Seasonal and Spatial Variation in Dissolved Heavy Metals in Liaodong Bay, China

Weijun Guo, Jibing Zou, Sihong Liu, Xuewen Chen, Xiangpeng Kong, Hong Zhang and Tiaojian Xu
Additional contact information
Weijun Guo: College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026, China
Jibing Zou: College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026, China
Sihong Liu: College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026, China
Xuewen Chen: Suzhou New District (Huqiu District) Shishan & Hengtang Sub-District Construction and Management Service Centre, Suzhou 215000, China
Xiangpeng Kong: College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026, China
Hong Zhang: Dalian Municipal Public Utilities Service Center, Dalian 116021, China
Tiaojian Xu: State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China

IJERPH, 2022, vol. 19, issue 1, 1-12

Abstract: Spatial–seasonal variations in dissolved heavy metals in surface seawater were analyzed based on surveys at 87 sampling sites and water samples from six rivers across Liaodong Bay. The concentrations of copper (Cu), lead (Pb), cadmium (Cd), and zinc (Zn) had ranges of 0.20–40.00 (5.45 ± 5.67), 0.51–33.64 (4.68 ± 3.93), 0.03–13.47 (2.22 ± 2.01), and 0.50–80.09 μg/L (14.22 ± 16.32), respectively, throughout the four seasons of 2020. The trace metal concentration showed a spatial gradient of high to low from river to estuary and from inshore to offshore areas. A combination of pollution levels and marine sensitivity was employed to assess the pollution degree of the heavy metals. As a whole, the single pollution factors of trace metals in Liaodong Bay were ranged in the order Pb > Zn > Cu > Cd. The total pollution degree was relatively high in autumn and summer due to increased riverine inputs after the rainy season, while relatively low in spring and winter. These findings provide baseline data for future targeting policies to protect marine environments in Liaodong Bay.

Keywords: Liaodong Bay; dissolved heavy metals; seasonal variation; spatial distribution (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1660-4601/19/1/608/pdf (application/pdf)
https://www.mdpi.com/1660-4601/19/1/608/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:19:y:2022:i:1:p:608-:d:718464

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().