parts per trillion

简明释义

兆分之

英英释义

例句

1.During the study, the researchers found that carbon dioxide levels reached 400 parts per trillion (万亿分之一).

在研究中，研究人员发现二氧化碳水平达到了400 万亿分之一.

2.The laboratory reported that the pesticide residue was at a level of 10 parts per trillion (万亿分之一) in the soil.

实验室报告显示土壤中的农药残留水平为10 万亿分之一.

3.Scientists detected mercury in the fish at a concentration of 2 parts per trillion (万亿分之一).

科学家在鱼中发现汞浓度为2 万亿分之一.

4.Air quality tests showed that the level of ozone was 60 parts per trillion (万亿分之一) on that day.

空气质量测试显示当天臭氧水平为60 万亿分之一.

5.The concentration of lead in the water was measured at 5 parts per trillion (万亿分之一).

水中铅的浓度测量为5 万亿分之一.

作文

In recent years, the term parts per trillion has become increasingly relevant in discussions surrounding environmental science and public health. This measurement unit refers to the concentration of a substance in a solution or mixture, indicating how many units of a particular substance exist for every trillion units of the total solution. Understanding this concept is crucial, especially when it comes to assessing the safety of drinking water, air quality, and food products. The significance of parts per trillion lies in its ability to reveal the presence of contaminants that may be harmful to human health even in extremely small quantities.For instance, certain heavy metals and toxic chemicals can be present in our environment at concentrations measured in parts per trillion. A single drop of a contaminant in a large swimming pool could equate to such low levels, yet these minuscule amounts can still pose serious health risks. Studies have shown that exposure to substances like lead or mercury, even at parts per trillion levels, can lead to severe health issues over time, particularly in vulnerable populations such as children and pregnant women.The measurement of parts per trillion is not only applicable to environmental pollutants but also plays a significant role in the pharmaceutical industry. In drug development, ensuring that medications contain only trace amounts of impurities is essential for patient safety. Regulatory agencies often set strict limits on the acceptable levels of contaminants, expressed in parts per trillion, to ensure that drugs are safe for consumption.Moreover, scientists utilize parts per trillion to monitor atmospheric conditions. For example, greenhouse gases like carbon dioxide and methane are measured with this precision to understand their impact on climate change. Even slight increases in these gases, detectable at parts per trillion levels, can have profound effects on global temperatures and weather patterns. As such, tracking these measurements is vital for developing strategies to combat climate change effectively.In conclusion, the concept of parts per trillion is pivotal in various fields, including environmental science, public health, and pharmaceuticals. It underscores the importance of detecting and measuring contaminants even at the most minute levels. As we continue to face challenges related to pollution and health safety, the ability to measure substances in parts per trillion will remain a critical tool for researchers and policymakers alike. By understanding and utilizing this measurement, we can work towards a healthier and safer world for future generations.

近年来，术语parts per trillion在环境科学和公共健康的讨论中变得越来越相关。这个测量单位指的是溶液或混合物中某种物质的浓度，表示特定物质在总溶液中的一万亿个单位中存在多少个单位。理解这个概念至关重要，尤其是在评估饮用水安全、空气质量和食品产品时。parts per trillion的重要性在于它能够揭示即使在极小数量下也可能对人类健康有害的污染物的存在。例如，某些重金属和有毒化学物质可能以parts per trillion的浓度存在于我们的环境中。一滴污染物落入一个大型游泳池中就可以等同于如此低的水平，但这些微小的量仍然可能带来严重的健康风险。研究表明，即使在parts per trillion水平上接触铅或汞等物质，随着时间的推移也会导致严重的健康问题，特别是在儿童和孕妇等脆弱人群中。parts per trillion的测量不仅适用于环境污染物，在制药行业中也发挥着重要作用。在药物开发中，确保药物仅含有微量杂质对于患者安全至关重要。监管机构通常对可接受的污染物水平设定严格限制，以parts per trillion表示，以确保药物安全可供消费。此外，科学家利用parts per trillion来监测大气条件。例如，像二氧化碳和甲烷这样的温室气体以这种精度进行测量，以了解它们对气候变化的影响。即使是可检测到的parts per trillion水平的这些气体的微小增加，也可能对全球温度和天气模式产生深远影响。因此，跟踪这些测量对于制定有效应对气候变化的策略至关重要。总之，parts per trillion的概念在环境科学、公共健康和制药等多个领域中至关重要。它强调了即使在最微小的水平上检测和测量污染物的重要性。随着我们继续面临与污染和健康安全相关的挑战，能够以parts per trillion进行测量将继续成为研究人员和政策制定者的关键工具。通过理解和利用这一测量，我们可以为未来几代人创造一个更健康、更安全的世界。