Apparatus for automatically generating and measuring gaseous measuring samples from a series of liquid samples

摘要

Gaseous measuring samples like element hydrides are generated from liquid samples by reacting the same with reducing reagents in a reactor. In the reactor a countercurrent of inert gas strips the volatile reduction products from the reactor to convey the products to the measuring cell of an analytical measuring instrument. Various embodiments of the apparatus automatically controlling the supply of liquid sample and reagents to the reactor are disclosed such as mechanically or pneumatically controlled pumps. In each measuring cycle the reactor and respective components are washed to prevent contamination of succeeding samples; also, analytical determination of blank values as well as reference values can be included in each measuring cycle.