detection limit

简明释义

探测范围

英英释义

例句

1.The detection limit 检测限 for mercury in soil was found to be 0.5 ppm.

土壤中汞的detection limit 检测限被发现为0.5毫克/千克。

2.In this study, we determined the detection limit 检测限 of the new assay to be 5 pg/mL.

在这项研究中，我们确定新检测方法的detection limit 检测限为5皮克每毫升。

3.To ensure accurate results, it is crucial to know the detection limit 检测限 of the equipment used.

为了确保结果准确，了解所用设备的detection limit 检测限至关重要。

4.Researchers must validate the detection limit 检测限 before publishing their findings.

研究人员必须在发布他们的发现之前验证detection limit 检测限。

5.The laboratory reported that the detection limit 检测限 for lead in water samples is 0.01 mg/L.

实验室报告称水样中铅的detection limit 检测限为0.01毫克/升。

作文

The concept of the detection limit is crucial in various scientific fields, particularly in analytical chemistry and environmental monitoring. The detection limit refers to the lowest concentration of a substance that can be reliably detected but not necessarily quantified under the stated experimental conditions. This threshold is essential for researchers and professionals who need to ensure that they can identify the presence of specific compounds in complex mixtures, even when those compounds are present at very low levels.In analytical chemistry, the detection limit plays a significant role in determining the sensitivity of an analytical method. For instance, when testing for pollutants in water or air, it is vital to know the detection limit to ascertain whether a particular contaminant is present at harmful levels. If the detection limit of a method is too high, it may not be suitable for detecting trace amounts of hazardous substances, leading to potential health risks and environmental damage.Moreover, the detection limit can vary depending on several factors, including the type of analytical technique used, the sample matrix, and the conditions under which the analysis is performed. For example, gas chromatography may have a different detection limit compared to liquid chromatography due to the inherent differences in their operational principles. Additionally, the presence of interfering substances in a sample can elevate the detection limit, making it more challenging to identify the target analyte.Understanding the detection limit is also important in regulatory contexts. Environmental agencies often set strict guidelines for allowable concentrations of contaminants in air, water, and soil. Laboratories must use methods with appropriate detection limits to ensure compliance with these regulations. Failure to accurately detect substances below the established detection limit could result in legal repercussions and public health concerns.In clinical settings, the detection limit is equally significant. For instance, when diagnosing diseases, medical tests must be sensitive enough to detect biomarkers at low concentrations. A test with a high detection limit might miss early-stage diseases, leading to delayed treatment and poorer patient outcomes. Thus, healthcare providers rely on tests with low detection limits to provide timely and accurate diagnoses.To improve the detection limit of analytical methods, scientists continuously research and develop new technologies. Innovations such as mass spectrometry and advanced spectroscopic techniques have significantly enhanced our ability to detect low levels of substances. These advancements not only improve the accuracy of measurements but also expand the range of applications for analytical methods across various fields.In conclusion, the detection limit is a fundamental parameter in analytical science that affects how we detect and quantify substances in different environments. Its implications extend beyond the laboratory, influencing public health, environmental safety, and regulatory compliance. Therefore, understanding and optimizing the detection limit is essential for scientists and professionals dedicated to ensuring safety and accuracy in their work.

“检测限”这一概念在多个科学领域中至关重要，尤其是在分析化学和环境监测中。“检测限”指的是在所述实验条件下，能够可靠地检测到的物质最低浓度，但不一定能定量。这一阈值对于需要确保能够识别复杂混合物中具体化合物存在的研究人员和专业人士至关重要，即使这些化合物的含量极低。在分析化学中，“检测限”在确定分析方法的灵敏度方面发挥了重要作用。例如，在测试水或空气中的污染物时，了解“检测限”是至关重要的，以确定特定污染物是否存在于有害水平。如果某种方法的“检测限”过高，则可能不适合检测微量有害物质，从而导致潜在的健康风险和环境损害。此外，“检测限”因多种因素而异，包括所使用的分析技术类型、样品基质以及分析所进行的条件。例如，气相色谱法的“检测限”可能与液相色谱法不同，因为它们的操作原理存在固有差异。此外，样品中干扰物质的存在可能提高“检测限”，使得识别目标分析物更加困难。理解“检测限”在监管背景下同样重要。环保机构通常会为空气、水和土壤中的污染物设定严格的允许浓度标准。实验室必须使用具有适当“检测限”的方法以确保符合这些规定。如果未能准确检测到低于设定“检测限”的物质，可能会导致法律后果和公共健康问题。在临床环境中，“检测限”同样显得重要。例如，在诊断疾病时，医学检测必须足够灵敏，以检测低浓度的生物标志物。具有高“检测限”的检测可能会错过早期阶段的疾病，从而导致治疗延迟和患者预后较差。因此，医疗提供者依赖于具有低“检测限”的检测，以便及时和准确地进行诊断。为了提高分析方法的“检测限”，科学家们不断研究和开发新技术。质谱法和先进光谱技术等创新显著增强了我们检测低水平物质的能力。这些进步不仅提高了测量的准确性，还扩展了分析方法在各个领域的应用范围。总之，“检测限”是分析科学中的一个基本参数，它影响我们在不同环境中检测和定量物质的方式。其影响超出了实验室，影响公共健康、环境安全和监管合规。因此，理解和优化“检测限”对致力于确保工作安全和准确的科学家和专业人士来说至关重要。