Seasonal and Spatial Variation of Heavy Metals in the Inner Gulf of Thailand

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ณัฐวร ขันธิกุล
เชษฐพงษ์ เมฆสัมพันธ์
ณิศรา ถาวรโสตร์
สราวุธ ศรีทองอุทัย

Abstract

Studies on heavy metals (cadmium, lead, copper and zinc) and total organic matter in sediment were carried out by collecting sediment samples from 40 stations in the Inner Gulf of Thailand. The field surveys were conducted two times in April and December 2017 as a representative of pre southwest monsoon and post southwest monsoon, respectively. The result showed that the concentrations of lead, copper and zinc in sediment ranged between 9.8-27.1, 2.4-41.1 and 5.5-91.2 ppm, respectively. The result demonstrated that some of the study areas had copper concentration in sediment over the standard level of coastal sediment quality which was issued by Pollution Control Department of Thailand, while the cadmium concentration was lower than method detection limit. Most of the heavy metals in sediment had a high concentration in the coastal area and decreased toward the offshore area. According to the total organic matter in the sediment, it ranged between 1.9-18.2 %. The result from statistical analysis revealed that lead, copper and zinc in sediment had a significant difference among time. All concentrations of studied heavy metals trended to decrease from pre southwest monsoon to post southwest monsoon. Moreover, the heavy metals in sediment (except cadmium) had significantly correlated with total organic matter. The result from the geo-accumulation (Igeo) index indicated that the concentration of heavy metals in sediment in the Inner Gulf of Thailand was still unpolluted status.

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วิทยาศาสตร์กายภาพ
Author Biographies

ณัฐวร ขันธิกุล

ภาควิชาวิทยาศาสตร์ทางทะเล คณะประมง มหาวิทยาลัยเกษตรศาสตร์ แขวงลาดยาว เขตจตุจักร กรุงเทพมหานคร 10900

เชษฐพงษ์ เมฆสัมพันธ์

ภาควิชาวิทยาศาสตร์ทางทะเล คณะประมง มหาวิทยาลัยเกษตรศาสตร์ แขวงลาดยาว เขตจตุจักร กรุงเทพมหานคร 10900

ณิศรา ถาวรโสตร์

ภาควิชาวิทยาศาสตร์ทางทะเล คณะประมง มหาวิทยาลัยเกษตรศาสตร์ แขวงลาดยาว เขตจตุจักร กรุงเทพมหานคร 10900

สราวุธ ศรีทองอุทัย

ภาควิชาวิทยาศาสตร์สิ่งแวดล้อม คณะวิทยาศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย แขวงวังใหม่ เขตปทุมวัน กรุงเทพมหานคร 10330

References

[1] Buranapratheprat, A., Yanagi, T. and Matsumura, S., 2008, Seasonal variation in water column conditions in the upper Gulf of Thailand, Cont. Shelf Res. 28: 2509-2522.
[2] Sojisuporn, P., Niemnil, S. and Tungjaitong, S., 2003, Eye on the Ocean: Physic in the Ocean, National research Council of Thailand, Bangkok. (in Thai)
[3] Pollution Control Department, 2005, Unep GEF Project on Reversing Environmental Degradation Trends in the South China Sea and Gulf of Thailand (UNEP GEF SCS), Bangkok. (in Thai)
[4] Altindag, A. and Yigit, S., 2005, Assessment of heavy metal concentration in the food web of lake Beysehir, Turkey, Chemo sphere 60: 552-556.
[5] Pollution Control Department, 2015, Determine the Quality Criteria for Coastal Sediment. Bangkok. (in Thai)
[6] Meksumpun, C., 2005, Sediment, Faculty of Fisheries, Kasetsart University, Bangkok. (in Thai)
[7] Verardo, D., Froelich, P.N. and McIntyre, A., 1990, Determination of organic carbon and nitrogen in marine sediments using the Carlo Erba NA-1500 Analyze, Deep-Sea Res. 37: 157-165.
[8] Hungspreugs, M. and Yuangthong, C., 1983, A history of metal pollution in the upper Gulf of Thailand, Mar. Poll. Bull. 14: 465-469.
[9] Turekian, K.K. and Wedepohl, K.H., 1961, Distribution of the element in some major unit of earth’s crust, GSA Bull. 72: 175-192.
[10] Förstner, U. and Wittman, G.T.W., 1983, Metal Pollution in Aquatic Environment, Springer-Verlag, Berlin.
[11] Musika, C., Wongsudawan, W. and Thongra-ar, W., 2014, Distribution and accumulation of heavy metals in sediments of the Inner Gulf of Thailand, pp. 569-580, Proceedings of the 4th Marine Science: Blue Ocean Science, Prince of Songkla University, Songkla. (in Thai)
[12] Chaiyabutr, W., 1998, The Study of Some Heavy Metals in Water, Sediment and Various Tissues of Some Fish Species in the Mae Klong River, Master Thesis, Kasetsart University, Bangkok. (in Thai)
[13] Meksumpun, C., Meksumpun, S. and Ajjimangkul, S., 2007, What we have learnt from multidisciplinary research on aquatic resource management of the largest reservoir of Thailand?, pp. 180-188, Proceedings of the 5th International Symposium on Southeast Asia Water Environment, Chiangmai. (in Thai)
[14] Sompongchaiyakul, P., 1989, Analysis of Chemical Species for Trace Metals in Near-Shore Sediment by Sequential Leaching Method, Master Thesis, Chulalongkorn University, Bangkok. (in Thai)