中国海洋大学学报（自然科学版）2025，Vol.55Issue(6)：112-120,9.DOI:10.16441/j.cnki.hdxb.20240111
溶解态腹泻性贝毒在悬浮颗粒物和沉积物介质上的吸附和分配行为研究
Adsorption and Partition Behavior of Dissolved Diarrhetic Shellfish Toxins on Suspended Particulate and Sediment Medium
摘要
Abstract
Diarrhetic shellfish toxins(DSTs)are a group of lipophilic marine phycotoxins produced by Dinophysis spp.and Prorocentrum spp.,which are widely distributed in marine environments and po-tentially threaten the sustainable development of mariculture and the health of marine ecosystems.The current understanding of the transport partition processes of the dissolved DSTs in marine environments is very limited.Therefore,two typical components of DSTs toxins,okadaic acid(OA)and dinophysis-toxin-1(DTX1),were selected in this study.The adsorption behavior of toxins by suspended particu-late matter(SPM)and surface sediments in Jiaozhou Bay and the partitioning behavior of toxins in the sedimentary environment of the Yellow Sea and Bohai Sea,China,were investigated through indoor simulation experiments and investigation of field sediment samples.The results showed that SPM and surface sediments were weakly adsorbed for OA(5.70％and 17.80％)and DTX1(17.12％and 20.64％),and the adsorption isotherms were consistent with the Langmuir model and the Freundlich model,respectively.The concentrations of OA and DTX1 in the sedimentary interstitial water of the Yellow Sea and Bohai Sea,China,were significantly higher than those in surface seawater.The mean partition fraction(φP)of DSTs in the depositional environment is 84.64％.The results of this study provide the scientific basis for further understanding of the environmental fate of DSTs in marine envi-ronments,which is markedly significant for protection of the health of marine ecosystems.关键词
腹泻性贝毒/悬浮颗粒物/表层沉积物/吸附/分配Key words
diarrhetic shellfish toxins/suspended particulate matter/surface sediments/adsorption/partition分类
资源环境引用本文复制引用
殷超,邱江兵,李爱峰,李东岳,杨永猛..溶解态腹泻性贝毒在悬浮颗粒物和沉积物介质上的吸附和分配行为研究[J].中国海洋大学学报（自然科学版）,2025,55(6):112-120,9.基金项目
国家自然科学基金项目(U2106205) （U2106205）
青岛市自然科学科学基金项目(23-2-1-229-zyyd-jch) （23-2-1-229-zyyd-jch）
山东省泰山学者特聘专家项目(tstp20231216)资助 Supported by the National Natural Science Foundation of China(U2106205) （tstp20231216）
Qingdao Natural Science Foundation(23-2-1-229-zyyd-jch) （23-2-1-229-zyyd-jch）
the Special Foundation for Taishan Scholar of Shandong Province(tstp20231216) （tstp20231216）
