Silver Nanoparticles: Transport and Fate in the Environment

2018 ◽  
Vol 2 (08) ◽  
Author(s):  
Kayla Dean ◽  
Felicia Jefferson
Keyword(s):  
Silver Nanoparticles ◽  
Consumer Products ◽  
Engineered Nanoparticles ◽  
Practical Application ◽  
Potential Toxicity ◽  
Current State ◽  
History Analysis ◽  
Potential Risks ◽  
Analytical Tools ◽  
The Impact

Within the previous few years major advances in the development of nanotechnologies and practical application of artificial nanoparticles (NPs) and nanomaterials (NMs) have resulted. As society becomes further aware that the use of nanomaterials is ever growing in consumer products and their presence in the environment, critical interest on the impact of this emerging technology has grown. A major concern is whether the unknown risks of engineered nanoparticles, in particular, their impact on health and environment, outweighs their established benefits to society. The goal is to evaluate their potential toxicity in the environment. Silver nanoparticles exhibit an important effect on microbial processes in environmental exposures. This study provides a brief review over the current state-of-knowledge about AgNPs from various studies in this area, including the history, analysis, source, transport, fate, and potential risks of AgNPs. In order to fully investigate the transport and fate of AgNPs in the environment, appropriate methods for the pre-concentration, separation, and speciation of AgNPs should be developed, and analytical tools for the characterization and detection of AgNPs in complicated environmental studies must be incorporated.

Silver Nanoparticles: Transport and Fate in the Environment

2018 ◽  
Vol 2 (10) ◽  
Author(s):  
Kayla Dean ◽  
Felicia Jefferson
Keyword(s):  
Silver Nanoparticles ◽  
Consumer Products ◽  
Engineered Nanoparticles ◽  
Practical Application ◽  
Potential Toxicity ◽  
Current State ◽  
History Analysis ◽  
Potential Risks ◽  
Analytical Tools ◽  
The Impact

Within the previous few years major advances in the development of nanotechnologies and practical application of artificial nanoparticles (NPs) and nanomaterials (NMs) have resulted. As society becomes further aware that the use of nanomaterials is ever growing in consumer products and their presence in the environment, critical interest on the impact of this emerging technology has grown. A major concern is whether the unknown risks of engineered nanoparticles, in particular, their impact on health and environment, outweighs their established benefits to society. The goal is to evaluate their potential toxicity in the environment. Silver nanoparticles exhibit an important effect on microbial processes in environmental exposures. This study provides a brief review over the current state-of-knowledge about AgNPs from various studies in this area, including the history, analysis, source, transport, fate, and potential risks of AgNPs. In order to fully investigate the transport and fate of AgNPs in the environment, appropriate methods for the pre-concentration, separation, and speciation of AgNPs should be developed, and analytical tools for the characterization and detection of AgNPs in complicated environmental studies must be incorporated.

scholarly journals Use of aminothiophenol as an indicator for the analysis of silver nanoparticles in consumer products by surface-enhanced Raman spectroscopy

The Analyst ◽  
2016 ◽  
Vol 141 (18) ◽  
pp. 5382-5389 ◽  
Author(s):  
Trang H. D. Nguyen ◽  
Peng Zhou ◽  
Azlin Mustapha ◽  
Mengshi Lin
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Consumer Products ◽  
Engineered Nanoparticles ◽  
Ag Nps ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Silver nanoparticles (Ag NPs) are one of the top five engineered nanoparticles that have been used in various products.

scholarly journals ČEZMEJNO IZOBRAŽEVANJE IN TVEGANJA ZA NACIONALNO VARNOST

2012 ◽  
pp. 87-100
Author(s):  
VALENTINA JOŠT LEŠER
Keyword(s):  
National Security ◽  
Strategic Performance ◽  
Secondary Sources ◽  
Legal Documents ◽  
Cross Border ◽  
Internet Resources ◽  
Current State ◽  
Key Points ◽  
Potential Risks ◽  
The Impact

