含水量測定的基礎知識
本手冊將概述卡爾費雪滴定法的發展歷史。當中將說明化學反應,以及容積法與庫侖法兩大測量技術。
Karl Fischer Titration–Collection of Guides |
The Karl Fischer method is a widely used standard method for determining water content in various samples, and it is used in different parts of the production chain, including in R&D, quality control, and production monitoring. It can measure water content from as low as 1ppm to as high as 100%. These guides provide a comprehensive overview of the Karl Fischer method, including its history, chemical reactions, measuring techniques, sample preparation, sampling techniques, and method selection. They are split up into four documents, each one covering a specific topic:
To fully understand the Karl Fischer method, the first guide in the set provides a brief historical overview of its development and explains the underlying chemical reaction based on R.W. Bunsen’s theory. Additionally, the two major measuring techniques, volumetry and coulometry, are discussed in detail.
One of the challenges of the Karl Fischer method is sample preparation. The second guide of the set focuses on more advanced sample preparation procedures than the simple dissolution in the titration cell.
The third guide in the set discusses various sampling techniques that have been developed to accommodate the varying nature of samples. This guide offers important guidelines for drawing samples to determine the water content. These tips and tricks are based on the experience of application chemists and are well-proven through daily practice.
Finally, the last guide in the set summarizes the various KF titration methods currently in use and recommends the methods that are specifically suitable for each sample type. The guide is compiled in table form for a fast and easy overview.
Karl Fischer Titration Basics, Methods and Techniques
本手冊將概述卡爾費雪滴定法的發展歷史。當中將說明化學反應,以及容積法與庫侖法兩大測量技術。
This guide provides an overview and explains advanced sample preparation procedures beyond simple sample dissolution in the titration cell.
本指南說明了採樣時應遵循的重要提示及訣竅,以便按照卡爾費雪滴定法測定水分含量。
This guide recommends the methods suitable for each specific sample type and summarizes the various KF titration methods currently in use.