CALIDAD DE INFORMACIÓN Y DETECCIÓN DE LOS DISPOSITIVOS PRESENTES EN CÁMARAS ESTÁTICAS PARA COLECTAR GASES TRAZA EN SUELOS DE HUMEDAL

Resumen

The aim of the present study was to explore in the field the effect of laboratory devices and static chambers to obtain trace gas information during the measurement of flows. The gases were collected from two wetlands of Lake Patzcuaro, Michoacan. Gas samples were collected in vial glasses using static chambers and their results showed statistically acceptable values of the gas capture system. The chromatograph showed a strong correlation between the observed values and the expected ones. The working protocol was efficient to prevent noise from the water’s entrance in the gas detector. Statistical evidence suggests the possibility of reducing the number of samples in the estimated flow without modifying significantly the results. The pressurization effect was minimized by replacing the initial concentration (C1), for the atmospheric concentration that had been measured outside the chamber. There are important differences when estimating the flow models of linear, quadratic and Hutchinson-Mosier. Finally, a great degree of underestimation of the gas flow was found using a linear regression (52.3%) respected to a quadratic regression (33.8%) and contrasting it against the theoretical values of a flow model.