Prispevek predstavlja kritično razmišljanje o internacionalizaciji visokega šolstva oziroma o njenem najbolj hitro naraščajočem in razvijajočem delu – čezmejnem izobraževanju in pregledu nad tveganji, ki so povezana z omenjenim pojavom v kontekstu vpliva na nacionalno varnost. Uporabili smo deskriptivno metodo, zlasti pri konceptualizaciji ključnih pojmov, in analizo vsebine primarnih in sekundar- nih virov, pri čemer smo podatke dobili iz domače in tuje strokovne literature, in- ternetnih virov in pravnih dokumentov. Nacionalne vladne politike pomembno vplivajo na proces in izide čezmejnega izobraževanja, zato je za strateško delovanje in napoved trendov bistven pregled nad trenutnim stanjem in morebitnimi tveganji (neokolonializem, beg možganov in korupcija). Ugotavljamo, da je z vidika zagota- vljanja gospodarske konkurenčnosti in posledično nacionalne varnosti posameznih držav nujno potrebna identifikacija trenutnega stanja in analiza pomena trendov na področju čezmejnega izobraževanja. The paper provides a critical reflection on the internationalization of higher education, more specifically of its most rapidly growing and evolving part – cross border education, as well as presents an overview of the risks associated with the above phenomenon in the context of the impact on national security. For the purposes of the paper we have used the descriptive method, especially in conceptualizing key points, and analysis of the primary and secondary sources content was done, where the data was drawn from the domestic and foreign literature, internet resources, and legal documents. National government policies have a significant impact on the process and outcomes of the cross-border education. Strategic performance and trend forecast are thus essential for an overview of the current situation and potential risks (neo-colonialism, brain drain and corruption). We have found that in terms of ensuring the economic competitiveness and, consequently, the national security of individual countries an identification of the current state and the analysis of trend importance in cross border education is needed.

Silver Nanoparticles: Neurotoxic and Neurodegenerative Effects

2018 ◽  
Vol 2 (10) ◽  
Author(s):  
Kayla Dean ◽  
Felicia Jefferson
Keyword(s):  
Silver Nanoparticles ◽  
Colloidal Particles ◽  
Consumer Products ◽  
Practical Application ◽  
Ag Nps ◽  
Silver Nanomaterials ◽  
Extended Interaction ◽  
Neurological Effects ◽  
Significant Attention

With advances in the development of nanotechnology and increases in the production and practical application of artificial nanoparticles (NPs) and nanomaterials (NMs), health effects of these products are increasingly of interest. Among the most prominent NMs, one variant that has garnered significant attention is silver nanoparticles. Silver nanoparticles (Ag-NPs) are small metallic colloidal particles that are widely used in the engineering, manufacturing, and biomedicine sectors. Today there are many consumer products that contain various silver nanoparticles, particularly for their anti-microbial properties, yet its impact on health has not adequately been evaluated. Early studies show silver nanoparticles contribute to neurotoxic and neurodegenerative effects in vivo. This paper evaluates not only the benefits of silver nanoparticles but the adverse consequences that humans and other organisms may face during extended interaction with silver nanomaterials. Given the particles cross the blood-brain barrier (BBB), specific attention has been placed on the neurological effects of silver nanoparticles. Given the urgency for more information and scientific evaluation on the increasing use of silver nanoparticles, there is still a need for more efficient experimentation methods in the testing of silver nanoparticle toxicity and brain and behavioral effects.

scholarly journals A Review on the Impact of Silver Nanoparticles on Soil Microorganisms and Bioremediation as Heavy Metal Removal Technology

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Hartati Oktarina ◽  
Teuku Mukhriza
Keyword(s):  
Heavy Metals ◽  
Silver Nanoparticles ◽  
Soil Microorganisms ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Crop Productivity ◽  
Consumer Products ◽  
Microbial Composition ◽  
Biological Technique ◽  
The Impact

