atomic absorption spectrography

简明释义

原子吸收光谱法;

英英释义

例句

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

实验室使用原子吸收光谱法来分析水样中的金属含量。

2.During the quality control process, atomic absorption spectrography 原子吸收光谱法 is used to verify the concentration of heavy metals.

在质量控制过程中，使用原子吸收光谱法验证重金属的浓度。

3.In environmental studies, atomic absorption spectrography 原子吸收光谱法 is crucial for assessing pollution levels.

在环境研究中，原子吸收光谱法对评估污染水平至关重要。

4.The food safety lab utilizes atomic absorption spectrography 原子吸收光谱法 to ensure no harmful metals are present in products.

食品安全实验室利用原子吸收光谱法确保产品中没有有害金属。

5.By employing atomic absorption spectrography 原子吸收光谱法, researchers were able to detect trace elements in soil.

通过采用原子吸收光谱法，研究人员能够检测土壤中的微量元素。

作文

In the realm of analytical chemistry, one technique that has gained significant importance is atomic absorption spectrography. This method is widely used for quantitative analysis of various elements in a sample, making it a crucial tool in laboratories around the world. The principle behind atomic absorption spectrography is relatively straightforward: it involves measuring the amount of light absorbed by free atoms in the gaseous state. When a sample is introduced into a flame or a graphite furnace, the atoms are vaporized and enter the gas phase. By providing a specific wavelength of light, we can determine how much of that light is absorbed by the atoms of the element we are interested in.One of the primary advantages of atomic absorption spectrography is its sensitivity and selectivity. It can detect trace levels of metals and other elements, often down to parts per billion. This capability makes it invaluable in environmental testing, where monitoring pollutants in water and soil is essential for public health and safety. For instance, measuring lead levels in drinking water can be efficiently performed using this technique, ensuring compliance with safety regulations.Moreover, atomic absorption spectrography is not limited to environmental applications. It is also extensively used in pharmaceuticals, food and beverage industries, and clinical laboratories. In pharmaceuticals, ensuring the correct dosage of active ingredients is vital, and atomic absorption spectrography provides a reliable method for such analyses. Similarly, in the food industry, it helps in verifying the nutritional content and detecting harmful contaminants.The process of atomic absorption spectrography typically involves several steps. First, the sample must be prepared, which may include digestion or dilution depending on its nature. Then, the prepared sample is introduced into the atomizer, where it is converted into free atoms. Following this, a light beam of a specific wavelength is passed through the atomized sample. The amount of light absorbed is measured and compared against standard solutions to quantify the concentration of the element in the sample.Despite its many benefits, atomic absorption spectrography does have some limitations. One notable drawback is that it can only analyze one element at a time, making it less efficient for samples containing multiple elements. However, advancements in technology have led to the development of techniques such as simultaneous atomic absorption spectrography, which can measure multiple elements concurrently, thus improving throughput.In conclusion, atomic absorption spectrography is a powerful analytical tool that plays a vital role in various fields, from environmental science to pharmaceuticals. Its ability to provide accurate and sensitive measurements of elemental concentrations makes it indispensable in ensuring safety and compliance across numerous industries. As technology continues to evolve, the applications and efficiency of atomic absorption spectrography are likely to expand even further, solidifying its position as a cornerstone of modern analytical chemistry.

在分析化学领域，一种获得重要地位的技术是原子吸收光谱法。这种方法广泛用于样品中各种元素的定量分析，使其成为全球实验室中的关键工具。原子吸收光谱法的原理相对简单：它涉及测量气态自由原子吸收的光量。当样品被引入火焰或石墨炉中时，原子被气化并进入气相。通过提供特定波长的光，我们可以确定感兴趣元素的原子吸收了多少光。原子吸收光谱法的主要优点之一是其灵敏度和选择性。它可以检测到微量金属和其他元素，通常达到十亿分之一的水平。这一能力使其在环境测试中不可或缺，监测水和土壤中的污染物对于公共健康和安全至关重要。例如，使用该技术可以有效测量饮用水中的铅含量，以确保符合安全标准。此外，原子吸收光谱法不仅限于环境应用。它还广泛用于制药、食品和饮料行业以及临床实验室。在制药行业，确保活性成分的正确剂量至关重要，而原子吸收光谱法提供了一种可靠的分析方法。同样，在食品行业，它有助于验证营养成分和检测有害污染物。原子吸收光谱法的过程通常包括几个步骤。首先，必须准备样品，这可能包括消化或稀释，具体取决于其性质。然后，将准备好的样品引入原子化器，在那里它被转化为自由原子。接下来，特定波长的光束穿过气化样品。吸收的光量被测量，并与标准溶液进行比较，以量化样品中元素的浓度。尽管有许多优点，原子吸收光谱法确实存在一些局限性。一个显著的缺点是它只能一次分析一个元素，这使得它在处理包含多个元素的样品时效率较低。然而，技术的进步导致了同时原子吸收光谱法等技术的发展，可以同时测量多个元素，从而提高了通量。总之，原子吸收光谱法是一种强大的分析工具，在各个领域发挥着至关重要的作用，从环境科学到制药行业。其提供准确和灵敏的元素浓度测量的能力使其在确保各个行业的安全和合规性方面不可或缺。随着技术的不断发展，原子吸收光谱法的应用和效率可能会进一步扩展，巩固其作为现代分析化学基石的地位。