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Dynamic column breakthrough curves for N2 on 249 mg of 13X zeolite exposed to 1.00 % N2 in He at 500 cm3 · min−1 (IUPAC STP) at 298.1 K and mean total pressure 1104.3 hPa; shown are the MS (m/z) 28 signals (see text) obtained for the sorbent (blue solid curve) and blank (black dashed curve) runs.