The increasing and varied use of silver nanoparticles (AgNPs) as antimicrobial on consumer products increases the risk of the nanomaterial release into the environment and potentially harm beneficial microorganisms in soil. Any change in soil microbial composition will lead to soil quality degradation that eventually reduce crop productivity. The negative effect of AgNPs on soil microorganism has been reported by researchers. There are technologies employed to remove heavy metals from soil such as chemical, physical, and biological technique. However, chemical and physical techniques have some disadvantages e.g high cost and partial removal. Therefore, biological technique including the use of microorganisms (bioremediation) become more favourable. The technique is considered as cost effectiveness and environmentally sustainable method. The present paper summarizes the impact of AgNPs on soil microorganisms and the use of microorganisms (bacteria, fungi, algae, and yeast) to eliminate heavy metals pollution in soil.

Silver Nanoparticles: Neurotoxic and Neurodegenerative Effects

2018 ◽  
Vol 2 (08) ◽  
Author(s):  
Kayla Dean ◽  
Felicia Jefferson
Keyword(s):  
Silver Nanoparticles ◽  
Colloidal Particles ◽  
Consumer Products ◽  
Practical Application ◽  
Ag Nps ◽  
Silver Nanomaterials ◽  
Extended Interaction ◽  
Neurological Effects ◽  
Significant Attention

With advances in the development of nanotechnology and increases in the production and practical application of artificial nanoparticles (NPs) and nanomaterials (NMs), health effects of these products are increasingly of interest. Among the most prominent NMs, one variant that has garnered significant attention is silver nanoparticles. Silver nanoparticles (Ag-NPs) are small metallic colloidal particles that are widely used in the engineering, manufacturing, and biomedicine sectors. Today there are many consumer products that contain various silver nanoparticles, particularly for their anti-microbial properties, yet its impact on health has not adequately been evaluated. Early studies show silver nanoparticles contribute to neurotoxic and neurodegenerative effects in vivo. This paper evaluates not only the benefits of silver nanoparticles but the adverse consequences that humans and other organisms may face during extended interaction with silver nanomaterials. Given the particles cross the blood-brain barrier (BBB), specific attention has been placed on the neurological effects of silver nanoparticles. Given the urgency for more information and scientific evaluation on the increasing use of silver nanoparticles, there is still a need for more efficient experimentation methods in the testing of silver nanoparticle toxicity and brain and behavioral effects.

scholarly journals Research of the regularities of obtaining silver nanoparticles with applying of polyvinylpyrolidone and their effect on composite’s fungibactericidal properties

2021 ◽  
Vol 4 (1) ◽  
pp. 237-242
Author(s):  
Н. D. Dudok ◽  
◽  
N. B. Semenyuk ◽  
T. V. Skorokhoda ◽  
Yu. Ya. Melnyk ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antimicrobial Properties ◽  
Silver Ions ◽  
Reduction Reaction ◽  
Reducing Agent ◽  
Practical Application ◽  
Technological Factors ◽  
Porous Blocks ◽  
The Impact ◽  
Kinetics Of

The influence of technological factors on the regularities of obtaining silver nanoparticles using polyvinylpyrrolidone as reducing agent has been researched and its influence in compositions content on antimicrobial properties of last ones have been defined. The impact of temperature and polyvinylpyrrolidone content as well as Ag+ concentration on the kinetics of the reduction reaction of silver ions was determined. Silver-containing composites in the form of porous blocks and films were synthesized and their bactericidal and fungicidal properties were studied. The possibility of practical application of composites in biomedical area in the processes of osteogenesis has been confirmed.

Bioaccumulation of silver nanoparticles in model wastewater biofilms

2018 ◽  
Vol 4 (8) ◽  
pp. 1163-1171 ◽  
Author(s):  
C. Walden ◽  
W. Zhang
Keyword(s):  
Silver Nanoparticles ◽  
Consumer Products ◽  
Engineered Nanoparticles

Engineered nanoparticles are increasingly incorporated into consumer products and inevitably released into wastewater.

