Patent ID: 7392689
Filing Date: 2008-07-01
Classification: G01N

Abstract:
1. A sample collection apparatus for analysis of air pollution, the apparatus comprising: a pretreatment unit arranged in front of a sample collection section to remove moisture; a first Peltier trap positioned at a lower side of the pretreatment unit to perform cooling condensation and thermal desorption; a switching valve connected to the pretreatment unit to form at least one flow path between at least two of first, second, third and fourth ports; the sample collection section connected to the switching valve to collect samples; a second Peltier trap positioned at a lower side of the sample collection section to perform thermal desorption; a first air pump connected to the second port of the switching valve to intake air; a second air pump connected to the sample collection section to intake and exhaust air; and a sample analyzer connected to the fourth port of the switching valve to analyze the samples.