atomic absorption spectrometry

简明释义

原子吸收光谱法

英英释义

例句

1.The pharmaceutical company used atomic absorption spectrometry to ensure the purity of their compounds.

制药公司使用原子吸收光谱法确保其化合物的纯度。

2.In environmental studies, atomic absorption spectrometry is crucial for assessing pollution levels.

在环境研究中，原子吸收光谱法对于评估污染水平至关重要。

3.Researchers employed atomic absorption spectrometry for the detection of trace elements in soil.

研究人员采用原子吸收光谱法检测土壤中的微量元素。

4.The laboratory utilized atomic absorption spectrometry to analyze the metal content in water samples.

实验室利用原子吸收光谱法分析水样中的金属含量。

5.For quality control, the factory implemented atomic absorption spectrometry to monitor metal contaminants.

为了质量控制，工厂实施了原子吸收光谱法以监测金属污染物。

作文

In the field of analytical chemistry, various techniques are employed to determine the concentration of elements in different samples. One such technique is atomic absorption spectrometry, which is widely used for its sensitivity and accuracy. 原子吸收光谱法 is based on the principle that atoms absorb light at specific wavelengths. When a sample is introduced into the instrument, it is typically atomized in a flame or graphite furnace, allowing the individual atoms to absorb light from a light source. This absorption of light is then measured to quantify the concentration of the element of interest.The process begins with the preparation of the sample, which may involve dilution or digestion depending on the nature of the material being analyzed. Once the sample is ready, it is introduced into the atomic absorption spectrometry system. The light source, usually a hollow cathode lamp, emits light at the characteristic wavelength of the element being analyzed. As the light passes through the vaporized sample, some of it is absorbed by the atoms present, which results in a decrease in the intensity of the transmitted light.The degree of absorption is directly proportional to the concentration of the element in the sample, following Beer-Lambert's law. This relationship allows for the quantification of the element by comparing the measured absorbance to a calibration curve created from known standards. The ability to detect trace levels of metals makes atomic absorption spectrometry an invaluable tool in various industries, including environmental monitoring, food safety, and clinical analysis.One of the significant advantages of atomic absorption spectrometry is its capability to analyze multiple elements simultaneously or sequentially with high precision. Additionally, it can be applied to a wide range of matrices, from liquids to solids, making it versatile for different applications. However, there are limitations to this technique as well. For instance, it is primarily suited for the analysis of metals and metalloids, and it may not be effective for non-metallic elements.Moreover, the presence of interfering substances in the sample can affect the accuracy of the results. Therefore, proper sample preparation and method validation are critical steps to ensure reliable data. Despite these challenges, atomic absorption spectrometry remains one of the most trusted methods in laboratories around the world.In conclusion, atomic absorption spectrometry is a powerful analytical technique that provides essential information about the elemental composition of samples. Its ability to deliver precise and accurate results makes it a preferred choice for scientists and researchers. As technology continues to advance, we can expect improvements in the efficiency and capabilities of atomic absorption spectrometry, further enhancing its role in analytical chemistry and various fields of study.

在分析化学领域，采用多种技术来确定不同样品中元素的浓度。其中一种技术是原子吸收光谱法，因其灵敏度和准确性而被广泛使用。atomic absorption spectrometry基于原子在特定波长下吸收光的原理。当样品被引入仪器时，通常在火焰或石墨炉中雾化，使单个原子能够吸收来自光源的光。然后测量这种光的吸收以量化感兴趣元素的浓度。该过程始于样品的准备，这可能涉及稀释或消化，具体取决于待分析材料的性质。一旦样品准备好，就会将其引入原子吸收光谱法系统。光源通常是一个空心阴极灯，发出待分析元素特征波长的光。当光通过气化样品时，其中一些光被存在的原子吸收，从而导致透射光强度的降低。吸收程度与样品中元素的浓度成正比，遵循比尔-朗伯定律。这种关系使得通过将测得的吸光度与已知标准创建的校准曲线进行比较，从而量化元素的浓度。检测金属微量的能力使得原子吸收光谱法在环境监测、食品安全和临床分析等各个行业中成为一项宝贵的工具。原子吸收光谱法的一大显著优势是其能够高精度地同时或顺序分析多种元素。此外，它可以应用于广泛的基质，从液体到固体，使其在不同应用中具有多功能性。然而，该技术也存在一些局限性。例如，它主要适用于金属和类金属元素的分析，可能对非金属元素不够有效。此外，样品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是确保可靠数据的关键步骤。尽管面临这些挑战，原子吸收光谱法仍然是世界各地实验室中最可信赖的方法之一。总之，原子吸收光谱法是一种强大的分析技术，提供了有关样品元素组成的重要信息。其提供精确和准确结果的能力使其成为科学家和研究人员的首选。随着技术的不断进步，我们可以期待原子吸收光谱法在效率和能力上的改善，进一步增强其在分析化学和各个研究领域中的作用。