tailieunhanh - Chronic effects of silver nanoparticles on micro crustacean Daphnia lumholtzi

This study aimed to enhance our insight on the potential toxicological effects of silver nanoparticles (AgNPs) into the aquatic environment. To investigate the chronic toxicity of nanoparticles, freshwater micro-crustacean Daphnia lumholtzi was exposed to different concentrations of , µg/l AgNPs, and control, for 21 days. | Chronic effects of silver nanoparticles on micro crustacean Daphnia lumholtzi VNU Journal of Science Natural Sciences and Technology Vol. 36 No. 2 2020 54-61 Original Article Chronic Effects of Silver Nanoparticles on Micro-Crustacean Daphnia lumholtzi Tran Thanh Thai1 Pham Thanh Luu1 2 Ngo Xuan Quang1 2 Dao Thanh Son3 1 Institute of Tropical Biology Vietnam Academy of Science and Technology 85 Tran Quoc Toan District 3 Ho Chi Minh Vietnam 2 Graduate University of Science and Technology Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Cau Giay Hanoi Vietnam 3 Hochiminh City University of Technology Vietnam National University-Hochiminh City 268 Ly Thuong Kiet District 10 Ho Chi Minh Vietnam Received 19 October 2019 Revised 31 January 2020 Accepted 27 February 2020 Abstract This study aimed to enhance our insight on the potential toxicological effects of silver nanoparticles AgNPs into the aquatic environment. To investigate the chronic toxicity of nanoparticles freshwater micro-crustacean Daphnia lumholtzi was exposed to different concentrations of µg l AgNPs and control for 21 days. Toxicological endpoints at different growing stages such as the maturation and reproduction were recorded. The reproduction rate of D. lumholtzi exposed to both AgNPs concentrations and µg l was significantly lower than that of control. In turn the maturation exposed to both AgNPs concentrations was not significantly different from the control treatment. This result indicates that AgNPs with a concentration lower than µg l did not have an adverse effect on the maturation of D. lumholtzi but AgNPs with a concentration higher than caused a toxic effect on the reproduction rate of D. lumholtzi during 21 days of the exposure period. In conclusion the present results showed that AgNPs have toxic effects on D. lumholtzi and it has the potential to use as good freshwater aquatic zooplankton for assessment on the toxicity of nanomaterials in tropics. The .

• Hoá học
• Bootstrap method
• Chronic test
• Daphnia lumholtzi
• Ecological toxicology
• Silver nanoparticles
• BMC Bioinformatics
• Molecular dynamics
• Proteins undergo
• Numerous standard techniques
• Recurrence quantification analysis
• Structural equation modeling
• Tax consulting service
• Con firmatory Factor Analysis
• Pricewaterhouse Coopers
• Biosynthesis and characterization
• Characterization of silver nanoparticles
• Silver nanoparticles
• Confirmed the synthesis of AgNPs
• Journal of Chemistry
• Fabrication of silver nanoparticles embedded polymer masterbatchs
• Excellent antibacterial performance
• Silver nanoparticles embedded polymer masterbatchs
• The silver nanoparticlesembedded polyethylene
• Gram negative Escherichia Coli
• Physiochemical properties
• Silver nanoparticles induced cytotoxicity
• Physicochemical properties
• Aggregation interaction
• Acinetobacter indicus
• Biomedical applications
• Biogenic synthesis
• Silver nanoparticles mediated
• Antimicrobial activity
• Pleurotus florida
• Their antimicrobial activity
• Silver nanoparticles from pleurotus florida
• Antibacterial activity
• Antibacterial activity of silver nanoparticles
• Antimicrobial agents could overcome mechanisms
• Quorum sensing
• Biosynthesised silver nanoparticles
• Achyranthes aspera
• Achyranthes aspera roots
• Maintaining different AgNO3 concentrations
• Bacillus sp DRI 6
• Biosynthesis of silver nanoparticles
• Medical sciences
• Citrus fruit peel extracts
• Synthesis of silver nanoparticles
• Different citrus fruit peel extracts
• Education research
• Antibacterial application against bacillus subtilis
• Pseudomonas aeruginosa
• Chemical synthesis
• Phaseolus vulgaris L
• Copper nanoparticles
• In vivo
• Copper nanoparticles on physiological characteristics
• Trichoderma asperellum
• Physiological effects
• Camellia sinensis L
• Seed quality parameters
• Biosynthesized silver nanoparticles
• Gymnema sylvestre
• Antimicrobial activity (Fungi and Bacteria)
• Antimicrobial activities
• Green synthesis
• Silver fused azadirachta indica nanoparticles
• Producing staphylococcus aureus
• Green conjugates of silver nanoparticles
• Turkish Journal of Chemistry
• Tạp chí Hóa học
• Colorimetric detection
• Pharmaceutical analysis
• Polyvinyl alcohol citrate stabilized silver nanoparticles
• Anticancer activity
• Native silver resistant
• Subsequent antibacterial
• Silver nano
• Rhizoctonia solani
• Pseudomonas fluorescens
• Pathogen rhizoctonia solani kuhn
• Biogenic silver nanoparticles against rice
• Silver nanoparticle
• Phyllosphere associated bacterial strain
• Biogenic synthesis of silver nanoparticles
• BMC Chemistry
• Supported polysaccharide
• Silver sulfide
• Organic matter
• N–lauroylsarcosinate
• Lemongrass leaf
• Plant extract
• AgNO3 solution
• Al2O3 supported silver nanoparticles
• Thermal emission coefficient
• Physical method
• High antimicrobial activity
• Bonding capability
• Biogenic production
• Synthesis of metal nanoparticles
• Gram negative bacteria
• Geobacter sulfurreducens
• Nanoparticles synthesized
• Cinnamomum cassia
• Biological systems
• Sprague Dawley rats
• Surface enhanced raman scattering
• A layer of silver nanoparticles
• The metal nanoparticles synthesized
• Prepare SERS substrate