Title page for etd-0309117-233135


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URN etd-0309117-233135
Author Ting-Chi Yang
Author's Email Address No Public.
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Department Marine Biotechnology and Resources
Year 2016
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Establishment of analytical methods for emerging contaminants in seawaters and sediments using high-performance liquid chromatography tandem-mass spectrometry and applications to the distribution study in the coastal areas of Hengchun Peninsula
Date of Defense 2017-06-08
Page Count 173
Keyword
  • Hengchun Peninsula
  • Detergent
  • Preservative
  • LC-MS/MS
  • Liquid-liquid microextraction
  • Sunscreen
  • Emerging contaminant
  • Abstract In view of the trend of green chemistry, environmental friendly rapid and stable pretreatments and high-performance liquid chromatography tandem-mass spectrometry (HPLC-MS/MS) procedures were established in this study for emerging contaminants, such as: sunscreens, preservatives and detergents. Water samples were pretreated with liquid-liquid microextraction, 500 mL sample was extracted with 1 mL of n-octanol. The extract was then diluted 1:4 with methanol. For sediments, 1 g of freeze-dried sample was extracted with 2 mL of methanol. Both water and sediment extracts were filtered prior to HPLC-MS/MS analyses. A total of 6 sunscreens, 5 preservatives and 24 detergent analogues were tested. The recovery percentages ranged from 76.96 to 119.6. The correlation coefficients of the calibration curve ranged between 0.9895-0.9999. The detection limits were satisfactory for both water and sediment samples. The analytical methods were used to study pollution in coastal areas of Hengchun Peninsula. Water samples from 12 stations and sediments from 7 stations were collected in July and December, 2016. The concentration of sunscreens, preservatives and detergents in water samples ranged from 12.1 to 1242 ng/L, 4.85 to 167 ng/L and 17.7 to 946 ng/L, respectively. Only sunscreen BP-3 and detergent NP were found in sediments with the amounts spanned n.d.-17.5 ng/g and 20.9-145 ng/g. The hightest concentration of sunscreens was observed in Wanlitong, and it is suggested that the possible negative impact on the coral reef ecosystem in that area should be carefully monitored. The contaminations of preservatives and detegents were relatively slight. However, the long-term effects of these exogenous pollutants should be evaluated since many of them may interfere with the reproductive endocrine system of marine organisms.
    Advisory Committee
  • Hsu-Ming Chung - chair
  • Chi-Hsin Hsu - co-chair
  • Wei-Hsien Wang - advisor
  • Files
  • etd-0309117-233135.pdf
  • Indicate in-campus at 2 year and off-campus access at 2 year.
    Date of Submission 2017-06-23

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