Sampling technique for the determination of dissolved methane in soil solution

A sampling technique was developed to sample floodwater and soil solution from wetland ricefields for the determination of dissolved CH sub(4). The method was compared with the soil core method used in the measurement of entrapped CH sub(4). This was done to assess if dissolved CH sub(4) determinati...

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Published inChemosphere. Global change science Vol. 2; no. 1; pp. 57 - 63
Main Authors Alberto, M.C.R., Arah, J.R.M., Neue, H U, Wassmann, R, Lantin, R S, Aduna, J B, Bronson, K F
Format Journal Article
LanguageEnglish
Published 01.01.2000
Subjects
Destructive testing
Dissolution
Dynamics
Floodwaters
Sampling
Variability
Wetlands
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Summary:A sampling technique was developed to sample floodwater and soil solution from wetland ricefields for the determination of dissolved CH sub(4). The method was compared with the soil core method used in the measurement of entrapped CH sub(4). This was done to assess if dissolved CH sub(4) determination could be an alternative to soil-entrapped CH sub(4) measurements since the latter is time-consuming, laborious and destructive in nature. The dynamics of both dissolved CH sub(4) and entrapped CH sub(4) follow the same seasonal pattern. They have the same degree of spatial and temporal variability. However, the sampling procedure developed for the determination of dissolved CH sub(4) is relatively simple, easy and convenient compared to that for soil-entrapped CH sub(4) measurements. It also allows in-situ solution sampling at different soil depths. Therefore, it is recommended that dissolved CH sub(4) measurements can be an alternative to soil-entrapped CH sub(4) determinations.
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ISSN:1465-9972
DOI:10.1016/S1465-9972(99)00044-6