Author(s)

Anna Scrugli

Abstract

A prototype of a thermoelectric cold trap system has been designed, built and evaluated. The unit is used to preconcentrate trace atmospheric compounds prior to analysis. The thermoelectric cold trap unit provides an alternative to the liquid nitrogen cooled traps normally used as a means to preconcentrate sampled components. The thermoelectric system is especially applicable in field monitoring programs, where logistical burdens are often encountered when supplying large amounts of liquid cryogens. Likewise, one does not have to be concerned with the expense and downtime associated with the use of liquid cryogens. The thermoelectric

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