Preparation of Fluorescent Thiol Group-Functionalized Silica Microspheres for the Detection and Removal of Silver Ions in Aqueous Solutions

2018 ◽  
Vol 65 (5) ◽  
pp. 591-596 ◽  
Author(s):  
Qihui Shen ◽  
Man Liu ◽  
Dongdong Yu ◽  
Hanliang Gao ◽  
Yan Liu ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Silver Ions ◽  
Thiol Group ◽  
Functionalized Silica ◽  
Silica Microspheres

scholarly journals Silver Nanoparticles Stimulates Spermatogenesis Impairments and Hematological Alterations in Testis and Epididymis of Male Rats

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1063 ◽  
Author(s):  
Janet Olayemi Olugbodi ◽  
Oladipupo David ◽  
Ene Naomi Oketa ◽  
Bashir Lawal ◽  
Bamidele Joseph Okoli ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Hematological Parameters ◽  
Silver Ions ◽  
Thiol Group ◽  
Sperm Parameters ◽  
Male Rats ◽  
Ag Nps ◽  
Hematological Indices ◽  
Electron Microscopies ◽  
Pharmaceutical Application

The potential pharmaceutical application of nanoparticles has led to the toxicity within the male reproductive system. In the present study, the effects of silver nanoparticles (Ag-NPs) on hematological parameters, free radical generation, antioxidant system, sperm parameters, and organ histo-morphometry in male rats were investigated. Ag-NPs were produced by the reduction of silver ions, while the formation of which was monitored by UV–visible spectrophotometry. Zeta potential, transmission, and scanning electron microscopies were applied for the characterization of AgNPs. A total of 30 rats were divided into 6 groups and were sub-dermally exposed to Ag-NPs at the dosage of 0 (control), 10, and 50 mg/kg bodyweight (bw) doses for either 7 or 28 days. Ag-NP administration altered hematological indices and caused dose-dependent decreases in sperm motility, velocity, kinematic parameters, concentrations of luteinizing hormone, follicle-stimulating hormone, and testosterone. In the epididymis and testis, the concentrations of malondialdehyde and peroxide increases while superoxide dismutase, catalase, reduced glutathione, and total thiol group decreases. These findings suggest that Ag-NP triggered hormonal imbalance and induce oxidative stress in testis and epididymis; which negatively affect sperm parameters of male rats.

Thiol-functionalized silica microspheres for online preconcentration and determination of mercury species in seawater by high performance liquid chromatography and inductively coupled plasma mass spectrometry

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19082-19090 ◽  
Author(s):  
Heyong Cheng ◽  
Chunling Wu ◽  
Jinhua Liu ◽  
Zigang Xu
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Mercury Species ◽  
Functionalized Silica ◽  
Silica Microspheres ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Liquid Chromatographic

Thiol-functionalized silica microspheres were synthesized from aminosilica for online mercury preconcentration, followed by high performance liquid chromatographic separation and inductively coupled plasma mass spectrometry detection.

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