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Biokinetic Modeling of Cd Bioaccumulation from Water, Diet and Sediment in a Marine Benthic Goby: A Triple Stable Isotope Tracing Technique
Guo, Zhigiang1; Ye, Hengzhen1; Xiao, Juan2; Hogstrand, Christer3; Zhang, Li
2018
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume52Issue:15Pages:8429
AbstractAquatic animals are often simultaneously exposed to metals through multiple routes in the natural environment. This study explored a triple stable isotope tracing method to quantify simultaneous cadmium (Cd) uptake biokinetics by yellow stripe goby from water (traced by Cd-111), sediment (traced by Cd-110), and diet (traced by Cd-113) when the fish were exposed to Cd for 24 h. The simultaneous uptake of Cd from multiple routes during 4 weeks was then predicted by the modified biokinetic model. The results demonstrated that the uptake rate constant of waterborne Cd-110, sediment-associated Cd-111, and dietary Cd-113 was 3.1 L kg(-1) d(-1), 2.2 X 10(-4) g g(-1) d(-1), and 3.3 X 10(-3) g g(-1) d(-1) in the fish. Sedimentary Cd was less bioavailable than the waterborne and dietary Cd; become the predominant Cd source of the total Cd bioaccumulation when the partition coefficient of Cd between sediment and seawater (K-d) is larger than 6 X 10(4) L kg(-1).The simultaneous uptake of Cd from the three routes could be successfully predicted by the modified model. The model revealed that the Cd bioaccumulation generally increased with the increase of ambient Cd concentration in all the three routes. Overall, our findings demonstrated that the multiple stable isotopes tracing method and the modified biokinetic model have a wide generality and applicability for predicting Cd bioaccumulation under multiple routes of metal exposure scenario and may have application to other metals.
DepartmentLMB
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17646
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China
2.Hainan Univ, Coll Marine Sci, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China
3.Hainan Univ, Coll Food Sci & Technol, Haikou 570228, Hainan, Peoples R China
4.Kings Coll London, Met Metab Grp, Sch Life Course Sci, 150 Stamford St, London SE1 9NH, England
Recommended Citation
GB/T 7714
Guo, Zhigiang,Ye, Hengzhen,Xiao, Juan,et al. Biokinetic Modeling of Cd Bioaccumulation from Water, Diet and Sediment in a Marine Benthic Goby: A Triple Stable Isotope Tracing Technique[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(15):8429, 8437.
APA Guo, Zhigiang,Ye, Hengzhen,Xiao, Juan,Hogstrand, Christer,&Zhang, Li.(2018).Biokinetic Modeling of Cd Bioaccumulation from Water, Diet and Sediment in a Marine Benthic Goby: A Triple Stable Isotope Tracing Technique.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(15),8429.
MLA Guo, Zhigiang,et al."Biokinetic Modeling of Cd Bioaccumulation from Water, Diet and Sediment in a Marine Benthic Goby: A Triple Stable Isotope Tracing Technique".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.15(2018):8429.
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