The quantity of 15N-labeled contaminants detected relative to 15N2 additions.
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The µmoles of 15N contaminants (NO3−+NO2−, NH4+, and N2O) detected per mole of 15N2 gas from lecture bottles provided by different suppliers. N/A = not available; n.d. = not detected.*Not explicitly tested in high sensitivity 15N2 dilutions.†Moles of 15N2 estimated from the injection volume rather than direct measurements.§46N2O measured directly.The quantity of 15N-labeled contaminants detected relative to 15N2 additions.
创建时间：
2015-12-02
