简介:2.1 The sample is introduced into a sample flask which is then attached to the apparatus
(Figure 1). The sample chamber pressure is reduced using a vacuum pump and remains at
approximately 10 torr (vapor pressure of wa简介:2.1 The sample is introduced into a sample flask which is then attached to the apparatus
(Figure 1). The sample chamber pressure is reduced using a vacuum pump and remains at
approximately 10 torr (vapor pressure of water) as water is removed from the sample. The vapor
is passed over a condenser coil chilled to a temperature of -10 C or less, which results in the o
condensation of water vapor. The uncondensed distillate is cryogenically trapped on a section of
1/8 inch stainless steel tubing chilled to the temperature of liquid nitrogen (-196 C). After an o
appropriate distillation period which may vary due to matrix or analyte group, the condensate详细>