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Impact of aquaculture on distribution of dissolved organic matter in coastal Jeju Island, Korea, based on absorption and fluorescence spectroscopy
Impact of aquaculture on distribution of dissolved organic matter in coastal Jeju Island, Korea, based on absorption and fluorescence spectroscopy
- Source :
- Environmental Science and Pollution Research International
- Publication Year :
- 2021
- Publisher :
- Springer Berlin Heidelberg, 2021.
-
Abstract
- In Jeju Island, multiple land-based aquafarms were fully operational along most coastal region. However, the effect of effluent on distribution and behaviours of dissolved organic matter (DOM) in the coastal water are still unknown. To decipher characteristics of organic pollution, we compared physicochemical parameters with spectral optical properties near the coastal aquafarms in Jeju Island. Absorption spectra were measured to calculate the absorption coefficient, spectral slope coefficient, and specific UV absorbance. Fluorescent DOM was analysed using fluorescence spectroscopy coupled with parallel factor analysis. Dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) were measured using high-temperature catalytic oxidation. The DOC concentration near the discharge outlet was twice higher than that in natural groundwater, and the TDN concentration exponentially increased close to the outlet. These distribution patterns indicate that aquafarms are a significant source of DOM. Herein, principal component analysis was applied to categorise the DOM origins. There were two distinct groups, namely, aquaculture activity for TDN with humic-like and high molecular weights DOM (PC1: 48.1%) and natural biological activity in the coastal water for DOC enrichment and protein-like DOM (PC2: 18.8%). We conclude that the aquafarms significantly discharge organic nitrogen pollutants and provoke in situ production of organic carbon. Furthermore, these findings indicate the potential of optical techniques for the efficient monitoring of anthropogenic organic pollutants from aquafarms worldwide.
- Subjects :
- Pollution
010504 meteorology & atmospheric sciences
Nitrogen
Health, Toxicology and Mutagenesis
media_common.quotation_subject
0208 environmental biotechnology
chemistry.chemical_element
02 engineering and technology
Aquaculture
01 natural sciences
PARAFAC
Rivers
Chromophoric dissolved organic matter
Dissolved organic carbon
Spectral slope
Environmental Chemistry
Dissolved organic matter
Effluent
Humic Substances
0105 earth and related environmental sciences
media_common
Total organic carbon
Pollutant
General Medicine
020801 environmental engineering
Spectrometry, Fluorescence
chemistry
Anthropogenic organic pollution
Environmental chemistry
Fluorescence excitation-emission matrix (EEM) spectroscopy
Environmental science
Groundwater
Research Article
Subjects
Details
- Language :
- English
- ISSN :
- 16147499 and 09441344
- Volume :
- 29
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Environmental Science and Pollution Research International
- Accession number :
- edsair.doi.dedup.....0ffbcd92b4d86356b23dbcd815ac0b50