emission flame photometry

简明释义

发射火焰光度法

英英释义

例句

1.The accuracy of emission flame photometry 发射火焰光度法 makes it a preferred choice for analyzing soil nutrients.

由于准确性高，发射火焰光度法 发射火焰光度法 成为分析土壤养分的首选。

2.In environmental laboratories, emission flame photometry 发射火焰光度法 is often used to measure the concentration of sodium in water samples.

在环境实验室中，发射火焰光度法 发射火焰光度法 常用于测量水样中钠的浓度。

3.The simplicity of emission flame photometry 发射火焰光度法 allows for rapid testing in field conditions.

由于简单性，发射火焰光度法 发射火焰光度法 允许在现场条件下进行快速测试。

4.Researchers utilized emission flame photometry 发射火焰光度法 to determine potassium levels in agricultural products.

研究人员利用发射火焰光度法 发射火焰光度法 确定农业产品中的钾含量。

5.For clinical applications, emission flame photometry 发射火焰光度法 can help in diagnosing electrolyte imbalances.

在临床应用中，发射火焰光度法 发射火焰光度法 可以帮助诊断电解质失衡。

作文

Emission flame photometry is a widely used analytical technique that allows for the determination of certain metal ions in solution based on their characteristic emission spectra when exposed to a flame. This method is particularly valuable in fields such as environmental monitoring, agriculture, and clinical diagnostics, where precise measurements of trace elements are crucial. In essence, emission flame photometry (发射火焰光度法) involves introducing a sample into a flame, where the heat excites the metal ions, causing them to emit light at specific wavelengths. The intensity of this emitted light is directly proportional to the concentration of the metal ions present in the sample, making it possible to quantify their levels accurately.The principle behind emission flame photometry is based on atomic emission spectroscopy. When a sample containing metal ions is introduced into a flame, the thermal energy provided by the flame excites the electrons in the metal atoms. As these excited electrons return to their ground state, they release energy in the form of light. Each element emits light at characteristic wavelengths, allowing for the identification and quantification of various metals. For instance, sodium emits a bright yellow light, while potassium produces a lilac hue. By measuring the intensity of the emitted light using a photodetector, analysts can determine the concentration of these elements in the sample.One of the significant advantages of emission flame photometry is its simplicity and cost-effectiveness compared to other analytical techniques like inductively coupled plasma mass spectrometry (ICP-MS). The equipment required for flame photometry is relatively inexpensive, and the method can be performed with minimal sample preparation. However, it is essential to note that this technique is primarily limited to alkali and alkaline earth metals, such as lithium, sodium, potassium, calcium, and magnesium. Therefore, it may not be suitable for analyzing samples containing a wide range of metal ions or those requiring more sophisticated detection methods.In practical applications, emission flame photometry is often utilized in soil and plant analysis to assess nutrient levels. For example, farmers can use this technique to measure the concentration of potassium in soil samples to ensure optimal crop growth. Similarly, in clinical laboratories, it can be employed to monitor electrolyte levels in blood serum, aiding in the diagnosis of various health conditions.Despite its limitations, emission flame photometry remains a popular choice due to its rapid analysis time and ease of use. Laboratories can process multiple samples quickly, providing timely results that are essential for decision-making in agricultural practices and clinical settings. Furthermore, advancements in technology have led to the development of more sophisticated flame photometers that offer enhanced sensitivity and accuracy, broadening the scope of this technique.In conclusion, emission flame photometry (发射火焰光度法) is an essential analytical tool that provides valuable insights into the concentration of metal ions in various samples. Its straightforward methodology, cost-effectiveness, and quick turnaround times make it an attractive option for many industries. With ongoing developments in instrumentation and methodology, the future of this technique looks promising, ensuring its continued relevance in analytical chemistry.

发射火焰光度法是一种广泛使用的分析技术，允许根据金属离子在火焰中暴露时产生的特征发射光谱来确定溶液中某些金属离子的含量。这种方法在环境监测、农业和临床诊断等领域尤其重要，因为这些领域对微量元素的精确测量至关重要。简单来说，emission flame photometry（发射火焰光度法）涉及将样品引入火焰中，火焰的热量激发金属离子，使其以特定波长发出光。该发出的光的强度与样品中金属离子的浓度成正比，从而使得准确量化其水平成为可能。emission flame photometry 的原理基于原子发射光谱。当含有金属离子的样品被引入火焰中时，火焰提供的热能激发金属原子中的电子。当这些激发的电子返回到基态时，它们释放出能量，以光的形式表现出来。每种元素在特征波长处发出光，使得能够识别和量化各种金属。例如，钠发出明亮的黄色光，而钾则产生紫色光。通过使用光电探测器测量发光的强度，分析人员可以确定样品中这些元素的浓度。emission flame photometry 的一个显著优势是与其他分析技术（如感应耦合等离子体质谱法 ICP-MS）相比，其简便性和经济性。所需的火焰光度计设备相对便宜，并且该方法可以在最小样品准备的情况下进行。然而，需要注意的是，这种技术主要限于碱金属和碱土金属，例如锂、钠、钾、钙和镁。因此，对于分析含有多种金属离子或需要更复杂检测方法的样品，可能不太适用。在实际应用中，emission flame photometry 经常用于土壤和植物分析，以评估养分水平。例如，农民可以使用这种技术测量土壤样品中钾的浓度，以确保作物的最佳生长。同样，在临床实验室中，它可用于监测血清中的电解质水平，从而帮助诊断各种健康状况。尽管存在局限性，emission flame photometry 仍然因其快速分析时间和易用性而受到欢迎。实验室可以快速处理多个样品，提供及时的结果，这对于农业实践和临床设置中的决策至关重要。此外，技术的进步导致了更复杂的火焰光度计的发展，提供了更高的灵敏度和准确性，拓宽了这一技术的应用范围。总之，emission flame photometry（发射火焰光度法）是一种重要的分析工具，为各种样品中金属离子的浓度提供了宝贵的见解。其简单的方法、经济性和快速的周转时间使其成为许多行业的理想选择。随着仪器和方法的不断发展，这一技术的未来看起来很有前景，确保其在分析化学中的持续相关性。