H 2 S Microsensor - Unisense

Chemical Interferences
Name Formula Interference for gases in gas phase (%) Interference for gases dissolved in water (%)
Name Methane Formula CH4 Interference for gases in gas phase (%) 0* Interference for gases dissolved in water (%) 0**
Name Carbon dioxide Formula CO2 Interference for gases in gas phase (%) 0 Interference for gases dissolved in water (%) 0
Name Nitrogen Formula N2 Interference for gases in gas phase (%) 0 Interference for gases dissolved in water (%) 0
Name Oxygen Formula O2 Interference for gases in gas phase (%) 0 Interference for gases dissolved in water (%) 0
Name Air Formula O2, N2, Ar Interference for gases in gas phase (%) 0 Interference for gases dissolved in water (%) 0
Name Nitrous oxide Formula N2O Interference for gases in gas phase (%) 0 Interference for gases dissolved in water (%) 0
Name Ammonia Formula NH3 Interference for gases in gas phase (%) 0 Interference for gases dissolved in water (%) 0
Name Hydrogen Formula H2 Interference for gases in gas phase (%) 0.8 Interference for gases dissolved in water (%) 96
Name Carbon monoxide Formula CO Interference for gases in gas phase (%) 0.6 Interference for gases dissolved in water (%) 77
Name Dimethyl sulfide Formula (CH3)2S Interference for gases in gas phase (%) 18 Interference for gases dissolved in water (%) 18
Name Methyl mercaptan Formula CH3SH Interference for gases in gas phase (%) 174 Interference for gases dissolved in water (%) 44
Name Ethyl mercaptan Formula C2H6S Interference for gases in gas phase (%) 13 Interference for gases dissolved in water (%) 14
Name Sulfur dioxide Formula SO2 Interference for gases in gas phase (%) 40 Interference for gases dissolved in water (%) 1

*Given as signal for the interfering species in % of H₂S signal at equal partial pressures

**Given as signal for the interfering species in % of H₂S signal at equal molar concentrations

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