TY - JOUR
T1 - Intra- and inter-habitat variation in sediment heavy metals, antibiotics and ecological risks in Mai Po RAMSAR, China
AU - Lam, Kit-Ling
AU - Tam, Nora Fung-Yee
AU - Xu, Steven Jing-Liang
AU - Mo, Wing-Yin
AU - Chan, Ping-Lung
AU - Lee, Fred Wang-Fat
PY - 2023/8
Y1 - 2023/8
N2 - Distribution of heavy metals (HMs) and antibiotics (ABs) in surface sediments of three habitats: mudflat, mangrove and gei wai (inter-tidal shrimp ponds), at Mai Po RAMSAR were determined with inductively coupled plasma and liquid chromatograph tandem - mass spectrometry, respectively. Eight HMs (Cr, As, Pb, Cd, Mn, Ni, Cu and Zn), and ten ABs (tetracyclines, quinolones, macrolides and sulphonamides) were detected in all habitats, with relatively lower concentration in gei wai. Ecological risk assessment based on PNEC revealed that HMs posed a higher ecological risk to microorganisms than ABs. All metals except Mn were above their respective threshold effect levels according to sediment quality guidelines, indicating their potential toxicity to benthos. The enrichment factor and geo-accumulation index on background values suggested sediments were moderately polluted by Zn, Cu and Cd, possibly from anthropogenic inputs. This study implies that HMs pollution must be prevented through proper regulation of agricultural and industrial discharge. © 2023 Elsevier Ltd
AB - Distribution of heavy metals (HMs) and antibiotics (ABs) in surface sediments of three habitats: mudflat, mangrove and gei wai (inter-tidal shrimp ponds), at Mai Po RAMSAR were determined with inductively coupled plasma and liquid chromatograph tandem - mass spectrometry, respectively. Eight HMs (Cr, As, Pb, Cd, Mn, Ni, Cu and Zn), and ten ABs (tetracyclines, quinolones, macrolides and sulphonamides) were detected in all habitats, with relatively lower concentration in gei wai. Ecological risk assessment based on PNEC revealed that HMs posed a higher ecological risk to microorganisms than ABs. All metals except Mn were above their respective threshold effect levels according to sediment quality guidelines, indicating their potential toxicity to benthos. The enrichment factor and geo-accumulation index on background values suggested sediments were moderately polluted by Zn, Cu and Cd, possibly from anthropogenic inputs. This study implies that HMs pollution must be prevented through proper regulation of agricultural and industrial discharge. © 2023 Elsevier Ltd
KW - Anthropogenic pollution
KW - Gei wai shrimp pond
KW - Mangrove habitat
KW - Mudflat
KW - Risk quotient
UR - http://www.scopus.com/inward/record.url?scp=85162248670&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85162248670&origin=recordpage
U2 - 10.1016/j.marpolbul.2023.115178
DO - 10.1016/j.marpolbul.2023.115178
M3 - RGC 21 - Publication in refereed journal
C2 - 37354831
SN - 0025-326X
VL - 193
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
M1 - 115178
ER -
