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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.12
- 수록면
- 25 - 31 (7page)
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초록· 키워드
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Objectives In this study, we investigated the influence of ionic strength and natural organic matter (NOM) on aggregation and soil adsorption of citrate-coated silver nanoparticles (AgNPs).
Methods Time-resolved dynamic light scattering measurements and batch adsorption experiments were used to study their aggregation and soil adsorption behaviors, respectively.
Results The aggregation rate of AgNPs increased with increasing ionic strength and decreasing NOM concentration. At higher ionic strength, the AgNPs were unstable, and thus tended to be adsorbed to the soil, while increased NOM concentration hindered soil adsorption. To understand the varying behaviors of AgNPs depending on the environmental factors, particle zeta potentials were also measured as a function of ionic strength and NOM concentration. The magnitude of particle zeta potential became more negative with decreasing ionic strength and increasing NOM concentration. These results imply that the aggregation and soil adsorption behavior of AgNPs were mainly controlled by electrical double-layer repulsion consistent with the Derjaguin-Landau-Verwey-Overbeek theory.
Conclusions This study found that the aggregation and soil adsorption behavior of AgNPs are closely associated with environmental factors such as ionic strength and NOM and suggested that assessing the environmental fate and transport of nanoparticles requires a thorough understanding of particle-particle interaction mechanisms.
Methods Time-resolved dynamic light scattering measurements and batch adsorption experiments were used to study their aggregation and soil adsorption behaviors, respectively.
Results The aggregation rate of AgNPs increased with increasing ionic strength and decreasing NOM concentration. At higher ionic strength, the AgNPs were unstable, and thus tended to be adsorbed to the soil, while increased NOM concentration hindered soil adsorption. To understand the varying behaviors of AgNPs depending on the environmental factors, particle zeta potentials were also measured as a function of ionic strength and NOM concentration. The magnitude of particle zeta potential became more negative with decreasing ionic strength and increasing NOM concentration. These results imply that the aggregation and soil adsorption behavior of AgNPs were mainly controlled by electrical double-layer repulsion consistent with the Derjaguin-Landau-Verwey-Overbeek theory.
Conclusions This study found that the aggregation and soil adsorption behavior of AgNPs are closely associated with environmental factors such as ionic strength and NOM and suggested that assessing the environmental fate and transport of nanoparticles requires a thorough understanding of particle-particle interaction mechanisms.
목차
Introduction
Materials and Methods
Results
Discussion
References
참고문헌 (24)
참고문헌 신청
Niemeyer CM / 2001 / Nanoparticles, proteins, and nucleic acids: biotech-nology meets materials science / Angew Chem Int Ed 40(22):4128~4158
황인석 / 2011 / 은나노 입자의 항균작용과 작용기작 / 한국미생물·생명공학회지 39(1):1~8
Whiteley CM / 2011 / Challenges in assessing the environmental fate and exposure of nano silver / J Phys Conf Ser
Project on Emerging Nanotechnologies / An inventory of nanotechnology- based consumer products currently on the market
Benn TM / 2008 / Nanoparticle silver released into water from commercially available sock fabrics / Environ Sci Technol 42(11):4133~4139
황인석 / 2011 / 은나노 입자의 항균작용과 작용기작 / 한국미생물·생명공학회지 39(1):1~8
Whiteley CM / 2011 / Challenges in assessing the environmental fate and exposure of nano silver / J Phys Conf Ser
Project on Emerging Nanotechnologies / An inventory of nanotechnology- based consumer products currently on the market
Benn TM / 2008 / Nanoparticle silver released into water from commercially available sock fabrics / Environ Sci Technol 42(11):4133~4139
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UCI(KEPA) : I410-ECN-0101-2015-530-001447574