Study on the Adsorption and Absorption Behaviors of Ulva lactuca L. for Zn2+ in Seawater
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Yantai Engineering and Technology College, Yantai, 264006, Shandong, China
Fengdu Ecological Environmental Monitoring Station, Fengdu, 408200, Chongqing, China
Dongying Ocean Development Research Institute, Dongying, 257009, Shandong, China
Dongying Investment Promotion Service Center, Dongying, 257009, Shandong, China
Submission date: 2022-02-21
Final revision date: 2022-04-26
Acceptance date: 2022-05-07
Online publication date: 2022-07-14
Publication date: 2022-09-28
Corresponding author
Haimei Li   

Yantai Engineering & Technology College, No. 2018, Binhai Middle Road, Laishan District,, 264006, Yantai, China
Pol. J. Environ. Stud. 2022;31(5):4735-4744
Zn is an essential substance for the metabolism of marine algae, and its biogeochemical cycle in coastal waters needs to be clarified by an appropriate biological indicator. In this study, the distribution characteristics of Zn2+ on the surface of alga Ulva lactuca L. (externalization) and alga utilization (internalization) were analyzed through simulating. The results showed that during the initial cultivation period (0 h–72 h), the Zn2+ enrichment of Ulva lactuca L. was mainly externalization. As the culture time was prolonged, this behavior gradually turned into internalization. The final internalization amount of Zn2+ was 10.35 μg·g−1, and the externalization amount was 9.14 μg·g−1. Ulva lactuca L. exhibited apparent Zn enrichment behavior. The adsorption capacity in the system had a linear relationship with the concentration of Zn and total organic carbon (TOC) in the solution. The linear relationship became gradually stronger with cultivation time. In summary, Ulva lactuca L. can become a crucial biological indicator for monitoring coastal Zn under natural conditions.
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