关重要的作用。例如，它通常用于制造颜料以及皮革鞣制过程。最著名的dichromate化合物是重铬酸钾，其化学式为K2Cr2O7。该化合物常用于实验室，因其强氧化性而受到青睐。除了实际应用外，dichromate还对环境和健康构成重大风险。由于其毒性，暴露于dichromate中可能导致严重的健康问题，包括呼吸系统问题和皮肤刺激。因此，在实验室或工业环境中处理这些化合物时，必须小心并遵循安全规定。此外，近年来由于潜在的致癌效应，dichromate的使用受到了审查。这促使许多行业寻求对人类健康和环境危害较小的替代物。因此，研究正在进行中，以开发更安全、更可持续的替代品，以取代在各种应用中的dichromate。在化学教育领域，理解dichromate的性质和反应对于学生来说至关重要。它是氧化还原反应的一个极好例子，其中dichromate离子可以作为强氧化剂。当被还原时，dichromate可以转化为铬(III)离子，这种离子毒性要小得多。这一转变通常在实验室实验中演示，允许学生直观地观察变化，加深他们对氧化还原过程的理解。总之，虽然dichromate在各种工业和教育背景中是一种有价值的化合物，但认识到其潜在危害至关重要。负责任的使用和对更安全替代品的持续研究将有助于减轻与dichromate相关的风险，并促进一个更健康的环境。随着我们继续探索化学的复杂性，像dichromate这样的化合物的研究仍然是科学进步和公共安全的重要组成部分。