Vorrichtung zum Handhabung von Flüssigkeiten für analytische Zwecke

摘要

A device for handling flowing liquids for analytical purposes contains a high-pressure pump (12) for conveying the liquid, a cavity (28) connected to a high-pressure pump outlet (10), a heating device for heating the cavity (28) and a choke device (30) which is arranged downstream of the cavity (28) and which is dimensioned relative to the conveying capacity of the high-pressure pump (12) so that in the cavity (28) it maintains a pressure which is substantially higher than atmospheric pressure. The cavity (28) can be formed by a tube which is directly or indirectly connected at one end to the high-pressure pump (28) and at the other end to the choke device (30). The pressure in the cavity (28) is higher than the saturated steam pressure of the liquid. Such an arrangement can be used for introducing samples in spectroscopy. The liquid is a sample liquid which, forming an aerosol, emerges from the choke device (30) which takes the form of a nozzle. The arrangement can also be used for solubilizing liquid samples, the liquid being formed by a sample liquid mixed with a solubilizer.