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THE BUBBLE STRIPPING METHOD FOR DETERMINING DISSOLVED HYDROGEN (H2) IN WELL WATER
Citation:
McInnes, D. AND D H. Kampbell*. THE BUBBLE STRIPPING METHOD FOR DETERMINING DISSOLVED HYDROGEN (H2) IN WELL WATER. FIELD ANALYTICAL CHEMISTRY AND TECHNOLOGY 4(6):283-296, (2000).
Description:
The Bubble Strip Method was developed for determining concentrations of dissolved H2 in ground water (1). This information canaid in assessing the viability of employing the strategyof monitored natural attenuation (MNA) to restore sites contaminated with chlorinated hydrocarbons. The method wasa applied by pumping well water into a sample cell, and then injecting 20 mL of air to produce a head space. Well water was then pumped through the cell, causing dissolved H2 to partition between the two phases. The head space was then analyzed by gas chromatography, and [H2] in solution was calculated using Henry's law. Two sample cell designs were compared, the Microseeps Cell and the Chapelle Cell. Kinetics of equilibratiion studies were conducted with each cell, employing various various solution flow rates at both 4 degrees C and 21 degrees C. The Microseeps Cell compared favorably in this regard, with the added benefit of costing significantly less.