Dispersion of organic contaminants from wastewater treatment outfall in Masan Bay, Korea

Kannan, Narayanan; Hong, Sang Hee; Yim, Un Hyuk; Kim, Nam Sook; Ha, Sung Yong; Li, Donghao; Shim, Won Joon

doi:10.1007/bf03216506

Cited by 7 publications

(4 citation statements)

References 28 publications

(50 reference statements)

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“…1). Many studies have been conducted to identify organic pollutants from STPs (Kannan et al, 2010;Lee et al, 2011). In our study, however, station M7-1 samples did not have different DOM characteristics but rather had the following features:…”

Section: Origin Of Excess Dommentioning

confidence: 74%

Tracing terrestrial versus marine sources of dissolved organic carbon in a coastal bay using stable carbon isotopes

Lee

Kim

2020

Biogeosciences

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Abstract. The sources of dissolved organic matter (DOM) in coastal waters are diverse, and they play different roles in the biogeochemistry and ecosystems of the ocean. In this study, we measured dissolved organic carbon (DOC) and nitrogen (DON), the stable carbon isotopic composition of dissolved organic carbon (δ13C-DOC), and fluorescent dissolved organic matter (FDOM) in coastal bay waters surrounded by large cities (Masan Bay, Republic of Korea) to determine the different DOM sources in this region. The surface seawater samples were collected in two sampling campaigns (August 2011 and August 2016). The salinities were in the range of 10–21 in 2011 and 25–32 in 2016. In 2011, excess DOC was observed in high-salinity (16–21) waters; the excess DOC source was found to be mainly from marine autochthonous production according to the δ13C-DOC values (−23.7 ‰ to −20.6 ‰), the higher concentrations of protein-like FDOM, and the lower DOC∕DON (C∕N) ratios (8–15). In contrast, excess DOC observed in high-salinity waters in 2016 was characterized by low FDOM, more depleted δ13C values (−28.8 ‰ to −21.1 ‰), and high C∕N ratios (13–45), suggesting that the source of excess DOC is terrestrial C3 plants by direct land–seawater interactions. Our results show that multiple DOM tracers such as δ13C-DOC, FDOM, and C∕N ratios are powerful for determining different sources of DOM occurring in coastal waters.

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Section: Origin Of Excess Dommentioning

confidence: 74%

Tracing terrestrial versus marine sources of dissolved organic carbon in a coastal bay using stable carbon isotopes

Lee

Kim

2020

Biogeosciences

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“…Immediately after collection, samples were frozen on dry ice, then transferred to the laboratory and stored at -20°C until analysis. The analytical procedure for organochlorines and polyaromatic hydrocarbons are described in Hong et al (2003Hong et al ( , 2009Hong et al ( , 2010, Kannan et al (2007Kannan et al ( , 2010 and Yim et al (2005). The analytical procedure for butyltins is described in Shim et al (1999) and Kim et al (2011Kim et al ( , 2002.…”

Section: Methodsmentioning

confidence: 99%

Multiple In Vitro Bioassay Approach in Sediment Toxicity Evaluation: Masan Bay, Korea

Jung

Hong

Yim

et al. 2012

Bull Environ Contam Toxicol

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Extracts of 21 sediment samples from Masan Bay, Korea, used in an earlier chemical measurement, were screened for their ability to induce estrogen, - and dioxin - like gene expression using the E-Assay (+), DR-CALUX assay, respectively, and to inhibit acetylcholinesterase (AChE) activity using an in vitro AChE assay. Biological impact in the industry-rich inner bay is higher than outer bay. DDTs (0.65), coplanar PCBs (0.77), HCHs (0.64), PAHs (0.61) and APs (0.53) with good correlation to E-assay (+) are seen as environmental estrogens. The highest induction of DR-CALUX response was seen again at station M12 and 15 which received sewage effluents. PCDD/DFs gave the highest correlation (0.75). Interestingly, the M12 station at the sewage treatment outlet showed the highest activity. Among the targeted chemicals APs (0.66), PCBs (0.64), PAHs (0.61) and DDT (0.49) correlated well with the AChE bioassay. Spearman rank correlation on analytical and biochemical results affirmed the 'hot spots' and point sources (e.g., sewage treatment and industrial outfall) and suspected toxicants. Significant correlations between organo chlorine pesticides, PCBs, dioxins and alkylphenols and their biological effects were observed.

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“…Thus, the relatively high portion of MBT and DBT to »BT in the effluents is a result of both direct input as well as degradation of TBT during sewage treatment process. In our previous study, spatial distribution of three butyltin concentrations in surface sediments showed a negative gradient from the D-STP outfall underwater diffuser site to the outer transect of sampling sites 29 . Butyltin residues detected in the final effluent of D-STP in this study confirm the importance of D-STP as an input source of MBT and DBT and to a lesser extent of TBT.…”

Section: Butyltins In Two Stp Effluentsmentioning

confidence: 98%

Status and trend of butyltin contamination in Masan Bay, Korea

Kim

et al. 2011

Toxicol. Environ. Health Sci.

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The current status and historical trend of butyltin contamination in Masan Bay was evaluated using water, sewage effluents, surface sediments and sediment cores. Samples were taken during 2004-2005, after the introduction of TBT regulation in Korea. The levels were at nd-2.4 ng Sn/L for TBT and nd-6.4 ng Sn/L for »BT in seawater, and 6-165 ng Sn/g dw (TBT) and 11-329 ng Sn/g dw (»BT) in surface sediments from Masan Bay. Three butyltins were detected in STP effluent which acts like an additional source of butyltin to the bay. Butyltin contamination in sediment has apparently increased in the inner part of the bay in the past two decades. Regulation was effective in reducing TBT pollution in seawater, but not effective enough for sediments. Hence, it is important to monitor TBT in sediments.

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Dispersion of organic contaminants from wastewater treatment outfall in Masan Bay, Korea

Cited by 7 publications

References 28 publications

Tracing terrestrial versus marine sources of dissolved organic carbon in a coastal bay using stable carbon isotopes

Tracing terrestrial versus marine sources of dissolved organic carbon in a coastal bay using stable carbon isotopes

Multiple In Vitro Bioassay Approach in Sediment Toxicity Evaluation: Masan Bay, Korea

Status and trend of butyltin contamination in Masan Bay, Korea

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