PMID- 36400187
OWN - NLM
STAT- MEDLINE
DCOM- 20221207
LR  - 20221207
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 312
IP  - Pt 1
DP  - 2023 Jan
TI  - Nano-TiO(2) modifies heavy metal bioaccumulation in Daphnia magna: A model study.
PG  - 137263
LID - S0045-6535(22)03756-0 [pii]
LID - 10.1016/j.chemosphere.2022.137263 [doi]
AB  - Due to special properties, nano-TiO(2) will interact with heavy metals and other 
      pollutants in water, thus affecting the environmental behavior and ecotoxicity of 
      these pollutants. However, the exact manner in which nano-TiO(2) affects the 
      bioaccumulation mechanisms of heavy metals is still unclear now. In the present 
      study, quantitative structure bioaccumulation relationship (QSBAR) models were 
      established to explore the relationships between physicochemical parameters of 
      heavy metals and their accumulation in Daphnia magna in the absence and presence 
      of nano-TiO(2) at low metal exposure concentrations. The results showed that 
      different physicochemical parameters affected the bioaccumulation of metals in 
      Daphnia magna. The metal accumulation could be described by means of a 
      Comprehensive Parameter composed of seven parameters, i.e., atomic number (AN), 
      relative atomic weight (AW), atomic radius (AR), atomic ionization potential 
      (AN/DeltaIP), covalent index (X(2)r), second ionization energy (I(2)) and 
      electrochemical potential (E(0)), in the absence of nano-TiO(2), whereas the 
      metal accumulation increased with the increase in Van Der Waals radius (r(w)) of 
      metals in the presence of nano-TiO(2). It was demonstrated that the 
      bioaccumulation mechanism of the metals to Daphnia magna changed in the presence 
      of nano-TiO(2). Moreover, the bioaccumulation of more than 85% of the metals 
      increased in the presence of nano-TiO(2), but it increased differently for 
      different metals. The present study provides an alternative approach to 
      understand the mechanism of heavy metal bioaccumulation at low metal exposure 
      concentrations and the effect of nano-TiO(2) on metal bioaccumulation.
CI  - Copyright (c) 2022 Elsevier Ltd. All rights reserved.
FAU - Wang, Ying
AU  - Wang Y
AD  - School of Space and Environment, Beihang University, Beijing, 100191, China; 
      Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang 
      University, Beijing, 100191, China.
FAU - Gao, Xiang
AU  - Gao X
AD  - School of Space and Environment, Beihang University, Beijing, 100191, China.
FAU - Cheng, Yinghao
AU  - Cheng Y
AD  - School of Space and Environment, Beihang University, Beijing, 100191, China.
FAU - Peijnenburg, Willie J G M
AU  - Peijnenburg WJGM
AD  - Leiden University, Institute of Environmental Sciences (CML), 2300 RA, Leiden, 
      the Netherlands; National Institute of Public Health and the Environment (RIVM), 
      Center for Safety of Substances and Products, 3720 BA, Bilthoven, the 
      Netherlands.
FAU - Dong, Zhaomin
AU  - Dong Z
AD  - School of Space and Environment, Beihang University, Beijing, 100191, China; 
      Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang 
      University, Beijing, 100191, China.
FAU - Fan, Wenhong
AU  - Fan W
AD  - School of Space and Environment, Beihang University, Beijing, 100191, China; 
      Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang 
      University, Beijing, 100191, China. Electronic address: fanwh@buaa.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20221115
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 15FIX9V2JP (titanium dioxide)
RN  - 0 (Water Pollutants, Chemical)
RN  - D1JT611TNE (Titanium)
RN  - 0 (Metals, Heavy)
SB  - IM
MH  - Animals
MH  - Daphnia
MH  - Bioaccumulation
MH  - *Water Pollutants, Chemical/chemistry
MH  - *Nanoparticles/toxicity
MH  - Titanium/chemistry
MH  - *Metals, Heavy/toxicity
OTO - NOTNLM
OT  - Bioaccumulation
OT  - Daphnia magna
OT  - Metals
OT  - Nano titanium dioxide (nano-TiO(2))
OT  - QSAR model
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2022/11/19 06:00
MHDA- 2023/02/25 06:00
CRDT- 2022/11/18 19:32
PHST- 2022/07/26 00:00 [received]
PHST- 2022/10/23 00:00 [revised]
PHST- 2022/11/14 00:00 [accepted]
PHST- 2022/11/19 06:00 [pubmed]
PHST- 2023/02/25 06:00 [medline]
PHST- 2022/11/18 19:32 [entrez]
AID - S0045-6535(22)03756-0 [pii]
AID - 10.1016/j.chemosphere.2022.137263 [doi]
PST - ppublish
SO  - Chemosphere. 2023 Jan;312(Pt 1):137263. doi: 10.1016/j.chemosphere.2022.137263. 
      Epub 2022 Nov 15.