trace concentration

简明释义

痕量浓度

英英释义

例句

1.Even at a trace concentration, the chemical can be harmful to aquatic life.

即使在微量浓度下，这种化学物质也可能对水生生物有害。

2.Scientists use sensitive instruments to detect trace concentrations of substances.

科学家使用敏感仪器来检测物质的微量浓度。

3.Regulatory agencies set limits for trace concentrations of certain toxins.

监管机构为某些毒素设定了微量浓度的限制。

4.The study measured the trace concentration of pollutants in the air.

研究测量了空气中污染物的微量浓度。

5.The laboratory detected a trace concentration of lead in the water sample.

实验室在水样中检测到了微量浓度的铅。

作文

In the field of environmental science, the term trace concentration refers to the very low levels of a substance found within a given sample, typically measured in parts per million (ppm) or even parts per billion (ppb). Understanding trace concentration is crucial for assessing the impact of pollutants on ecosystems and human health. For instance, heavy metals like lead or mercury can exist in trace concentrations in water bodies, yet their effects can be devastating. Even at low levels, these substances can accumulate in the food chain, leading to severe health issues for both wildlife and humans.To illustrate, consider the case of lead contamination in urban areas. Studies have shown that even a trace concentration of lead in drinking water can pose significant health risks, particularly to children, who are more vulnerable to its toxic effects. This highlights the importance of monitoring trace concentrations of harmful substances in our environment. Regulatory agencies often set strict limits on acceptable trace concentrations to protect public health.Moreover, trace concentration analysis is not limited to pollutants. In the field of pharmaceuticals, detecting the trace concentration of active ingredients in a drug formulation is essential for ensuring efficacy and safety. For example, if a medication contains a trace concentration of an impurity, it could affect the overall effectiveness of the treatment or lead to adverse reactions.The methods used to measure trace concentrations have advanced significantly over the years. Techniques such as mass spectrometry and gas chromatography allow scientists to detect and quantify substances at incredibly low levels. These advancements enable researchers to study the behavior of chemicals in the environment more accurately and develop strategies to mitigate their impacts.Additionally, understanding trace concentrations can aid in forensic investigations. Forensic scientists often analyze trace concentrations of substances found at crime scenes to gather evidence and build cases. The ability to detect minute amounts of chemicals can provide critical links between suspects and criminal activities.In conclusion, the concept of trace concentration plays a vital role across various fields, from environmental science to pharmaceuticals and forensics. As we continue to face challenges related to pollution and public health, the importance of monitoring and understanding trace concentrations cannot be overstated. By prioritizing research and regulation in this area, we can work towards a safer and healthier environment for all. Overall, the implications of trace concentration extend far beyond scientific curiosity; they directly impact our well-being and the health of our planet.

在环境科学领域，术语trace concentration指的是在给定样本中发现的非常低水平的物质，通常以百万分之一（ppm）或甚至十亿分之一（ppb）来测量。理解trace concentration对于评估污染物对生态系统和人类健康的影响至关重要。例如，重金属如铅或汞可能以trace concentrations的形式存在于水体中，但它们的影响可能是毁灭性的。即使在低水平下，这些物质也会在食物链中积累，导致野生动物和人类严重的健康问题。例如，考虑城市地区的铅污染案例。研究表明，即使在饮用水中存在trace concentration的铅，也会对健康构成重大风险，特别是对儿童，他们对其毒性影响更为脆弱。这突显了监测我们环境中有害物质的trace concentrations的重要性。监管机构通常对可接受的trace concentrations设定严格限制，以保护公众健康。此外，trace concentration分析不仅限于污染物。在制药领域，检测药物制剂中活性成分的trace concentration对于确保疗效和安全性至关重要。例如，如果一种药物含有trace concentration的杂质，它可能会影响治疗的整体效果或导致不良反应。用于测量trace concentrations的方法近年来有了显著进步。质谱法和气相色谱法等技术使科学家能够在极低水平上检测和量化物质。这些进展使研究人员能够更准确地研究化学物质在环境中的行为，并制定减轻其影响的策略。此外，理解trace concentrations可以帮助法医调查。法医科学家经常分析犯罪现场发现的物质的trace concentrations以收集证据并建立案件。检测微量化学物质的能力可以为嫌疑人和犯罪活动之间提供关键联系。总之，trace concentration的概念在各个领域发挥着至关重要的作用，从环境科学到制药和法医。随着我们继续面临与污染和公共健康相关的挑战，监测和理解trace concentrations的重要性不容小觑。通过优先考虑这一领域的研究和监管，我们可以朝着为所有人创造一个更安全、更健康的环境而努力。总体而言，trace concentration的影响远远超出了科学好奇心；它们直接影响我们的福祉和我们星球的健康。