chromate

简明释义

英[ˈkrəʊmɪt]美[ˈkroʊˌmeɪt]

n. 铬酸盐

vt. 用铬酸盐处理

复 数 c h r o m a t e s

英英释义

单词用法

同义词

反义词

例句

1.Chromate conversion coatings on zinc or cadmium electrodeposits.

锌和镉电解沉积物的铬酸盐处理。

2.The adsorption of chromate on zeolite modified by cation surfactant CTAB and its mechanism were investigated.

研究了由十六烷基三甲基溴化铵（CTAB）改性制成的有机沸石对水体中铬酸根的吸附性能及吸附机制。

3.Passivation technology on electrodeposited zinc in titanium solution was provided as an alternative treatment to chromate blue passivation.

探讨了镀锌层钛盐溶液钝化替代传统的铬酸盐镀锌层蓝色钝化的工艺和形成蓝色钝化膜的机理。

4.It is shown that a chromate conversion coating needs to be used together with the non -chromate primer to meet the corrosion protective requirements.

试验结果表明：非铬涂层需配以含铬的转化涂层才能够满足防腐性能的要求。

5.With chromate treated die cast treatment.

与铬酸盐对待了模子塑像治疗。

6.The country is rich in minerals such as bauxite, iron ore, lead, gold, precious stones, tin, chromate, anthracite, granite, marble, clay, white sand and graphite.

这个国家拥有丰富的矿产，如铝土矿、铁矿石、铅、黄金、宝石、锡、铬酸盐、无烟煤、花岗岩、大理石、粘土、白砂和石墨。

7.Methods Clinical analysis of 12 patients (20 eyes) of ocular bum by chromate salt from the year 2003 to 2004.

方法回顾性分析了2003 ~ 2004年间收治的12例(20眼)红矾烧伤的临床资料。

8.The corrosion resistance of micro arc oxidation ceramic coating is better than the corrosion resistance of chromate and anode coating.

微弧氧化陶瓷层的耐蚀性优于阳极氧化和铬化处理膜层的耐蚀性。

9.At present, the hurtless treatment for chrome slag is undergoing in many chromate plants in China.

目前，许多铬盐厂正在进行铬渣无害化处理，速度快的已基本完成。

10.The paint contains chromate as a pigment for its vibrant color.

这款油漆含有铬酸盐作为其鲜艳颜色的颜料。

11.Environmental regulations limit the discharge of chromate into waterways.

环境法规限制将铬酸盐排放到水道中。

12.The laboratory used a solution of chromate to test for the presence of certain metals.

实验室使用了一种铬酸盐溶液来检测某些金属的存在。

13.In some industrial processes, chromate is added to enhance corrosion resistance.

在某些工业过程中，添加铬酸盐以增强抗腐蚀性。

14.Workers must wear protective gear when handling chromate due to its toxicity.

由于铬酸盐的毒性，工人在处理时必须穿戴防护装备。

作文

Chromate compounds are widely used in various industrial applications, but they also pose significant environmental and health risks. The term ‘chromate’ refers to a chemical compound containing the chromate ion, CrO4^2-. This ion is derived from chromium, which is a transition metal found in the earth's crust. In its trivalent form, chromium is relatively stable and less harmful, but when oxidized to its hexavalent state, it becomes highly toxic. The widespread use of chromate in industries such as metallurgy, wood preservation, and pigment manufacturing has raised concerns about its impact on human health and the environment.One of the most common applications of chromate is in the production of pigments for paints and coatings. Chromate pigments provide vibrant colors and excellent durability, making them popular choices for a variety of products. However, the toxicity of hexavalent chromium has led to stricter regulations regarding its use. Many countries have implemented guidelines to limit exposure to chromate, particularly in occupational settings where workers may be at risk of inhaling or coming into contact with these hazardous materials.In addition to its use in pigments, chromate is also employed in the metal finishing industry. It is commonly used in processes such as electroplating and anodizing to enhance corrosion resistance and improve the appearance of metal surfaces. While these applications are beneficial for extending the lifespan of metal products, they also result in the release of chromate into the environment. Improper disposal and leaks from manufacturing facilities can lead to soil and water contamination, posing risks to ecosystems and human health.The health effects of exposure to chromate are well-documented. Inhalation of chromate dust can cause respiratory issues, including asthma and lung cancer. Skin contact can lead to dermatitis, while ingestion of chromate-contaminated water can result in serious gastrointestinal problems. Given these risks, it is crucial for industries that utilize chromate to implement strict safety measures and waste management practices.Efforts to reduce the environmental impact of chromate include the development of alternative materials and methods. Researchers are exploring safer substitutes for chromate in various applications, such as non-toxic pigments and environmentally friendly metal finishing techniques. These innovations aim to minimize the reliance on hazardous substances while still providing the desired performance characteristics.In conclusion, while chromate compounds play an important role in many industrial processes, their potential health and environmental hazards cannot be ignored. As awareness of these risks grows, it is essential for industries to adopt safer practices and seek alternatives to chromate. By doing so, we can protect both human health and the environment from the dangers associated with this toxic compound. Understanding the implications of chromate usage is vital for promoting a safer and more sustainable future.

铬酸盐化合物在各种工业应用中被广泛使用，但它们也带来了显著的环境和健康风险。‘铬酸盐’这个术语指的是含有铬酸根离子CrO4^2-的化合物。该离子源自铬，铬是一种存在于地壳中的过渡金属。在其三价状态下，铬相对稳定且危害较小，但当氧化为六价状态时，它变得高度有毒。铬酸盐在冶金、木材防腐和颜料制造等行业的广泛使用引发了人们对其对人类健康和环境影响的担忧。铬酸盐最常见的应用之一是生产涂料和涂层的颜料。铬酸盐颜料提供鲜艳的颜色和优异的耐久性，使其成为各种产品的热门选择。然而，六价铬的毒性导致对其使用的监管日益严格。许多国家已实施限制接触铬酸盐的指导方针，特别是在工人可能吸入或接触这些危险材料的职业环境中。除了用于颜料，铬酸盐还用于金属表面处理行业。它通常用于电镀和阳极氧化等工艺，以增强耐腐蚀性并改善金属表面的外观。虽然这些应用对于延长金属产品的使用寿命是有益的，但它们也导致铬酸盐释放到环境中。制造设施的不当处置和泄漏可能导致土壤和水源污染，对生态系统和人类健康构成风险。接触铬酸盐的健康影响已有充分的文献记载。吸入铬酸盐粉尘会导致呼吸问题，包括哮喘和肺癌。皮肤接触可能导致皮炎，而摄入受铬酸盐污染的水则可能导致严重的胃肠道问题。鉴于这些风险，利用铬酸盐的行业必须实施严格的安全措施和废物管理实践。减少铬酸盐对环境影响的努力包括开发替代材料和方法。研究人员正在探索铬酸盐在各种应用中的更安全替代品，如无毒颜料和环保金属表面处理技术。这些创新旨在尽量减少对危险物质的依赖，同时仍提供所需的性能特征。总之，虽然铬酸盐化合物在许多工业过程中发挥着重要作用，但其潜在的健康和环境危害不可忽视。随着对这些风险的认识不断提高，行业必须采取更安全的做法，并寻求铬酸盐的替代品。通过这样做，我们可以保护人类健康和环境，免受与这种有毒化合物相关的危险。了解铬酸盐使用的影响对于促进一个更安全和可持续的未来至关重要。