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Trophic transfer of citrate, PVP coated silver nanomaterials, and silver ions in a paddy microcosm.
Environ Pollut. 2018 Apr; 235:435-445.EP

Abstract

We used replicated paddy microcosm systems to estimate the tropic transfer of citrate-coated silver nanoparticles (AgNP citrate), polyvinylpyrrolidone (PVP)-coated AgNP (AgNP PVP), and silver ions (AgNO3) for 14 days under two exposure regimes (a single high-dose exposure; 60 μg L-1 and a sequential low-dose exposure at 1 h, 4 days and 9 days; 20 μg L-1 × 3 = 60 μg L-1). Most Ag ions from AgNO3 had dispersed in the water and precipitated partly on the sediment, whereas the two Ag NPs rapidly coagulated and precipitated on the sediment. The bioconcentration factors (BCFs) of Ag from AgNPs and AgNO3 in Chinese muddy loaches and biofilms were higher than those of river snails in both exposure conditions. These BCFs were more prominent for 14 days exposure (7.30 for Chinese muddy loach; 4.48 for biofilm) in the low-dose group than in the single high-dose group. Their retention of AgNPs and Ag ions differed between the two exposure conditions, and uptake and elimination kinetics of Ag significantly differed between AgNP citrate and AgNP PVP in the sequential low-dose exposure. Stable isotopes analyses indicated that the trophic levels between Chinese muddy loaches and biofilms and between river snails and biofilms were 2.37 and 2.27, respectively. The biomagnification factors (BMFs) of AgNPs and AgNO3 between Chinese muddy loaches and biofilms were significantly higher than those between river snails and biofilms under both exposure settings. The BMFs of AgNP citrate and AgNO3 between Chinese muddy loaches and biofilms were greater than those of AgNP PVP for 14 days in the single high-dose group, whereas the BMFs of AgNP PVP were greater than those of AgNP citrate and AgNO3 in the sequential low-dose group. These microcosm data suggest that AgNPs have the potential to impact on ecological receptors and food chains.

Authors+Show Affiliations

Department of Environmental Science and Environmental Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheunggu, Yongin-si, Gyeonggi-do 17104, Republic of Korea.Department of Environmental Science and Environmental Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheunggu, Yongin-si, Gyeonggi-do 17104, Republic of Korea.Department of Environmental Science and Environmental Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheunggu, Yongin-si, Gyeonggi-do 17104, Republic of Korea.Risk Assessment Division, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, 404-708, Republic of Korea.Risk Assessment Division, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, 404-708, Republic of Korea.Risk Assessment Division, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, 404-708, Republic of Korea.Department of Biological Sciences, College of Natural Sciences, Chonnam National University, 77 Yongbong-ro Bukgu, Gwangju 61186, Republic of Korea. Electronic address: dongha@chonnam.ac.kr.Department of Environmental Science and Environmental Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheunggu, Yongin-si, Gyeonggi-do 17104, Republic of Korea. Electronic address: bioclass@khu.ac.kr.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29310087

Citation

Park, Hyung-Geun, et al. "Trophic Transfer of Citrate, PVP Coated Silver Nanomaterials, and Silver Ions in a Paddy Microcosm." Environmental Pollution (Barking, Essex : 1987), vol. 235, 2018, pp. 435-445.
Park HG, Kim JI, Chang KH, et al. Trophic transfer of citrate, PVP coated silver nanomaterials, and silver ions in a paddy microcosm. Environ Pollut. 2018;235:435-445.
Park, H. G., Kim, J. I., Chang, K. H., Lee, B. C., Eom, I. C., Kim, P., Nam, D. H., & Yeo, M. K. (2018). Trophic transfer of citrate, PVP coated silver nanomaterials, and silver ions in a paddy microcosm. Environmental Pollution (Barking, Essex : 1987), 235, 435-445. https://doi.org/10.1016/j.envpol.2017.12.104
Park HG, et al. Trophic Transfer of Citrate, PVP Coated Silver Nanomaterials, and Silver Ions in a Paddy Microcosm. Environ Pollut. 2018;235:435-445. PubMed PMID: 29310087.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Trophic transfer of citrate, PVP coated silver nanomaterials, and silver ions in a paddy microcosm. AU - Park,Hyung-Geun, AU - Kim,Jung In, AU - Chang,Kwang-Hyeon, AU - Lee,Byoung-Cheun, AU - Eom,Ig-Chun, AU - Kim,Pilje, AU - Nam,Dong-Ha, AU - Yeo,Min-Kyeong, Y1 - 2018/01/05/ PY - 2017/09/02/received PY - 2017/12/19/revised PY - 2017/12/26/accepted PY - 2018/1/9/pubmed PY - 2018/5/31/medline PY - 2018/1/9/entrez KW - Biomagnification KW - Microcosm KW - Rice paddy microcosm KW - Silver nanoparticles KW - Trophic levels SP - 435 EP - 445 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 235 N2 - We used replicated paddy microcosm systems to estimate the tropic transfer of citrate-coated silver nanoparticles (AgNP citrate), polyvinylpyrrolidone (PVP)-coated AgNP (AgNP PVP), and silver ions (AgNO3) for 14 days under two exposure regimes (a single high-dose exposure; 60 μg L-1 and a sequential low-dose exposure at 1 h, 4 days and 9 days; 20 μg L-1 × 3 = 60 μg L-1). Most Ag ions from AgNO3 had dispersed in the water and precipitated partly on the sediment, whereas the two Ag NPs rapidly coagulated and precipitated on the sediment. The bioconcentration factors (BCFs) of Ag from AgNPs and AgNO3 in Chinese muddy loaches and biofilms were higher than those of river snails in both exposure conditions. These BCFs were more prominent for 14 days exposure (7.30 for Chinese muddy loach; 4.48 for biofilm) in the low-dose group than in the single high-dose group. Their retention of AgNPs and Ag ions differed between the two exposure conditions, and uptake and elimination kinetics of Ag significantly differed between AgNP citrate and AgNP PVP in the sequential low-dose exposure. Stable isotopes analyses indicated that the trophic levels between Chinese muddy loaches and biofilms and between river snails and biofilms were 2.37 and 2.27, respectively. The biomagnification factors (BMFs) of AgNPs and AgNO3 between Chinese muddy loaches and biofilms were significantly higher than those between river snails and biofilms under both exposure settings. The BMFs of AgNP citrate and AgNO3 between Chinese muddy loaches and biofilms were greater than those of AgNP PVP for 14 days in the single high-dose group, whereas the BMFs of AgNP PVP were greater than those of AgNP citrate and AgNO3 in the sequential low-dose group. These microcosm data suggest that AgNPs have the potential to impact on ecological receptors and food chains. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/29310087/Trophic_transfer_of_citrate_PVP_coated_silver_nanomaterials_and_silver_ions_in_a_paddy_microcosm_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(17)33682-5 DB - PRIME DP - Unbound Medicine ER -