Photothermal interferometry is an ultra-sensitive spectroscopic means for trace chemical detection in gas- and liquid-phase materials. Previous photothermal interferometry systems used free-space ...

Figure 1 shows the schematic of the Benfield process. The two steps are a gas absorption step and a subsequent regeneration of the absorbant. In the regenerator, the spent solvent is completely ...

Trace gas detection based on laser absorption spectroscopy (LAS) plays an important role in atmospheric monitoring, industrial emissions control, energy system and human breath analysis due to its ...

The microseepage of gaseous hydrocarbons often creates a soil atmosphere containing lighter hydrocarbons (C1-C5). The gases in the soil may be sampled and analyzed to determine the specific mix of ...

Alkanolamines are polyfunctional molecules that include the properties of both alcohols and amines, and because of this they serve as key intermediates in the development of a wide range of products.