WAN Ruian1,2, HAN Lu1, YU Ruilian1, HU Gongren1,2, CUI Jianyong3, YAN Yan3, HUANG Huabin2
(1. College of Chemical Engineering, Huaqiao University, Fujian Xiamen 361021, China;
2. Key Laboratory of Environmental Monitoring of University in Fujian Province, Fujian Xiamen 361024, China;
3. Analytical Laboratory of Beijing Research Institute of Uranium Geology, Beijing 100029, China)
Abstract: The environmental background values of heavy metals are the premise and basis for evaluating environmental pollution of heavy metals and setting environmental quality standards. In order to determine the background values of heavy metals in sediment of the Western Bay coastal area of Xiamen, sediment cores were sampled and contents of heavy metals in sediments from different depths were determined. The segments in sediment cores received no influence from human activities were screened and the background values of heavy metals of the study area were determined on the basis of vertical distributions of heavy metals in sediment cores. The results showed that background values (ranges) of heavy metals are respectively Sc 13.85 (11.52-16.69), V 101.03 (94.61-107.45), Cr 63.50 (55.00-69.20), Co 14.62 (13.70-15.54), Ni 29.92 (27.23-32.54), Cu 21.48 (17.95-25.01), Zn 118.81 (96.39-141.23), Pb 41.80 (38.41-57.35), Sr 97.78 (93.22-102.34), Mo 1.39 (0.59-2.19), Sb 0.58 (0.53-0.63), Ba 407.00 (378.15-427.00), Tl 0.93 (00.72-1.05), Bi 0.71 (0.51-0.82), Fe 32 610.27 (19 903.73-53 428.67), Mn 393.20 (306.67-793.63), Cd 0.066 (0.056-0.076) mg/kg. Compared with background values in coastal soils of Fujian, surface soils of Xiamen, continental crust of China, shallow sea sediments of China and drainage sediments of China, the content of Sr is slightly lower while the contents of Pb and Zn are slightly higher, indicating that above background value data are regional and credible. The main factors of affecting background values of heavy metals in sediments of the Western Bay coastal area of Xiamen are terrestrial material, sediment grain size and geochemical characteristics.
Key words: Xiamen Western Bay coastal area; sediment; heavy metal; background value
EARTH AND ENVIRONMENT Vol.47, No.3, Tot No.329, 2019, Page 352-360
