tetraethyl lead

简明释义

四乙铅

英英释义

例句

1.The use of tetraethyl lead in gasoline has been banned in many countries due to its toxicity.

由于其毒性，四乙基铅在许多国家的汽油中已被禁止使用。

2.Mechanics often find residues of tetraethyl lead in older engines that used leaded fuel.

机械师常常在使用含铅燃料的旧发动机中发现四乙基铅的残留物。

3.Health risks associated with tetraethyl lead exposure include neurological damage.

与接触四乙基铅相关的健康风险包括神经损伤。

4.The chemical structure of tetraethyl lead consists of a lead atom bonded to four ethyl groups.

四乙基铅的化学结构由一个铅原子与四个乙基基团结合而成。

5.Environmental studies have shown high levels of tetraethyl lead in urban areas due to historical fuel use.

环境研究显示，由于历史燃料使用，城市地区的四乙基铅水平很高。

作文

Tetraethyl lead, or 四乙基铅, was once a widely used additive in gasoline to improve engine performance and reduce knocking. Introduced in the 1920s, it quickly became popular among automobile manufacturers and drivers alike. The compound is an organolead compound that consists of four ethyl groups attached to a lead atom. This unique structure allowed it to enhance the octane rating of fuels, which is crucial for preventing engine knocking—a problem that can severely damage engines over time. However, the use of 四乙基铅 came with significant health and environmental concerns. Lead is a toxic metal, and its combustion products contribute to air pollution and pose serious health risks to humans and wildlife.As the negative effects of 四乙基铅 became more apparent, many countries began to phase out its use in the late 20th century. The United States Environmental Protection Agency (EPA) took significant steps to ban leaded gasoline in the 1970s, leading to a dramatic decrease in lead levels in the environment. This transition had positive implications for public health, as exposure to lead can result in neurological damage, especially in children. The decline of 四乙基铅 usage marked a pivotal moment in automotive history, pushing manufacturers to seek alternative methods to enhance fuel quality without compromising safety.In response to the ban on 四乙基铅, researchers developed various additives, such as MTBE (methyl tert-butyl ether) and ethanol, which serve similar purposes without the toxic consequences associated with lead. These alternatives have contributed to cleaner emissions and improved air quality in urban areas. Additionally, advancements in engine design and fuel technology have further reduced the need for any harmful additives, showcasing how innovation can address environmental challenges.Despite its historical significance, the legacy of 四乙基铅 serves as a cautionary tale about the consequences of using hazardous substances in consumer products. It highlights the importance of regulatory oversight and the need for ongoing research into the safety of chemicals in our environment. As we move towards a more sustainable future, it is essential to learn from past mistakes and prioritize health and safety over short-term gains.In conclusion, while 四乙基铅 played a vital role in the development of the automotive industry, its adverse effects on health and the environment cannot be overlooked. The transition away from leaded gasoline represents a significant achievement in public health and environmental protection. As we continue to innovate and improve fuel technologies, it is crucial to ensure that new solutions do not repeat the mistakes of the past. By understanding the implications of 四乙基铅 and other hazardous substances, we can make informed decisions that contribute to a healthier planet for future generations.

四乙基铅曾是汽油中广泛使用的添加剂，旨在改善发动机性能并减少敲击声。它在20世纪20年代被引入，并迅速在汽车制造商和司机中间流行开来。这种化合物是一种有机铅化合物，由四个乙基基团与一个铅原子相连。这种独特的结构使其能够提高燃料的辛烷值，这对于防止发动机敲击至关重要——这一问题可能会严重损害发动机。然而，使用四乙基铅带来了显著的健康和环境问题。铅是一种有毒金属，其燃烧产物会导致空气污染，并对人类和野生动物构成严重健康风险。随着四乙基铅的负面影响变得越来越明显，许多国家在20世纪末开始逐步淘汰其使用。美国环境保护局（EPA）在1970年代采取了重要措施，禁止含铅汽油的使用，导致环境中铅水平显著下降。这一转变对公共健康产生了积极影响，因为接触铅可能导致神经损伤，尤其是在儿童中。四乙基铅使用的减少标志着汽车历史上的一个关键时刻，推动制造商寻求替代方法，以提高燃料质量而不妨碍安全。为了应对对四乙基铅的禁令，研究人员开发了多种添加剂，如MTBE（甲基叔丁基醚）和乙醇，它们可以在没有铅的有毒后果的情况下发挥类似的作用。这些替代品有助于减少排放并改善城市地区的空气质量。此外，发动机设计和燃料技术的进步进一步减少了对任何有害添加剂的需求，展示了创新如何应对环境挑战。尽管四乙基铅在汽车工业的发展中具有历史意义，但其对健康和环境的负面影响不能被忽视。从四乙基铅的遗产中，我们可以得到警示，提醒我们在消费产品中使用危险物质的后果。这突显了监管监督的重要性，以及对我们环境中化学品安全性的持续研究的必要性。随着我们朝着更可持续的未来迈进，学习过去的错误并优先考虑健康和安全而非短期利益至关重要。总之，虽然四乙基铅在汽车工业的发展中发挥了重要作用，但其对健康和环境的不利影响不容忽视。从含铅汽油的转变代表了公共健康和环境保护的重要成就。随着我们继续创新和改善燃料技术，确保新解决方案不会重蹈覆辙至关重要。通过理解四乙基铅和其他有害物质的影响，我们可以做出明智的决策，为未来几代人创造一个更健康的星球。