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Natural gas. Determination of composition with defined uncertainty by gas chromatography. Part 6. Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns— 21 стр.
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Stationary source emissions -- Sampling for the automated determination of gas emission concentrations for permanently installed monitoring systems— 32 стр.
Stationary source emissions; determination of the mass concentration of sulfur dioxide; performance characteristics of automated measuring methods— 16 стр.
Stationary source emissions - Determination of the mass concentration of nitrogen oxides - Performance characteristics of automated measuring systems— 23 стр.