Heavy Metals in Surface Sediments from Doam Bay, Southwestern Coast of Korea

Abstract

Forty-four surface sediments from Doam Bay were analyzed for total organic carbon (TOC), total nitrogen (TN), total metal (Al, Fe, Mn, Cr, Cu, Ni, Pb, Zn) and further chemical partitioning of metals were carried out in some samples. The TOC (0.32~3.10%) and TN (0.03~0.26%) values of the samples were similar to those of other coastal area. The C/N ratios ranged from 7.9 to 11.9 with an average 9.3 which revealed that contribution of terrestrial organic matters was relatively rare. Contents of analysed metals showed a level lower than threshold effects level (TEL) in sediment quality guidelines. Based on the chemical speciation of metals, the lattice fractions were found in the order Cr > Cu > Ni > Zn > Pb > Mn, while Mn and Pb are the ratio of the non-lattice fractions accounted for more than 50%. The average baseline values were obtained relative cumulative frequency curves and linear regression analysis. The respective baseline concentrations for Cu, Ni, Pb, Zn, Cr and Mn were 11.8, 23.1, 26.8, 76.6, 56.7, 585 mg/kg, respectively. Based on geoaccumulation index (I geo ) with a baseline values of Mn showed that face the contamination phase from estuarine stations. However, in case of Zn and Pb, although there is no sign of contamination, it could be release from sediment when there is a change in the environment, which is caused from the high ratio of non-lattice fractions.

Evaluation of Pollution Level for Organic Matter and Trace Metals in Sediments around Taehwa River Estuary, Ulsan

“…3에 나타내었 다. 각 미량금속별 농도는 Fe 0.91-3.56% (평균 2.56±0.61%), Cu 7.7-69.7 mg/kg (평균 38.1±20.5 mg/kg), Cd 0.07-0.60 mg/kg (평균 0.29±0.16 mg/kg), Pb 14.4-42.3 mg/kg (평균 28.1±8.1 mg/kg), Cr 9.2-55.8 mg/kg (평균 43.3±12.2 mg/ kg), Mn 298-1,582 mg/kg (평균 626±330 mg/kg), As 2.5-19.3 mg/kg (평균 10.2±4.7 mg/kg), Zn 48-254 mg/kg (평균 157±58 mg/kg), Hg 0.004-0.134 mg/kg (평균 0.059±0.041 mg/kg) (Kim et al, 1998;Cho et al, 1999)이나, 반폐쇄적인 내만 (Hyun et al, 2003;Lee et al, 2004;Kim et al, 2012), 갯벌(Kim et al, 2008;Hwang et al, 2013b), 하구역 (Cho and Park, 1998;Hwang et al, 2013a Table 3. Classification of enrichment factor (EF; Birth, 2003) and geoaccumulation index (I geo ; Müller, 1981) (Zhang and Liu, 2002;Hyun et al, 2007), 최근 Birth (2003) 는 이들 EF 값을 7 단계로 좀더 세분화여 퇴적물에 대한 미량 금속 오염 평가기준을 제시하였고(Table 3).…”

Evaluation of Organic Matter and Trace Metal Contamination in Surface Sediments around the Geum River Estuary using Sediment Quality Guidelines

“…4). (Cho and Park, 1998;Cho et al, 2001;Hwang et al, 2010), Choi et al (1996) , Pb . , , (Chon et al, 2009).…”

Evaluation of Organic Matter and Trace Metal Contaminations of Intertidal Sediments from Coastal Islands in the Southern Region of Jeollanam Province

“…, Yoon (2000) . , , , (Cho and Park, 1998;Choi et al, 1999;Cho et al, 2001;Shin et al, 2002;Hwang et al, 2010).…”