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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Chen, Yuanzhen Si, Youbin Zhou, Dongmei Dang, Fei |
| Spatial Coverage | China |
| Description | Country affiliation: China Author Affiliation: Chen Y ( Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008 China); Si Y ( School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China.); Zhou D ( Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008 China.); Dang F ( Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008 China. Electronic address: fdang@issas.ac.cn.) |
| Abstract | With the increasing application in antimicrobial products, silver nanoparticles (AgNP) are inevitably released into the terrestrial environment, and pose potential risks to invertebrates such as land snails Achatina fulica, which take up AgNP from food and water. Here we differentiate Ag uptake biodynamic between Ag forms (i.e., PVP-AgNP vs. AgNO ) and between exposure pathways. Snails assimilated Ag efficiently from lettuce leaves pre-exposed to AgNP, with assimilation efficiencies (AEs) averaging 62-85% and food ingestion rates of 0.11 ± 0.03 g g d . Dietary Ag bioavailability was independent on Ag forms, as revealed by comparable AEs between AgNP and AgNO . However, the uptake rate constant from water was much lower for AgNP relative to AgNO (2 × 10 vs. 0.12 L g d ). The elimination rate constants were 0.0093 ± 0.0037 d for AgNP and 0.019 ± 0.0077 d for AgNO . Biodynamic modeling further showed that dietary exposure was the dominant uptake pathway for AgNP in most circumstances, while for AgNO the relative importance of waterborne and dietary exposure depended on Ag concentrations in food and water. Our findings highlight the importance of dietary uptake of AgNP during bioaccumulation, which should be considered in the risk assessment of these nanoparticles. |
| File Format | HTM / HTML |
| ISSN | 02697491 |
| Volume Number | 222 |
| e-ISSN | 18736424 |
| Journal | Environmental Pollution |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2017-03-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Discipline Science Biological Availability Lettuce Chemistry Silver Nitrate Metabolism Silver Snails Animals China Metal Nanoparticles Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Pollution Medicine Toxicology |
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