1. Anhydrosugars in Biomass Smoke Preliminary Data from FLAME 2006
Guenter Engling
Research Center for Environmental Changes
Academia Sinica
Taipei, Taiwan

2. Cellulose Degradation
Levoglucosan
assumed to be sufficiently stable in atmosphere
-> longer life time
highest conc. of all wood smoke compounds

3. ANALYSIS SCHEME Quartz Filters Aqueous Extraction Filtration
Analysis by HPAEC-PAD
Carbon Analysis
by Sunset (TOT) Method
PM Collectors:
- PM2.5 Hi-vol Sampler (1130 L/min.)
- Multi-stage Hi-vol Samplers (6-stage cascade impactor)
- URG nylon + Teflon filters
Gas Collectors: URG denuders (acid + basic gas-phase species)

4. Advantages: HPAEC-PAD Method
High Performance Anion Exchange Chromatography (HPAEC)
Ion chromatographic (IC) separation
Basic eluent (NaOH) converts anhydrosugars to their anionic form
Electrochemical Detection: Pulsed Amperometry (PAD)
Application of specific electric potential (voltage) to induce oxidation
Measurement of current generated by the released electrons
Advantages:
Filter extraction with water
No chemical derivatization
Highly selective and sensitive
Wide dynamic range

5. Anhydrosugar Emission Factors Chamber Burns

6. Anhydrosugar Emission Factors Stack Burns

7. Correlation of Levoglucosan with EC Chamber Burns

8. Correlation of Levoglucosan with EC Stack Burns

9. Anhydrosugar Emission Factors Rice Straw

10. Ambient Anhydrosugar Concentrations
Event: Rice Field Burning
Time: December 2006
Location: Yunlin County, Taiwan
- OM/OC Conversion Factor: 1.8 based on reconstructed mass
- Turpin: for wood smoke impacted aerosol: (aged?!?)

11. Ambient Levoglucosan Concentrations PM2.5/PM10 Ratios
Event: Rice Field Burning
Time: December 2006
Location: Yunlin County, Taiwan
- OM/OC Conversion Factor: 1.8 based on reconstructed mass
- Turpin: for wood smoke impacted aerosol: (aged?!?)

12. Ambient Levoglucosan Concentrations PM2.5/TSP Ratios
Event: Rice Field Burning
Time: December 2006
Location: Yunlin County, Taiwan
- OM/OC Conversion Factor: 1.8 based on reconstructed mass
- Turpin: for wood smoke impacted aerosol: (aged?!?)