This document describes how to use the Varian Saturn GC/MS to determine sulfur gases in the emissions from a pulp mill.
This document details the analysis of sulfur gases, specifically hydrogen sulfide, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide, in emissions from a Kraft pulp mill. The procedure involves collecting source samples in Tedlar bags and analyzing them using a Varian Saturn Ion Trap GC/MS (now Agilent). The analysis utilizes a special SPB-1 Sulfur column and specific mass spectrometer settings to detect these compounds at parts per million levels.
| Column | SPB-1 (Sulfur column) 60M x 0.32 mm, 4u film |
|---|---|
| Flow rate | 4 mL/min He |
| Column oven temperature | 40°C/3 min, 10°C/min to 140°C/hold |
| Valve oven temperature | 260°C |
| Injector temperature | 170°C, isothermal |
| Mass Range | 33-150 miz |
| Scan Rate | 2isec |
| Mass Spectrometer Temperature | 260°C |
| AM voltage | 3.8V |
A Varian Saturn Ion Trap GC/MS is used for the analysis.
The quantitation ions selected were m/z 34, 47, 62, 94 respectively.