detection limit

简明释义

探测极限

英英释义

例句

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

实验室报告显示，水样中铅的detection limit（检测限）为0.01毫克/升。

2.Regulatory agencies often set a detection limit (检测限) to ensure safety standards are met.

监管机构通常设定detection limit（检测限）以确保安全标准得到满足。

3.The detection limit (检测限) of the new assay method is significantly lower than previous methods.

新检测方法的detection limit（检测限）明显低于以前的方法。

4.The detection limit (检测限) for pesticide residues in food is an important factor for consumer safety.

食品中农药残留的detection limit（检测限）是消费者安全的重要因素。

5.In environmental testing, knowing the detection limit (检测限) is crucial for assessing contamination levels.

在环境检测中，了解detection limit（检测限）对于评估污染水平至关重要。

作文

In scientific research and analytical chemistry, the term detection limit refers to the lowest concentration of an analyte that can be reliably detected but not necessarily quantified. This concept is crucial in various fields, including environmental monitoring, pharmaceuticals, and food safety, where understanding trace amounts of substances can have significant implications. For instance, when testing for contaminants in drinking water, the detection limit determines whether a substance is present at levels that might pose health risks to the population. If the detection limit is too high, dangerous chemicals could go unnoticed, leading to severe consequences for public health.The importance of the detection limit becomes even more apparent in clinical diagnostics. In medical tests, especially those related to infectious diseases or cancer markers, knowing the detection limit can help clinicians make informed decisions about patient care. For example, if a blood test for a specific virus has a detection limit that is higher than the viral load present in a patient, the test may return a false negative result. This could delay treatment and worsen the patient’s condition.Moreover, the detection limit is influenced by several factors, including the method used for analysis, the quality of the reagents, and the equipment's sensitivity. Researchers often strive to lower the detection limit to improve their methods, enabling them to detect smaller quantities of substances. This is particularly important in fields like forensic science, where the ability to detect minute traces of evidence can be pivotal in solving crimes.It is also worth noting that the detection limit is not a fixed value; it can vary based on the specific conditions under which measurements are taken. Factors such as temperature, humidity, and the presence of interfering substances can all affect the detection limit. Therefore, scientists must carefully calibrate their instruments and validate their methods to ensure accurate results.In summary, the concept of detection limit is fundamental in many scientific disciplines. Understanding and improving the detection limit allows researchers and professionals to identify and quantify substances at very low concentrations, which is essential for ensuring safety, efficacy, and compliance with regulations. As technology advances, we can expect further improvements in our ability to detect and analyze substances at increasingly lower limits, enhancing our capacity to protect public health and the environment.

在科学研究和分析化学中，术语detection limit指的是可以可靠检测到的分析物最低浓度，但不一定能量化。这个概念在多个领域至关重要，包括环境监测、制药和食品安全，在这些领域，了解微量物质的存在可能会产生重大影响。例如，在测试饮用水中的污染物时，detection limit决定了某种物质是否存在于可能对公众健康构成风险的水平。如果detection limit过高，危险化学物质可能会被忽视，从而导致严重的公共健康后果。detection limit的重要性在临床诊断中变得更加明显。在医学检测中，尤其是与传染病或癌症标志物相关的检测，了解detection limit可以帮助临床医生做出明智的患者护理决策。例如，如果特定病毒的血液检测detection limit高于患者体内的病毒载量，则该检测可能返回假阴性结果。这可能会延误治疗，恶化患者的病情。此外，detection limit受到多种因素的影响，包括分析方法、试剂的质量和设备的灵敏度。研究人员通常努力降低detection limit以改善其方法，使他们能够检测到更小数量的物质。这在法医科学等领域尤为重要，因为检测微量证据的能力可能对解决犯罪至关重要。同样值得注意的是，detection limit不是固定值；它可能会根据测量所进行的特定条件而变化。温度、湿度和干扰物质的存在等因素都可能影响detection limit。因此，科学家必须仔细校准他们的仪器并验证他们的方法，以确保结果的准确性。总之，detection limit的概念在许多科学学科中是基础性的。理解和改善detection limit使研究人员和专业人士能够识别和量化极低浓度的物质，这对确保安全、有效性和遵守法规至关重要。随着技术的进步，我们可以期待在检测和分析物质的能力上取得进一步的改进，以更低的限度增强我们保护公共健康和环境的能力。