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|Type of Document
||Studies on the Concentration of Singlet Oxygen and Environment Factors in Kaoshiung Harbor and Coastal Area|
|Date of Defense
Dissolved organic matters are important photosensitizer for the photochemical reactions in natural water. In this study, the photochemical reactions sensitized by seawater were collected from Kaoshiung harbor and coastal areas. The steady-state concentrations of singlet oxygen [1O2]ss were determined by using furfuryl alcohol as a trapping agent. PNAP-PYR actinometer were used to measure the integrated intensity incident on the sample during sunlight irradiation. The objectives of this study are :
（1） Measure the mean [1O2]ss of seawater in the Kaoshiung sea area.
（2） Test the correlation between TOC and [1O2]ss
（3） Test the correlation between UV-VIS A370 and [1O2]ss
（4） Test the correlation between fluorescence and [1O2]ss
According to the experimental results, we have found that sunlight of different seasons have quite an influence to [1O2]ss. Dissolved organic matters play an important role in photochemical reactions in natural waters although the results show non-significant correlation between dissolved organic matters and [1O2]ss. Then we use SPSS to calculate the correlation of [1O2]ss and TOC、UV-VIS A370、fluorescence. Only UV-VIS A370 and [1O2]ss is apparently correlated （P＜0.05）. We suggest that [1O2]ss can be estimated via the following equation [1O2]ss×1015 ＝ 11.81A370＋6.49. On November 2000, the mean [1O2]ss of seawater observed in Da-Lin-Pu outfall area and Tso-Ying outfall area are 6.91 × 10-16 M and 2.13 × 10-16 M respectively.
||Jyh-horng Sheu - chair|
Jung-Hui Chen - co-chair
Wei-Hsien Wang - advisor
indicate in-campus access immediately and off_campus access in a year|
|Date of Submission