악취 Sampling Bag의 황 화합물질 안정성 연구

In this study, stability of 4 sulfur compounds (H2S, CH3SH, DMS, and DMDS) was investigated for up to 96 h (at 6, 12, 24, 48, 72, and 96 h time points). For these experiments, each sulfur standard was prepared at 10 nmol/mol in a 10 L sampling bag (Teldlar bag). To investigate the stability of the sulfur compounds, regression analysis was applied to the data obtained by the concentration reduction over time at the 95% confidence level. According to regression analysis, the concentration of sulfur compounds in 48 h had statistically significant difference (P-value < 0.05) from stability of 4 sulfur compounds (H2S, CH3SH, DMS, and DMDS). The results also indicated that the heavy sulfur compounds (DMS and DMDS) tend to show more rapid concentration reduction than lighter sulfur compounds (H2S and CH3SH). This study can be used to improve the reliability of analysis by judging quantitative concentrations of sulfur compounds when controlling odor-polluted areas.