• Title, Summary, Keyword: Mean PEL Quotient

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Distribution and Pollution Assessment of Heavy Metals in Surface Sediments Near Gwangan Bridge (광안대교 인근 퇴적토 중의 중금속 농도 및 오염도 조사 연구)

  • Lee, Junho;Yang, Changgeun;Lee, Taeyoon
    • Journal of the Korean GEO-environmental Society
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    • v.19 no.11
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    • pp.15-22
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    • 2018
  • The main objective of this study was to analyse heavy metals in sediments obtained from Gwangan bridge and to evaluate pollution intensity of the sites. To evaluate pollution intensity of the sites, we used enrichment factor (EF), geoaccumulation index, potential ecological risk factor (PERF), and mean PEL quotient. Pollution intensities of these sites were evaluated by above methods, and we found most dangerous heavy metal and polluted sites. All sites showed non polluted or low risk for the heavy metals such as Cr, Cu, Ni, Pb, and Zn, but all sites were categorized as minor enrichment for Cd. G4 was evaluated as moderately polluted by Cd ($I_{geo}$) but other sites were unpolluted by heavy metals. In summary, Cd was found to be higher concentrations for all sites. For G4 and G5 sites, Pb and Zn in addition to Cd were higher than other sites.

Evaluating Sediment Heavy Metal Pollution Level and Monitoring Network Representativeness at the Upstream Points of the Gangjeong-Goryeong Weir in the Nakdong River (낙동강 강정고령보 상류 퇴적물 측정망 지점의 중금속 오염도 및 대표성 평가)

  • Ahn, Jung Min;Im, Teo Hyo;Kim, Sungmin;Lee, Sangsu;Kim, Shin;Lee, Kwon Cheol;Kim, Yong Seok;Yang, Deuk Seok
    • Journal of Environmental Science International
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    • v.27 no.7
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    • pp.477-488
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    • 2018
  • In this study, heavy metal levels at the sediment monitoring network site upstream of the Gangjeong-Goryeong weir in the Nakdong River were surveyed from 2012 to 2016. We assessed the sediment pollution level using various pollution indexes based on ICP-MS analysis. The stream sediment pollution assessment standard, established through Regulation No. 687 of the National Institute of Environmental Research (2015), pollution load index (PLI), potential ecological risk index (RI), and mean PEL Quotient (mPELQ) were used to evaluate the sediment pollution level. We verified the representativeness of the monitoring point through the distribution of sedimentation and scour behavior by river bed surveying using anacousticDopplercurrentprofiler.

Distribution and Pollution Assessment of Trace Metals in Core Sediments from the Artificial Lake Shihwa, Korea (시화호 코어 퇴적물 내 미량금속 분포 특성 및 오염 평가)

  • Ra, Kongtae;Kim, Eun-Soo;Kim, Joung-Keun;Kim, Kyung-Tae;Lee, Jung-Moo;Kim, Eu-Yeol
    • Ocean and Polar Research
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    • v.35 no.2
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    • pp.69-83
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    • 2013
  • Metal concentrations in creek water, sewer outlets and core sediments were analyzed to identify the potential origin of metal pollution and to evaluate the extent of metal pollution and potential toxicity of Lake Shihwa. Mean concentrations for dissolved metals in creek water and sewer outlets were 1.6~136 times higher than those in the surface seawater of Lake Shihwa. Metal concentrations in creek water from an industrial region were also higher than those from municipal and agricultural regions, indicating that the potential source of metal pollution in the study area might be mainly due to industrial activities. The vertical profiles of metals in core sediments showed an increasing trend toward the upper sediments. Extremely higher concentrations of metals were observed in the vicinity of Banweol industrial complex. The results of a geo-accumulation index indicated that Cu, Zn and Cd were highly polluted. By comparing the sediment quality guidelines such as TEL and PEL, six metals such as Cr, Ni, Cu, Zn, Cd and Pb levels in core sediments nearby industrial complex exceeded the PEL value. Mean PEL quotient (mPELQ) was used to integrate the estimate of potential toxicity for measured metals in the present study. Mean PELQs in core sediments from Lake Shihwa ranged from 0.2~2.3, indicating that benthic organisms nearby the industrial complex may have been adversely affected.

Estimation of Heavy Metal Contamination Level in Masan Bay and Nakdong Estuary Sediments (마산만과 낙동강 하구역 해양 퇴적토의 중금속 오염도 산정 연구)

  • Lee, Junho;Yang, Changeun;Han, Kyongsoo;Lee, Taeyoon
    • Journal of the Korean GEO-environmental Society
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    • v.21 no.3
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    • pp.13-21
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    • 2020
  • The purpose of this study is to evaluate the concentrations of heavy metals in the marine sediments near the Masan bay and the Nakdong estuary, and to investigate the pollution intensity levels of six heavy metals using the existing pollution intensity assessment method. According to the US environmental protection agency, in the case of Cu, the B1 area was classified as severe pollution, while in Ni and Zn, it was classified as moderate pollution in some areas. According to the classification of Igeo, EF and PERF, the A and B regions were polluted by Cd. In particular, in the B1 region, Igeo, EF, and PERF values were the highest in all regions, and were regarded as serious pollution. According to the mean PEL quotient classification, which takes into account the effects of all six heavy metals, there is a 21% probability of toxicity from heavy metals in all regions. The highest concentration of Cd in the B1 region is 1.5 mg/kg. Therefore, the contamination of Cd contained in sediment near Masan Bay is serious, so it is necessary to clarify the cause and take careful approach to future treatment.

Potential Human Risk Assessment of PCBs and OCPs in Edible Fish Collected from the Offshore of Busan (부산 연근해의 해양오염퇴적물과 식용 어류 체내의 PCBs와 유기염소계 농약의 분포 및 잠재적인 인체 위해성평가)

  • Choi, Jin Young;Yang, Dong-Beom;Hong, Gi-Hoon;Kim, Suk Hyun;Chung, Chang Soo;Kim, Kyoung-Rean;Cho, Kyung Duk
    • Journal of Korean Society of Environmental Engineers
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    • v.34 no.12
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    • pp.810-820
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    • 2012
  • Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) contents in marine sediment and edible fish (4 species) from the estuary near the Yongho wharf in Busan were determined to assess their presence and their potential health risk to the local population through fish consumption was also assessed. Levels of ${\Sigma}PCBs$ and ${\Sigma}DDTs$ in marine sediment were 3.22~197.65 and 1.77~20.27 ng/g dw, respectively. HCHs and endosulfan sulfate concentrations in bottom sediment were 1.42~6.08, 0.56~13.89 ng/g dw, respectively. The bottom sediment in the offshore of the Yongho wharf may be characterized as semi-polluted status with potential adverse marine biological effects in terms of sediment quality guidelines of US NOAA. The mean concentrations of ${\Sigma}PCBs$ in the tissues of olive flounder (Paralichthys olivaceus), Korean rockfish (Sebastes schlegelii), file fish (Stephanolepis cirrhifer) and abbysal searobin (Lepidotrigla abyssalis) were 67.37, 10.20, 48.26, 22.81 ng/g lw, respectively. DDTs and HCHs were also detected in all fish samples. Lifetime cancer risk and target hazard quotient to local residents due to those fish consumption were found to pose negligible cancer and non-cancer risk.