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Two samplers for monitoring dissolved gases in lake water and sediments
Author(s) -
Rudd John W. M.,
Hamilton R. D.
Publication year - 1975
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1975.20.5.0902
Subject(s) - sediment , sampling (signal processing) , water column , environmental science , contamination , hydrology (agriculture) , sediment–water interface , pore water pressure , environmental chemistry , geology , chemistry , geomorphology , oceanography , geotechnical engineering , ecology , filter (signal processing) , computer science , computer vision , biology
An in situ vertical point sampler was used over several months to obtain dissolved gas samples from precise and reproducible points in the water column of a stratified lake. Sampling error of the apparatus was negligible. A sediment gas sampler monitors concentrations by equilibration of dissolved pore wa ter gases with water inside plastic sample tubing, eliminating the problems of degassing and air contamination inherent to other sediment sampling systems. It is simple to construct and operate, enables close interval sampling across the sediment‐water interface and causes minimal disturbance of sediments and concentration gradients.