weighing buret

简明释义

量滴定管

英英释义

例句

1.The laboratory technician calibrated the weighing buret before starting the analysis.

实验室技术员在开始分析之前对称量滴定管进行了校准。

2.The chemist used a weighing buret to accurately measure the volume of liquid needed for the experiment.

化学家使用称量滴定管准确测量实验所需的液体体积。

3.In titration experiments, a weighing buret ensures precise delivery of reagents.

在滴定实验中，称量滴定管确保试剂的精确投放。

4.The weighing buret was filled with the titrant solution for the acid-base reaction.

为了酸碱反应，称量滴定管被填充了滴定剂溶液。

5.Using a weighing buret can reduce errors in volumetric measurements.

使用称量滴定管可以减少体积测量中的误差。

作文

In the realm of analytical chemistry, precision is paramount. One of the essential tools that chemists rely on for accurate measurements is the weighing buret. A weighing buret is a specialized piece of laboratory equipment designed to measure the volume of liquid with high accuracy while also allowing for the measurement of its mass. This dual functionality makes it an invaluable asset in various chemical analyses, particularly in titrations and gravimetric analyses.The weighing buret combines features of a traditional buret and a balance. It is typically constructed from high-quality glass, which ensures that the liquid's properties are not altered by the container. The buret is fitted with a stopcock at the bottom, enabling precise control over the liquid's flow. What sets the weighing buret apart is its ability to be placed on a balance scale, allowing chemists to determine the mass of the liquid contained within it before and after a reaction. This feature is crucial for calculating the exact amount of reagent used in a chemical process, thereby enhancing the accuracy of experimental results.When using a weighing buret, it is important to follow specific protocols to ensure accurate measurements. First, the buret must be calibrated properly. Calibration involves filling the buret with a known volume of liquid and weighing it to establish a baseline. Once calibrated, the chemist can dispense the liquid into a reaction vessel while simultaneously recording the mass. The difference in mass before and after dispensing provides an accurate measure of the volume used, taking into account the density of the liquid.Moreover, the use of a weighing buret minimizes the risk of errors that can occur during manual measurements. Traditional volumetric methods may introduce parallax errors or inaccuracies due to improper eye level alignment, but the weighing buret allows for a more straightforward approach to measuring liquids. By relying on weight rather than volume alone, chemists can achieve higher precision, which is particularly vital in quantitative analysis where even minor discrepancies can lead to significant variations in results.In addition to its accuracy, the weighing buret also enhances efficiency in the laboratory. It allows for rapid dispensing of reagents, which is particularly useful during titrations where timing and precision are critical. Chemists can quickly adjust the flow of the liquid and monitor changes in mass in real-time, facilitating a smoother workflow.Furthermore, the versatility of the weighing buret extends beyond simple titrations. It can be used in various applications such as preparing standard solutions, conducting dilution series, and performing complex chemical reactions where precise measurements are essential. Its ability to accommodate different types of liquids, including corrosive and viscous substances, further underscores its importance in a modern laboratory setting.In conclusion, the weighing buret is a vital instrument in analytical chemistry that significantly improves the accuracy and efficiency of liquid measurements. Its unique design and dual functionality make it an indispensable tool for chemists striving for precision in their work. As laboratories continue to evolve and embrace new technologies, the weighing buret remains a cornerstone of reliable chemical analysis, ensuring that results are both reproducible and trustworthy.

在分析化学领域，精确性是至关重要的。化学家依赖的基本工具之一就是称量滴定管。称量滴定管是一种专门的实验室设备，旨在以高精度测量液体的体积，同时还允许测量其质量。这种双重功能使其成为各种化学分析中的宝贵资产，特别是在滴定和重量分析中。称量滴定管结合了传统滴定管和天平的特点。它通常由高质量的玻璃制成，确保液体的性质不会被容器改变。滴定管底部配有一个阀门，使得液体流动的控制非常精确。称量滴定管的独特之处在于它可以放置在天平上，允许化学家在反应前后确定所含液体的质量。这一特性对于计算化学过程中使用的试剂的确切数量至关重要，从而提高实验结果的准确性。使用称量滴定管时，遵循特定的程序以确保准确测量非常重要。首先，必须正确校准滴定管。校准涉及用已知体积的液体填充滴定管并称重，以建立基线。一旦校准完成，化学家就可以将液体分配到反应容器中，同时记录质量。在分配前后的质量差异提供了使用的准确体积测量，考虑到液体的密度。此外，使用称量滴定管可以最小化在手动测量过程中可能出现的错误。传统的体积测量方法可能会引入视差误差或由于眼睛水平对齐不当而导致的不准确，但称量滴定管允许更简单的液体测量方法。通过依靠重量而非单纯的体积，化学家可以实现更高的精度，这在定量分析中尤为重要，因为即使是微小的差异也可能导致结果的显著变化。除了其准确性外，称量滴定管还提高了实验室的效率。它允许快速分配试剂，这在滴定过程中尤为重要，因为时机和精确性至关重要。化学家可以迅速调整液体的流动，并实时监控质量变化，从而促进更顺畅的工作流程。此外，称量滴定管的多样性不仅限于简单的滴定。它可以用于各种应用，例如准备标准溶液、进行稀释系列和执行复杂的化学反应，在这些情况下，精确测量是必不可少的。它能够容纳不同类型的液体，包括腐蚀性和粘稠物质，进一步强调了它在现代实验室环境中的重要性。总之，称量滴定管是分析化学中一种重要的仪器，它显著提高了液体测量的准确性和效率。其独特的设计和双重功能使其成为化学家在工作中追求精确性的不可或缺的工具。随着实验室的不断发展和新技术的应用，称量滴定管仍然是可靠化学分析的基石，确保结果既可重复又值得信赖。