average daily permissible concentration

简明释义

日平均容许浓度;

英英释义

例句

1.Monitoring the average daily permissible concentration of chemicals in the water supply is crucial for public health.

监测水供应中化学物质的平均每日允许浓度对公众健康至关重要。

2.The report highlighted that the average daily permissible concentration of carbon monoxide in the area had exceeded safe levels.

报告强调该地区的平均每日允许浓度一氧化碳已超过安全水平。

3.Regulatory agencies often publish guidelines on the average daily permissible concentration of various hazardous substances.

监管机构通常会发布有关各种有害物质的平均每日允许浓度的指南。

4.The factory must ensure that the emissions do not exceed the average daily permissible concentration of pollutants set by environmental regulations.

工厂必须确保排放不超过环境法规设定的平均每日允许浓度。

5.The laboratory conducted tests to determine if the average daily permissible concentration of lead in soil was within safe limits.

实验室进行了测试，以确定土壤中铅的平均每日允许浓度是否在安全限度内。

作文

In recent years, environmental pollution has become a pressing issue that affects the health and well-being of individuals worldwide. One of the key concepts in managing air and water quality is the notion of average daily permissible concentration, which refers to the maximum allowable levels of hazardous substances that can be present in the environment over a given day without posing significant health risks to the population. Understanding this term is crucial for both policymakers and the general public, as it helps to establish safe limits for exposure to pollutants.The average daily permissible concentration is determined based on extensive scientific research and risk assessments. These assessments take into account various factors, including the toxicity of the substance, the duration and frequency of exposure, and the vulnerable populations that may be at higher risk, such as children and the elderly. For instance, if a chemical is found to have harmful effects at certain levels, regulatory agencies will set a average daily permissible concentration that aims to protect public health while allowing for some level of industrial activity or agricultural use.One of the most significant applications of the average daily permissible concentration is in the regulation of air quality. Governments around the world monitor air pollution levels and issue guidelines regarding acceptable concentrations of pollutants like sulfur dioxide, nitrogen oxides, and particulate matter. By adhering to these guidelines, industries can minimize their impact on the environment, and communities can better protect their health. For example, during smoggy days, authorities may advise people to limit outdoor activities, especially for those with respiratory conditions, based on the current levels of pollutants compared to the average daily permissible concentration.Similarly, in the context of water quality, the average daily permissible concentration plays a critical role in safeguarding drinking water supplies. Contaminants such as heavy metals, pesticides, and bacteria can pose serious health risks if consumed at high levels. Regulatory bodies establish permissible limits for these substances based on their potential health impacts. Water treatment plants must ensure that the water they provide meets these standards, thereby protecting public health and ensuring access to safe drinking water.The concept of average daily permissible concentration also extends to food safety. Pesticide residues, for example, are regulated to ensure that the levels found in food products remain within safe limits. The establishment of these limits is based on toxicological studies that determine what constitutes a safe level of exposure over time. Consumers can feel more secure knowing that the foods they eat have been tested against the average daily permissible concentration for harmful substances.In conclusion, the average daily permissible concentration serves as a vital benchmark in environmental health and safety regulations. It provides a scientifically backed framework for determining safe levels of exposure to various pollutants in air, water, and food. As we continue to face environmental challenges, understanding and adhering to these permissible concentrations will be essential for protecting public health and ensuring a sustainable future. Awareness and education about the importance of these guidelines can empower individuals and communities to advocate for cleaner environments and healthier living conditions.

近年来，环境污染已成为一个紧迫的问题，影响着全球人们的健康和福祉。在管理空气和水质方面，一个关键的概念是平均每日允许浓度，它指的是在给定的一天内，环境中可以存在的有害物质的最大允许水平，而不会对公众健康构成重大风险。理解这个术语对于政策制定者和普通公众至关重要，因为它有助于建立对污染物暴露的安全限制。平均每日允许浓度是基于广泛的科学研究和风险评估确定的。这些评估考虑了各种因素，包括物质的毒性、暴露的持续时间和频率，以及可能面临更高风险的脆弱人群，例如儿童和老年人。例如，如果发现某种化学物质在某些浓度下具有有害影响，监管机构将设定一个平均每日允许浓度，旨在保护公众健康，同时允许一些工业活动或农业使用。平均每日允许浓度的一个重要应用是在空气质量的监管中。世界各国政府监测空气污染水平，并就可接受的污染物浓度如二氧化硫、氮氧化物和颗粒物发布指导方针。通过遵守这些指导方针，企业可以最小化对环境的影响，社区可以更好地保护他们的健康。例如，在雾霾天气，相关部门可能会根据当前污染物的水平与平均每日允许浓度的比较，建议人们限制户外活动，特别是对呼吸系统疾病患者。同样，在水质的背景下，平均每日允许浓度在保护饮用水供应方面发挥着关键作用。重金属、农药和细菌等污染物在高浓度下可能对健康构成严重风险。监管机构为这些物质建立了允许的限值，基于其潜在的健康影响。水处理厂必须确保他们提供的水符合这些标准，从而保护公众健康，确保安全饮用水的获取。平均每日允许浓度的概念也延伸到食品安全。农药残留例如受到监管，以确保食品产品中发现的水平保持在安全范围内。这些限值的建立基于毒理学研究，确定什么构成长期暴露的安全水平。消费者可以更加安心，因为他们所吃的食品已经针对有害物质的平均每日允许浓度进行了测试。总之，平均每日允许浓度作为环境健康和安全法规中的一个重要基准，提供了一个科学支持的框架，用于确定空气、水和食品中各种污染物的安全暴露水平。随着我们继续面临环境挑战，理解和遵守这些允许浓度对于保护公众健康和确保可持续未来至关重要。提高对这些指导方针重要性的意识和教育，可以使个人和社区能够倡导更清洁的环境和更健康的生活条件。