fume hood

简明释义

通风柜

英英释义

例句

1.Always work with hazardous materials inside a fume hood.

在通风柜内始终处理危险材料。

2.If you smell any fumes, immediately step back from the fume hood.

如果闻到任何气味，请立即从通风柜后退。

3.The laboratory is equipped with several fume hoods for safe chemical handling.

实验室配备了几个通风柜以安全处理化学品。

4.Make sure the fume hood is functioning properly before starting your experiment.

在开始实验之前，请确保通风柜正常运作。

5.The fume hood helps to protect users from toxic vapors.

该通风柜有助于保护用户免受有毒蒸汽的影响。

作文

In modern laboratories, safety is a paramount concern. One of the most important pieces of equipment that ensures the safety of lab personnel is the fume hood. A fume hood is a ventilated enclosure that protects users from inhaling hazardous fumes, vapors, and dust. These hoods are designed to draw air away from the user and filter out harmful substances, providing a safe working environment for various chemical experiments.The operation of a fume hood is quite simple yet highly effective. When a laboratory technician works with volatile chemicals, the fume hood creates a barrier between the user and the potentially dangerous substances. The airflow within the fume hood is carefully controlled; as the technician performs their work, the air is drawn into the hood, preventing any harmful vapors from escaping into the laboratory.There are several types of fume hoods, including ducted and ductless models. Ducted fume hoods are connected to a building's ventilation system, which expels the contaminated air outside. This type is particularly effective for dealing with highly toxic substances. On the other hand, ductless fume hoods use filters to clean the air before recirculating it back into the laboratory. While they are easier to install and do not require extensive ductwork, they may not be suitable for all applications due to their limited capacity to handle certain types of chemicals.The importance of using a fume hood cannot be overstated. Many chemicals used in laboratories can pose serious health risks, including respiratory problems, skin irritation, and even long-term health effects like cancer. By utilizing a fume hood, lab workers significantly reduce their exposure to these hazards. It is crucial for all personnel to be trained on the proper use of fume hoods to maximize their effectiveness.In addition to personal safety, fume hoods also play a vital role in maintaining the integrity of experimental results. Many chemical reactions can produce byproducts that, if inhaled or exposed to the technician, could interfere with the experiment. By working within a fume hood, scientists can ensure that their results are not compromised by external factors.Despite their importance, there are some common misconceptions about fume hoods. Some individuals believe that simply being near a fume hood provides sufficient protection, but this is not the case. Users must always work inside the fume hood and keep the sash at the recommended height to ensure optimal airflow. Additionally, it is essential to keep the workspace within the fume hood organized and free of clutter to allow for proper airflow and avoid accidents.In conclusion, the fume hood is an indispensable tool in any laboratory setting. It serves as a critical barrier against hazardous chemicals, ensuring the safety of lab personnel and the accuracy of experimental results. Understanding how to properly utilize a fume hood is essential for anyone working in a laboratory environment, and adherence to safety protocols can prevent accidents and health issues. As science continues to advance, the role of fume hoods will remain vital in protecting those who contribute to scientific discovery.

在现代实验室中，安全是最重要的考虑因素之一。确保实验室人员安全的最重要设备之一就是通风柜。通风柜是一种通风的封闭装置，可以保护用户免受有害烟雾、蒸汽和灰尘的吸入。这些柜子旨在将空气从用户身上抽走，并过滤掉有害物质，为各种化学实验提供安全的工作环境。通风柜的操作相当简单，但效果显著。当实验室技术人员处理挥发性化学品时，通风柜在用户与潜在危险物质之间创建了一个屏障。通风柜内的气流受到精确控制；当技术人员进行工作时，空气被吸入柜内，防止任何有害蒸汽逸散到实验室中。通风柜有几种类型，包括排气型和无排气型。排气型通风柜连接到建筑物的通风系统，将污染的空气排放到外部。这种类型特别适合处理高度毒性的物质。另一方面，无排气型通风柜使用过滤器在将空气重新循环回实验室之前清洁空气。虽然它们更易于安装且不需要复杂的管道，但由于其处理某些类型化学品的能力有限，可能并不适合所有应用。使用通风柜的重要性不言而喻。实验室中使用的许多化学品可能对健康构成严重风险，包括呼吸问题、皮肤刺激，甚至长期健康影响如癌症。通过使用通风柜，实验室工作人员显著减少了对这些危害的暴露。所有人员都必须接受关于如何正确使用通风柜的培训，以最大限度地提高其有效性。除了个人安全，通风柜在保持实验结果的完整性方面也发挥着重要作用。许多化学反应可能会产生副产品，如果被技术人员吸入或接触，可能会干扰实验。通过在通风柜内工作，科学家可以确保他们的结果不受外部因素的影响。尽管通风柜的重要性不容忽视，但仍然存在一些常见的误解。有些人认为仅仅靠近通风柜就能提供足够的保护，但事实并非如此。用户必须始终在通风柜内工作，并保持窗框在推荐高度，以确保最佳气流。此外，保持通风柜内的工作空间整洁和无杂物对于允许正确的气流和避免事故至关重要。总之，通风柜是任何实验室环境中不可或缺的工具。它作为有害化学品的关键屏障，确保实验室人员的安全和实验结果的准确性。了解如何正确使用通风柜对于任何在实验室工作的人来说都是必不可少的，遵循安全协议可以防止事故和健康问题。随着科学的不断进步，通风柜的角色将在保护为科学发现做出贡献的人们方面继续发挥重要作用。