สืบค้นงานวิจัย
Occurrence of heavy metals and radionuclides in sediments and seawater in mangrove ecosystems in Pattani Bay, Thailand
Kaewtubtim P. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Occurrence of heavy metals and radionuclides in sediments and seawater in mangrove ecosystems in Pattani Bay, Thailand
ผู้แต่ง / หัวหน้าโครงการ (EN): Kaewtubtim P.
บทคัดย่อ (EN): Mangrove ecosystems in Pattani Bay, Thailand are considered representatives for monitoring the occurrence of anthropogenic and natural pollution due to metal and radionuclide contamination. Sediments and seawater were collected from five locations to determine metal (Cd, Cr, Cu, Mn, Ni, Zn, and Pb) and radionuclide (226Ra, 232Th, and 40K) concentrations. Spatial variations in metal and radionuclide concentrations were determined among the sampling sites. A geoaccumulation index (Igeo) and enrichment factor (EF) were used to classify the impacts of metals from anthropogenic point sources. Significant values for Igeo and EF were measured for Pb in site 4 (Igeo 0.65; EF 28.2) and Cd in site 1 (Igeo 1.48; EF 46.2). EF values in almost all sampling sites were >1 which indicates anthropogenic pollution. To assess the potential public hazard of radioactivity, the average radium equivalent activity (Raeq), the external hazard index (Hex), the internal hazard index (Hin), the absorbed dose rate in air (D), and the annual effective outdoor dose rate (E) were determined. Based on these measurements, it is concluded that the probability of human health risk from radionuclides is low. However, the absorbed dose in air (D) values in sites 4 and 5 were greater than the global average value of 55 nGy h−1, indicating that sediments in these locations pose a radiological hazard. The data obtained in this study provides useful information on metal and radionuclide background levels in mangrove sediments and seawater, and can be applied toward human health risk assessment and metal and radionuclide mapping. © 2017, Springer-Verlag Berlin Heidelberg.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-85010791627&doi=10.1007%2fs11356-016-8266-9&partnerID=40&md5=af654b8478f9d79b4a96a3b264de2acc
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Water Pollutants, Chemical
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Kaewtubtim P.. "Occurrence of heavy metals and radionuclides in sediments and seawater in mangrove ecosystems in Pattani Bay, Thailand". ไม่ระบุหน่วยงาน. ม.ป.ป.

Kaewtubtim P.. "Occurrence of heavy metals and radionuclides in sediments and seawater in mangrove ecosystems in Pattani Bay, Thailand". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Occurrence of heavy metals and radionuclides in sediments and seawater in mangrove ecosystems in Pattani Bay, Thailand
Kaewtubtim P.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
Heavy metal accumulation in sediments and mangrove forest stems from Surat Thani Provice, Thailand Phytomanagement of radionuclides and heavy metals in mangrove sediments of Pattani Bay, Thailand using Avicennia marina and Pluchea indica Erratum to: Occurrence of heavy metals and radionuclides in sediments and seawater in mangrove ecosystems in Pattani Bay, Thailand (Environ Sci Pollut Res, 10.1007/s11356-016-8266-9) Mangrove forests in Thailand Metal uptake and accumulation by mangrove plant species in Pattani Bay, Thailand Heavy metal phytoremediation potential of plant species in a mangrove ecosystem in Pattani Bay, Thailand Radionuclide (226Ra, 232Th, 40K) accumulation among plant species in mangrove ecosystems of Pattani Bay, Thailand Increasing Growth Opportunities for Non-heavy and Heavy Users–A Case Study of Yogurt Cups in Thailand Elsholtzia (Lamiaceae) in Thailand Spatial distribution and mobility factor of heavy metals in agricultural soil in the vicinity of abandoned lead ore dressing plant, Klity village, Thailand
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