Back to Search
Start Over
Chromophoric Dissolved Organic Matter as a Tracer of Fecal Contamination for Bathing Water Quality Monitoring in the Northern Tyrrhenian Sea (Latium, Italy)
- Source :
- Journal of Marine Science and Engineering, Vol 8, Iss 430, p 430 (2020), Journal of marine science and engineering 8 (2020): 1–17. doi:10.3390/jmse8060430, info:cnr-pdr/source/autori:Madonia A., Caruso G., Piazzolla D., Bonamano S., Piermattei V., Zappalà G., Marcelli M./titolo:Chromophoric Dissolved Organic Matter as a tracer of fecal contamination for bathing water quality monitoring in the Northern Tyrrhenian Sea/doi:10.3390%2Fjmse8060430/rivista:Journal of marine science and engineering/anno:2020/pagina_da:1/pagina_a:17/intervallo_pagine:1–17/volume:8, Journal of Marine Science and Engineering, Volume 8, Issue 6
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- Dissolved organic matter present in natural aquatic environments is a heterogeneous mixture of allochthonous and autochthonous materials. In coastal areas vulnerable to sewage waste, its biologically active component, the chromophoric dissolved organic matter (CDOM), is expected to change its composition and distribution in relation to anthropogenic activities, suggesting the possible use of CDOM as a proxy of fecal contamination. This study aimed at testing such hypothesis by investigating and relating the optical properties of CDOM with Escherichia coli abundance, physiological state, and enzymatic activities in a bathing area of the Northern Tyrrhenian Sea (Latium, Italy) affected by urban wastewaters. The parallel factor analysis (PARAFAC) applied to the excitation&ndash<br />emission matrices (EEMs) of CDOM allowed us to distinguish three main components: C1 (&lambda<br />Ex/&lambda<br />Em = 342 nm/435 nm), C2 (&lambda<br />Em = 281&ndash<br />373 nm/460 nm), and C3 (&lambda<br />Em = 286 nm/360 nm). C1 and C2 corresponded to humic acids of terrestrial origin, while C3 to tryptophan, whose fluorescence peak was detected close to sewage sites, strongly related to active E. coli cells. The comparison between spectral and microbiological methods is suggested as a suitable approach to monitor bathing water quality for the implementation of coastal observing system capability.
- Subjects :
- 010504 meteorology & atmospheric sciences
Sewage
bathing waters, enzyme activities, coastal observing systems
Ocean Engineering
010501 environmental sciences
01 natural sciences
Bathing water quality
lcsh:Oceanography
lcsh:VM1-989
TRACER
coastal observing systems
Dissolved organic carbon
Escherichia coli
lcsh:GC1-1581
0105 earth and related environmental sciences
Water Science and Technology
Civil and Structural Engineering
business.industry
Aquatic ecosystem
lcsh:Naval architecture. Shipbuilding. Marine engineering
Fecal coliform
Colored dissolved organic matter
enzyme activities
Environmental chemistry
fecal contamination
Environmental science
CDOM
business
bathing waters
Subjects
Details
- Language :
- English
- ISSN :
- 20771312
- Volume :
- 8
- Issue :
- 430
- Database :
- OpenAIRE
- Journal :
- Journal of Marine Science and Engineering
- Accession number :
- edsair.doi.dedup.....48a5e1c3551947716d86e36b60625db5