Mercury Determination for Biomass Sample Preparation Boats should be pre-baked at 550°C for an hour or analyzed (without a sample) before loading a sample Samples may be analyzed as air dried Crush and grind to make the sample size <0.2mm Instrument 5E-HGT2320 Automatic Mercury Analyzer Instrument Settings Oxygen : Flow 300ml/min; purity >99.9% Pressure :0.1 Mpa Main Furnace Drying Temp.: 300°C Time: 90s Combustion Temp.: 800C Time: 180s Catalyst Furnace Temp.: 600C Purge Time: 60s Nominal Sample Mass: 50mg~70mg Analysis Time: 6 minutes/per test

Calibration Standard Standard Mercury Solution or equivalent Certified Reference Materials. Method Approval GB 16659-2008 / ASTM D6722-11 Procedure 1. Prepare instrument as outlined in the operator’s instruction manual, (check the Inlet pressure, Outlet2 pressure, Furnace temperature, Catalytic tube temperature and Voltage.) 2. Keep the instrument in “prepare” state for at least half an hour 3. Do three blank samples test to reduce the blank level; (if the blank LC_peak is higher than 0.001, more blank sample is suggested) 4. Weigh one standard sample (60mg) in nickel boat, input the sample weight...

8. Repetition of point 6 to point 8 until all samples are processed Note: Do Calibrating refer to operator' s instruction manual for details. Typical Results