The Toxicity of Nonaged and Aged Coated Silver Nanoparticles to Freshwater Alga Raphidocelis subcapitata

2019 ◽  
Vol 38 (11) ◽  
pp. 2371-2382
Author(s):  
Sam Lekamge ◽  
Ana F. Miranda ◽  
Charlene Trestrail ◽  
Ben Pham ◽  
Andrew S. Ball ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Freshwater Alga ◽  
Raphidocelis Subcapitata

scholarly journals Aquatic Toxicity Comparison of Silver Nanoparticles and Silver Nanowires

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Eun Kyung Sohn ◽  
Seyed Ali Johari ◽  
Tae Gyu Kim ◽  
Jin Kwon Kim ◽  
Ellen Kim ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Daphnia Magna ◽  
Silver Nanowires ◽  
Aquatic Toxicity ◽  
Oryzias Latipes ◽  
Aquatic Environments ◽  
Silver Nanomaterials ◽  
Raphidocelis Subcapitata ◽  
Test Organisms ◽  
Test Fish

To better understand the potential ecotoxicological impact of silver nanoparticles (AgNPs) and silver nanowires (AgNWs) released into freshwater environments, the toxicities of these nanomaterials were assessed and compared using Organization for Economic Cooperation and Development (OECD) test guidelines, including a “Daphniasp., acute immobilization test,” “Fish, acute toxicity test,” and “freshwater alga and cyanobacteria, growth inhibition test.” Based on the estimated median lethal/effective concentrations of AgNPs and AgNWs, the susceptibility to the nanomaterials was different among test organisms (daphnia > algae > fish), suggesting that the AgNPs are classified as “category acute 1” forDaphnia magna, “category acute 2” forOryzias latipes, and “category acute 1” forRaphidocelis subcapitata, while the AgNWs are classified as “category acute 1” forDaphnia magna, “category acute 2” forOryzias latipes, and “category acute 2” forRaphidocelis subcapitata, according to the GHS (Globally Harmonized System of Classification and Labelling of Chemicals). In conclusion, the present results suggest that more attention should be paid to prevent the accidental or intentional release of silver nanomaterials into freshwater aquatic environments.

scholarly journals Combined effects of nanoplastics and copper on the freshwater alga Raphidocelis subcapitata

2019 ◽  
Vol 210 ◽  
pp. 179-187 ◽  
Author(s):  
A. Bellingeri ◽  
E. Bergami ◽  
G. Grassi ◽  
C. Faleri ◽  
P. Redondo-Hasselerharm ◽  
...  
Keyword(s):  
Freshwater Alga ◽  
Combined Effects ◽  
Raphidocelis Subcapitata

scholarly journals The toxicity of coated silver nanoparticles to Daphnia carinata and trophic transfer from alga Raphidocelis subcapitata

PLoS ONE ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. e0214398 ◽  
Author(s):  
Sam Lekamge ◽  
Ana F. Miranda ◽  
Andrew S. Ball ◽  
Ravi Shukla ◽  
Dayanthi Nugegoda
Keyword(s):  
Silver Nanoparticles ◽  
Trophic Transfer ◽  
Daphnia Carinata ◽  
Raphidocelis Subcapitata

scholarly journals The toxicity of coated silver nanoparticles to the alga Raphidocelis subcapitata

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Sam Lekamge ◽  
Ana F. Miranda ◽  
Amanda Abraham ◽  
Andrew S. Ball ◽  
Ravi Shukla ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Raphidocelis Subcapitata

Synthesis, performance and growth mechanism of silver nanoparticle coated SERS fiber probe

2019 ◽  
Vol 107 (3) ◽  
pp. 305
Author(s):  
Mengmei Geng ◽  
Yuting Long ◽  
Tongqing Liu ◽  
Zijuan Du ◽  
Hong Li ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Absorption Spectrum ◽  
Reaction Time ◽  
Growth Mechanism ◽  
Fiber Optic ◽  
Fiber Optic Probe ◽  
Visible Absorption ◽  
Fiber Probe ◽  
Surface Enhanced Raman ◽  
Optic Probe

Surface-enhanced Raman Scattering (SERS) fiber probe provides abundant interaction area between light and materials, permits detection within limited space and is especially useful for remote or in situ detection. A silver decorated SERS fiber optic probe was prepared by hydrothermal method. This method manages to accomplish the growth of silver nanoparticles and its adherence on fiber optic tip within one step, simplifying the synthetic procedure. The effects of reaction time on phase composition, surface plasmon resonance property and morphology were investigated by X-ray diffraction analysis (XRD), ultraviolet-visible absorption spectrum (UV-VIS absorption spectrum) and scanning electron microscope (SEM). The results showed that when reaction time is prolonged from 4–8 hours at 180 °C, crystals size and size distribution of silver nanoparticles increase. Furthermore, the morphology, crystal size and distribution density of silver nanoparticles evolve along with reaction time. A growth mechanism based on two factors, equilibrium between nucleation and growth, and the existence of PVP, is hypothesized. The SERS fiber probe can detect rhodamin 6G (R6G) at the concentration of 10−6 M. This SERS fiber probe exhibits promising potential in organic dye and pesticide residue detection.

The Effect of Silver Nanoparticles on Blood Cells in Rats

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
S. Rezaei-Zarchi ◽  
M. Taghavi-Foumani ◽  
S. Razavi Sheshdeh ◽  
M. Negahdary ◽  
G. Rahimi
Keyword(s):  
Silver Nanoparticles ◽  
Blood Cells
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