proximate analysis

简明释义

近似分析

英英释义

例句

1.The food industry often relies on proximate analysis to assess nutritional value.

食品行业通常依赖于近似分析来评估营养价值。

2.Before conducting experiments, researchers must perform a proximate analysis of their materials.

在进行实验之前，研究人员必须对他们的材料进行近似分析。

3.A thorough proximate analysis revealed the presence of harmful substances in the water.

全面的近似分析揭示了水中有害物质的存在。

4.In environmental studies, proximate analysis is essential for understanding soil composition.

在环境研究中，近似分析对于理解土壤成分至关重要。

5.The laboratory performed a proximate analysis to determine the moisture content of the sample.

实验室进行了近似分析以确定样品的水分含量。

作文

In the field of science and engineering, understanding the composition of materials is crucial for various applications. One important method used to analyze the composition of organic materials is known as proximate analysis. This technique provides a quick and reliable way to determine the basic components of a substance, particularly in fields such as agriculture, food science, and environmental studies. Proximate analysis refers to the measurement of the major constituents of a material, typically including moisture, ash, volatile matter, and fixed carbon. These components are essential for evaluating the quality and suitability of materials for specific purposes.For instance, in the context of coal, proximate analysis helps in assessing its energy content and combustion properties. By measuring the moisture content, one can determine how much energy will be lost during combustion due to water evaporation. The ash content indicates the inorganic residues left after combustion, which can affect the efficiency and environmental impact of using coal as a fuel source. Additionally, the volatile matter gives insights into the reactivity of the coal when burned, while the fixed carbon represents the solid combustible material that contributes to the heat generation.Another application of proximate analysis is in the food industry. Understanding the composition of food products is vital for nutritional labeling and quality control. For example, determining the moisture content in fruits and vegetables can help in assessing their shelf life and freshness. Similarly, analyzing the fat, protein, and carbohydrate content through proximate analysis allows manufacturers to create balanced diets and meet consumer demands for healthy options.Moreover, proximate analysis plays a significant role in environmental science. By analyzing soil and water samples, scientists can monitor pollution levels and assess the health of ecosystems. For example, measuring the organic matter content in soil can provide insights into its fertility and ability to support plant growth. In water analysis, understanding the levels of suspended solids and other components can help in managing water quality for human consumption and ecological balance.Despite its usefulness, it is essential to understand that proximate analysis provides only a preliminary overview of a material's composition. While it identifies the major constituents, it does not give detailed information about the specific compounds present. Therefore, for comprehensive analysis, additional methods such as elemental analysis or chromatographic techniques may be required. These methods can provide a more in-depth understanding of the chemical makeup of a substance, complementing the information obtained from proximate analysis.In conclusion, proximate analysis is a valuable tool across various disciplines, providing essential information about the composition of materials. Whether in assessing the quality of coal, ensuring food safety, or monitoring environmental health, this analytical technique serves as a foundational step in understanding material properties. As technology advances, integrating proximate analysis with more sophisticated analytical methods will enhance our ability to evaluate and utilize natural resources effectively.

在科学和工程领域，理解材料的组成对于各种应用至关重要。一种用于分析有机材料组成的重要方法被称为近似分析。该技术提供了一种快速可靠的方法来确定物质的基本成分，特别是在农业、食品科学和环境研究等领域。近似分析是指对材料主要成分的测量，通常包括水分、灰分、挥发性物质和固定碳。这些成分对于评估材料的质量和特定用途的适用性至关重要。例如，在煤炭的背景下，近似分析有助于评估其能量含量和燃烧特性。通过测量水分含量，可以确定在燃烧过程中由于水分蒸发而损失的能量。灰分含量指示燃烧后留下的无机残留物，这可能会影响煤作为燃料的效率和环境影响。此外，挥发性物质提供了关于煤在燃烧时反应性的见解，而固定碳则代表了有助于热量产生的固体可燃材料。近似分析的另一个应用是在食品工业中。了解食品产品的组成对营养标签和质量控制至关重要。例如，确定水果和蔬菜中的水分含量可以帮助评估其保质期和新鲜度。同样，通过近似分析分析脂肪、蛋白质和碳水化合物的含量使制造商能够创建均衡饮食，满足消费者对健康选择的需求。此外，近似分析在环境科学中也发挥着重要作用。通过分析土壤和水样，科学家可以监测污染水平并评估生态系统的健康。例如，测量土壤中的有机物含量可以提供关于其肥力和支持植物生长能力的见解。在水分析中，了解悬浮固体和其他成分的水平可以帮助管理人类消费和生态平衡的水质。尽管近似分析非常有用，但必须理解它仅提供材料组成的初步概述。虽然它识别出主要成分，但并未详细说明存在的具体化合物。因此，对于综合分析，可能需要额外的方法，例如元素分析或色谱技术。这些方法可以提供更深入的物质化学组成理解，补充通过近似分析获得的信息。总之，近似分析是各个学科中的有价值工具，提供关于材料组成的重要信息。无论是在评估煤炭质量、确保食品安全，还是监测环境健康，这种分析技术都作为理解材料属性的基础步骤。随着技术的进步，将近似分析与更复杂的分析方法相结合，将增强我们有效评估和利用自然资源的能力。