지화학적 평가기법을 이용한 전남 서해 도서갯벌 퇴적물내 중금속 오염도 평가

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황동운;김성길
Hwang, Dong-Woon;Kim, Seong-Gil

  • 투고 : 2011.08.16
  • 심사 : 2011.12.09
  • 발행 : 2011.12.30

초록

We measured grain size, organic matter, and metallic elements (Fe, Cu, Pb, Zn, Cd, Cr, Mn, Hg, and As) in intertidal sediments collected from six islands in the western part of Jellanam Province in order to evaluate heavy metal contamination in the tidal flat sediments of coastal islands. The evaluation of metal contamination was carried out using geochemical assessment techniques such as sediment quality guidelines (SQGs), enrichment factor (EF), and geoaccumulation index ($I_{geo}$). Surface sediments were classified into four sedimentary facies: sand, gravelly muddy sand, slightly gravelly mud, and silt. The concentrations of heavy metals in intertidal sediments from Jaeun, Amtae, Biguem, and Docho islands showed good positive correlations with mean grain size and ignition loss, indicating that the concentrations of metallic elements in these sediments were dependent on grain size and the organic matter content. The concentrations of heavy metals in sediments from almost all of the stations were lower than two criterion values proposed by the National Oceanic and Atmospheric Administration (NOAA) in the United States. Based on the EF and $I_{geo}$ results, surface sediments were a little polluted for Cr and were moderately polluted for As. Our results suggest that more intensive studies are necessary in the future in order to determine the major source of As in intertidal sediment and to evaluate the As pollution level in macrobenthos.

키워드

Tidal flat;Heavy metal;Sediment quality guideline (SQGs);Enrichment factor (EF);Geoaccmulation index (Igeo)

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피인용 문헌

  1. 1. Organic Enrichment and Pollution in Surface Sediments from Shellfish Farming in Yeoja Bay and Gangjin Bay, Korea vol.46, pp.4, 2013, doi:10.5657/KFAS.2011.0772
  2. 2. Evaluation of Organic Matter and Trace Metal Contaminations of Intertidal Sediments from Coastal Islands in the Southern Region of Jeollanam Province vol.46, pp.5, 2013, doi:10.5657/KFAS.2011.0772
  3. 3. Evaluation of Pollution Level for Organic Matter and Trace Metals in Sediments around Taehwa River Estuary, Ulsan vol.48, pp.4, 2015, doi:10.5657/KFAS.2011.0772
  4. 4. Sedimentary and Benthic Environment Characteristics in Macroalgal Habitats of the Intertidal Zone in Hampyeong Bay vol.45, pp.6, 2012, doi:10.5657/KFAS.2011.0772
  5. 5. Temporal and Spatial Variation of Nutrient Concentrations in Shallow Pore Water in Intertidal Sandflats of Jeju Island vol.45, pp.6, 2012, doi:10.5657/KFAS.2011.0772
  6. 6. Distributions of Organic Matter and Trace Metals in Surface Sediments around a Manila Clam Ruditapes phillippinarum Farming Area in Gomso Bay, Korea vol.48, pp.4, 2015, doi:10.5657/KFAS.2011.0772
  7. 7. Distributions of Organic Matter and Trace Metals in Intertidal Surface Sediment from the Mokpo-Haenam Coast vol.46, pp.4, 2013, doi:10.5657/KFAS.2011.0772
  8. 8. Geochemical Characteristics of Intertidal Sediment in the Semi-enclosed Bays of the Southern Region of Jeollanam Province vol.46, pp.5, 2013, doi:10.5657/KFAS.2011.0772

과제정보

연구 과제 주관 기관 : 국립수산과학원