The Development of Agritourism in the Podkarpackie Voivodeship in the Light of International and National Conditions

2017 ◽  
Vol 13 ◽  
pp. 244-261
Author(s):  
Mariola Tracz ◽  
Małgorzata Bajgier-Kowalska ◽  
Radosław Uliszak
Keyword(s):  
Development Strategy ◽  
Current State ◽  
Central Statistical ◽  
Central Statistical Office ◽  
Tourism Resources ◽  
The One ◽  
The Impact ◽  
District Offices ◽  
Socio Economic Factors

Podkarpackie Voivodeship is one of the regions of Poland in which the number of agritourism entities is very high. Therefore tourism plays a significant role in its development strategy. The aim of the paper is to identify the current state of agritourism and the changes that have occurred in the region in the years 2000–2016. Specific objectives are to determine the distribution of agritourism farms and their offer, together with a comprehensive analysis of the environmental and socio-economic factors, as well as the impact of the Slovak-Ukrainian border. The report was developed on the statistical materials from the Polish Central Statistical Office, Podkarpackie Agricultural Advisory Centre in Boguchwała and data collected from municipalities and district offices that is published on their websites, as well as through interviews with 100 owners of agritourism farms in the Podkarpackie Voivodeship. The research has shown, on the one hand, the decline in the number of farms in the region and, on the other hand, the increase in the diversity of the tourist offer of these entities. Distribution of agritourism farms is closely linked to the attractiveness of natural environment and quality of secondary tourism resources. Traditional agritourism has not yet fully used its countryside, as well as cross-border advantages of its location.

Curcumin-containing Silver Nanoparticles prevent carbon tetrachlorideinduced hepatotoxicity in mice

2020 ◽  
Vol 23 ◽  
Author(s):  
Hossam Ebaid ◽  
Mohamed Habila ◽  
Iftekhar Hassan ◽  
Jameel Al-Tamimi ◽  
Mohamed S. Omar ◽  
...  
Keyword(s):  
Dna Damage ◽  
Silver Nanoparticles ◽  
Nuclear Dna ◽  
Liquid Paraffin ◽  
Tail Length ◽  
Hepatic Tissue ◽  
Tissue Destruction ◽  
Group 2 ◽  
The Impact

Background: Hepatotoxicity remains an important clinical challenge. Hepatotoxicity observed in response to toxins and hazardous chemicals may be alleviated by delivery of the curcumin in silver nanoparticles (AgNPs-curcumin). In this study, we examined the impact of AgNPs-curcumin in a mouse model of carbon tetrachloride (CCl4)-induced hepatic injury. Methods: Male C57BL/6 mice were divided into three groups (n=8 per group). Mice in group 1 were treated with vehicle control alone, while mice in Group 2 received a single intraperitoneal injection of 1 ml/kg CCl4 in liquid paraffin (1:1 v/v). Mice in group 3 were treated with 2.5 mg/kg AgNPs-curcumin twice per week for three weeks after the CCl4 challenge. Results: Administration of CCL4 resulted in oxidative dysregulation, including significant reductions in reduced glutathione and concomitant elevations in the level of malondialdehyde (MDA). CCL4 challenge also resulted in elevated levels of serum aspartate transaminase (AST) and alanine transaminase (ALT); these findings were associated with the destruction of hepatic tissues. Treatment with AgNPs-curcumin prevented oxidative imbalance, hepatic dysfunction, and tissue destruction. A comet assay revealed that CCl4 challenge resulted in significant DNA damage as documented by a 70% increase in nuclear DNA tail-length; treatment with AgNPs-curcumin inhibited the CCL4-mediated increase in nuclear DNA tail-length by 34%. Conclusion: Administration of AgNPs-curcumin resulted in significant antioxidant activity in vivo. This agent has the potential to prevent the hepatic tissue destruction and DNA damage that results from direct exposure to CCL4.

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