atomic absorption spectrophotometry

简明释义

原子吸收分光光度法

英英释义

例句

1.The laboratory utilized atomic absorption spectrophotometry 原子吸收光谱法 to analyze the metal content in water samples.

实验室利用原子吸收光谱法来分析水样中的金属含量。

2.Using atomic absorption spectrophotometry 原子吸收光谱法, researchers were able to determine the concentration of lead in blood samples.

研究人员使用原子吸收光谱法能够确定血样中铅的浓度。

3.In environmental studies, atomic absorption spectrophotometry 原子吸收光谱法 is essential for measuring heavy metals in soil.

在环境研究中，原子吸收光谱法对于测量土壤中的重金属至关重要。

4.The quality control team employed atomic absorption spectrophotometry 原子吸收光谱法 to ensure the safety of food products.

质量控制团队采用原子吸收光谱法来确保食品产品的安全性。

5.The pharmaceutical company relied on atomic absorption spectrophotometry 原子吸收光谱法 to analyze the purity of their drug formulations.

制药公司依靠原子吸收光谱法来分析其药物配方的纯度。

作文

In the realm of analytical chemistry, one of the most significant techniques employed for the determination of elemental concentrations is atomic absorption spectrophotometry. This method is particularly useful in various fields such as environmental monitoring, food safety, and clinical analysis. The principle behind atomic absorption spectrophotometry lies in the absorption of light by free atoms in the gaseous state. When a sample containing a specific metal is vaporized in a flame or a graphite furnace, the atoms absorb light at characteristic wavelengths. This absorption can be quantitatively measured, allowing scientists to determine the concentration of the element in the sample. The procedure for atomic absorption spectrophotometry typically involves several steps. First, a sample is prepared, which may involve digestion or dilution depending on the matrix of the sample. Next, the sample is introduced into the atomizer, where it is converted into an aerosol and then atomized in a flame or furnace. A light beam from a hollow cathode lamp, which emits light at the specific wavelength of the target element, passes through the atomized sample. The amount of light absorbed by the atoms is directly proportional to the concentration of the element in the sample, following Beer's Law.One of the advantages of atomic absorption spectrophotometry is its high sensitivity and specificity. It can detect trace amounts of metals, making it invaluable for analyzing contaminants in water sources or heavy metals in food products. For instance, regulatory agencies often use this technique to ensure that drinking water meets safety standards by checking for harmful levels of lead or mercury. In the agricultural sector, atomic absorption spectrophotometry aids in assessing soil and plant health by measuring nutrient levels, thus contributing to better crop management practices.However, like any analytical technique, atomic absorption spectrophotometry has its limitations. The method is generally restricted to the analysis of metals and some metalloids, which means that organic compounds cannot be analyzed using this technique. Additionally, the presence of interfering substances in complex matrices can affect the accuracy of the results. Therefore, proper sample preparation and method validation are crucial to obtaining reliable data.In conclusion, atomic absorption spectrophotometry is a powerful analytical tool that plays a vital role in various scientific disciplines. Its ability to provide precise measurements of elemental concentrations makes it essential for ensuring public health and safety, as well as for advancing research in environmental science and agriculture. As technology continues to evolve, it is likely that atomic absorption spectrophotometry will be further refined, enhancing its capabilities and expanding its applications in the future.

在分析化学领域，最重要的技术之一是用于确定元素浓度的原子吸收光谱法。这种方法在环境监测、食品安全和临床分析等多个领域中尤其有用。原子吸收光谱法的原理在于气态自由原子对光的吸收。当包含特定金属的样品在火焰或石墨炉中气化时，原子会在特征波长处吸收光。这种吸收可以定量测量，从而使科学家能够确定样品中元素的浓度。原子吸收光谱法的过程通常包括几个步骤。首先，准备样品，这可能涉及消化或稀释，具体取决于样品的基质。接下来，将样品引入原子化器，在那里将其转化为气雾，然后在火焰或炉中原子化。来自空心阴极灯的光束以目标元素特定波长发射，通过气化样品。原子吸收的光量与样品中元素的浓度成正比，遵循比尔定律。原子吸收光谱法的一个优点是其高灵敏度和特异性。它可以检测痕量金属，使其在分析水源中的污染物或食品中的重金属方面不可或缺。例如，监管机构经常使用此技术确保饮用水符合安全标准，检查铅或汞的有害水平。在农业部门，原子吸收光谱法通过测量营养水平来帮助评估土壤和植物健康，从而有助于更好的作物管理实践。然而，与任何分析技术一样，原子吸收光谱法也有其局限性。这种方法通常仅限于金属和某些类金属元素的分析，这意味着无法使用该技术分析有机化合物。此外，复杂基质中干扰物质的存在可能会影响结果的准确性。因此，适当的样品准备和方法验证对于获得可靠数据至关重要。总之，原子吸收光谱法是一种强大的分析工具，在各个科学学科中发挥着至关重要的作用。它提供精确的元素浓度测量，使其在确保公共健康和安全以及推动环境科学和农业研究方面至关重要。随着技术的不断发展，原子吸收光谱法可能会进一步完善，提高其能力并扩大未来的应用。