caa a22 4500 606199829 CHVBK 20210128100940.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10653-014-9635-2 doi (NATIONALLICENCE)springer-10.1007/s10653-014-9635-2 Heavy metals and polycyclic aromatic hydrocarbons in municipal sewage sludge from a river in highly urbanized metropolitan area in Hanoi, Vietnam: levels, accumulation pattern and assessment of land application [Elektronische Daten] [Cao Hung, Bui Cam, Pham Mai, Bach Dzung] Concentrations of heavy metals and polycyclic aromatic hydrocarbons (PAHs) in sludge from Kim Nguu River, Hanoi, Vietnam, were analyzed to understand the contamination levels, distribution and accumulation pattern of municipal sludge from a highly urbanized area that receive direct discharge of wastewater. High concentrations of heavy metals such as As, Cd, Pb, Cu and Zn were observed in sludge, which were exceeded the Vietnamese regulation threshold values. In general, contamination status of heavy metals in sludge was in the similar range or slightly lower than those previously reported in sludge from the same area. The mean concentrations of As, Cd, Cr, Cu, Ni, Pb and Zn were 24.3, 2.65, 105, 166, 60.8, 73.7 and 569mg/kg dry wt., respectively. Our result also indicates increased levels of PAHs, which are among the first data on PAHs accumulation in municipal sludge from metropolitan area in Vietnam. PAH concentrations ranged from 218 to 751mg/kg dry wt. (mean: 456mg/kg dry wt.), which were greater than those reported in sewage sludge from other countries as well as in sediments and soils collected from the same area. Accumulation pattern revealed the predominant of higher-ringed PAH compounds. Indicator ratios suggest the sources of PAHs were probably derived from biomass (wood and coal) and fossil fuel combustion and petroleum emissions. Most of the sludge samples contain PAHs concentrations exceeding various international guidelines values for sludge and sediment, such as probable effect levels, suggesting the possible risk for adverse biological effects in the study area and in the landfill sites where dredged sludge was dumped. Springer Science+Business Media Dordrecht, 2014 Kim Nguu River nationallicence Municipal sludge nationallicence Heavy metals nationallicence Polycyclic aromatic hydrocarbons nationallicence Hung Cao Faculty of Chemistry, Hanoi University of Science, VNU University of Science, 19 Le Thanh Tong Street, Hoan Kiem District, Hanoi, Vietnam aut Cam Bui Faculty of Chemistry, Hanoi University of Science, VNU University of Science, 19 Le Thanh Tong Street, Hoan Kiem District, Hanoi, Vietnam aut Mai Pham Faculty of Chemistry, Hanoi University of Science, VNU University of Science, 19 Le Thanh Tong Street, Hoan Kiem District, Hanoi, Vietnam aut Dzung Bach Vietnam Institute of Meteorology, Hydrology and Environment (IMHEN), 3 Dang Thai Than Street, Hoan Kiem District, Hanoi, Vietnam aut Environmental Geochemistry and Health Springer Netherlands 37/1(2015-02-01), 133-146 0269-4042 37:1<133 2015 37 10653 https://doi.org/10.1007/s10653-014-9635-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10653-014-9635-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hung Cao Faculty of Chemistry, Hanoi University of Science, VNU University of Science, 19 Le Thanh Tong Street, Hoan Kiem District, Hanoi, Vietnam aut NATIONALLICENCE 700 1- Cam Bui Faculty of Chemistry, Hanoi University of Science, VNU University of Science, 19 Le Thanh Tong Street, Hoan Kiem District, Hanoi, Vietnam aut NATIONALLICENCE 700 1- Mai Pham Faculty of Chemistry, Hanoi University of Science, VNU University of Science, 19 Le Thanh Tong Street, Hoan Kiem District, Hanoi, Vietnam aut NATIONALLICENCE 700 1- Dzung Bach Vietnam Institute of Meteorology, Hydrology and Environment (IMHEN), 3 Dang Thai Than Street, Hoan Kiem District, Hanoi, Vietnam aut NATIONALLICENCE 773 0- Environmental Geochemistry and Health Springer Netherlands 37/1(2015-02-01), 133-146 0269-4042 37:1<133 2015 37 10653