Abstract：
:To evaluate substance toxicity, it is critical to maintain specific concentrations of test substances throughout the exposure period. During the last decade, the need to improve methods for nanoparticle (NP) suspension preparations has gained attention because many published results on NPs toxicity have been inconsistent. Here, we compared the toxicity of citrate-coated silver nanoparticles (AgNPs) suspended by two different methods (fractionated vs. colloidal) in freshwater organisms (daphnia and medaka). Analytical methods (ICP-OES, DLS and UV absorbance) were employed to characterize behavior of AgNPs in suspension. Results showed that fractionated (stirred and settled) solution was less toxic to daphnia (13.8 µg/L) than colloidal solution (6.1 µg/L), suggesting that method of preparation was a critical factor that affected toxicity. However, differences in toxicity caused by suspension methods were not observed in medaka. Results indicate that the method used to prepare suspensions of NPs can affect toxicity, and that differences can exist among test organisms.
journal_name
Bull Environ Contam Toxicoljournal_title
Bulletin of environmental contamination and toxicologyauthors
Park JW,Oh JH,Kim WK,Lee SKdoi
10.1007/s00128-014-1296-4subject
Has Abstractpub_date
2014-07-01 00:00:00pages
53-9issue
1eissn
0007-4861issn
1432-0800journal_volume
93pub_type
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
pub_type： 杂志文章
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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pub_type： 杂志文章
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