concentration limit

简明释义

极限浓度

英英释义

例句

1.Before releasing waste into the river, the factory tested the concentration limit of harmful substances.

在将废物排入河流之前，工厂测试了有害物质的浓度限制。

2.The environmental agency set a concentration limit for pollutants in the air.

环境机构为空气中的污染物设定了浓度限制。

3.The laboratory must ensure that the chemical does not exceed the concentration limit.

实验室必须确保化学物质不超过浓度限制。

4.In drinking water regulations, there is a strict concentration limit for contaminants.

在饮用水法规中，污染物有严格的浓度限制。

5.Manufacturers must comply with the concentration limit when producing food additives.

制造商在生产食品添加剂时必须遵守浓度限制。

作文

In the realm of science and environmental studies, the term concentration limit refers to the maximum allowable concentration of a substance in a given environment. This concept is crucial for maintaining ecological balance and ensuring public health. For instance, when discussing pollutants in water bodies, the concentration limit helps determine safe levels for aquatic life and human consumption. Exceeding these limits can lead to detrimental effects on ecosystems, such as fish kills and the degradation of water quality.Moreover, the concentration limit is not only applicable to water but also to air quality and soil contamination. Regulatory agencies set these limits based on extensive research and risk assessments. For example, the Environmental Protection Agency (EPA) in the United States establishes concentration limits for various hazardous substances to protect both the environment and public health. These regulations are essential for controlling emissions from industrial processes and preventing harmful exposure to toxic chemicals.The significance of adhering to concentration limits can be illustrated through the case of lead in drinking water. Lead is a highly toxic metal that can cause severe health issues, particularly in children. The concentration limit for lead in drinking water is set at 15 parts per billion (ppb) by the EPA. When levels exceed this threshold, it triggers mandatory actions to reduce lead concentrations and safeguard public health.In addition to environmental health, the concept of concentration limit is also vital in the field of chemistry, particularly in laboratory settings. Chemists often work with various reagents and solvents, and understanding the concentration limit of these substances is essential for safe experimentation. Exceeding the concentration limit of a particular chemical can result in hazardous reactions, leading to accidents or harmful exposures. Therefore, lab protocols often include strict guidelines regarding the permissible concentrations of chemicals used in experiments.Furthermore, industries must also consider concentration limits when developing products. For example, cosmetics and personal care products are subject to regulations that dictate the maximum allowable concentrations of certain ingredients. This ensures that products are safe for consumer use and do not pose health risks. Companies must conduct thorough testing to ensure their products comply with these concentration limits, as failure to do so can result in legal ramifications and harm to their reputation.In conclusion, the concept of concentration limit is integral to various fields, including environmental science, chemistry, and product safety. Understanding and adhering to these limits is essential for protecting public health, preserving ecosystems, and ensuring safe practices in laboratories and industries. As we continue to face environmental challenges and health concerns, the importance of concentration limits will only grow, underscoring the need for ongoing research and regulatory vigilance to maintain safe concentrations of harmful substances in our environment.

在科学和环境研究领域，短语浓度限制指的是在特定环境中某种物质的最大允许浓度。这个概念对维持生态平衡和确保公众健康至关重要。例如，在讨论水体中的污染物时，浓度限制帮助确定水生生物和人类消费的安全水平。超过这些限制可能导致生态系统的有害影响，例如鱼类死亡和水质恶化。此外，浓度限制不仅适用于水，还适用于空气质量和土壤污染。监管机构根据广泛的研究和风险评估设定这些限制。例如，美国环境保护署（EPA）为各种危险物质制定了浓度限制，以保护环境和公众健康。这些法规对于控制工业过程中的排放以及防止有毒化学物质的有害暴露至关重要。遵守浓度限制的重要性可以通过饮用水中的铅案例来说明。铅是一种高度有毒的金属，可能导致严重的健康问题，尤其是在儿童中。EPA将饮用水中铅的浓度限制设定为每十亿分之15（ppb）。当铅浓度超过这一阈值时，会触发强制措施以降低铅浓度，保护公众健康。除了环境健康外，浓度限制的概念在化学领域也至关重要，特别是在实验室环境中。化学家通常处理各种试剂和溶剂，理解这些物质的浓度限制对于安全实验至关重要。超过某种化学物质的浓度限制可能导致危险反应，从而导致事故或有害暴露。因此，实验室协议通常包括关于实验中使用化学品的允许浓度的严格指南。此外，工业在开发产品时也必须考虑浓度限制。例如，化妆品和个人护理产品受到规定的约束，这些规定规定了某些成分的最大允许浓度。这确保了产品对消费者使用的安全性，不会带来健康风险。公司必须进行彻底的测试，以确保其产品符合这些浓度限制，因为未能做到这一点可能导致法律后果并损害其声誉。总之，浓度限制的概念对环境科学、化学和产品安全等多个领域至关重要。理解和遵守这些限制对于保护公众健康、保护生态系统以及确保实验室和工业中的安全实践至关重要。随着我们继续面临环境挑战和健康问题，浓度限制的重要性只会增加，强调了持续研究和监管警惕的必要性，以保持我们环境中有害物质的安全浓度。