The sample gases are carried in a nitrogen gas flow through a column filled with zeolite minerals, seen here as six foot stainless steel tube coiled in two loops inside the instrument.  The gases have different molecular sizes, so the smallest gases pass through the microscopic pores in the zeolite more quickly than larger gases.  This separates the gases and allows detection of each individual gas species at the end of the column.

The sample gases are carried in a nitrogen gas flow through a column filled with zeolite minerals, seen here as six foot stainless steel tube coiled in two loops inside the instrument. The gases have different molecular sizes, so the smallest gases pass through the microscopic pores in the zeolite more quickly than larger gases. This separates the gases and allows detection of each individual gas species at the end of the column. Image courtesy of NOAA Okeanos Explorer Program, MCR Expedition 2011.

Download high-resolution image (jpg, 2.764 Mb)

 

Related Links

Mid-Cayman Rise Expedition 2011: A Little Burp in a Big Ocean

Okeanos Explorer: Mid-Cayman Rise Expedition 2011

NOAA ship Okeanos Explorer

NOAA Ocean Explorer Gallery