First principles study on the size evolution and stability of (AgF)  (n= 1–12) clusters

Song, Chenyu; Tian, Zhimei

doi:10.1016/j.comptc.2015.10.027

Cited by 3 publications

(1 citation statement)

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“…3). The studies of Grochala [14] and Song and Tian [15] confirmed the existence of AgF 3 . We postulate that the AgF 3 were formed in situ during the transportation process into the sewer system through (bio) chemical reactions involving Ag + and F -, but further investigations are needed to explicitly elucidate the underlying mechanisms.…”

Section: The Composition Of Anions In Samples and Formation Of Silvermentioning

confidence: 83%

Assessment of Silver Metal Released Into Wastewater After Using a Silver Deodorant

Modika

Matsheketsheke

Gumbo

2018

WIT Transactions on Ecology and the Environment

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The purpose of the research was to assess availability of silver based deodorant and to assess the levels of nanosilver particles that are released into bathwater. A survey was conducted to assess the availability and affordability of silver based deodorants in Thohoyandou and Louis Trichardt. The survey studies showed that the silver based deodorants are available in commercial stores and pharmacies. The price range was from R16.99 to R25.00. Nivea silver protect deodorant was applied to the body. In Louis Trichardt town, the wastewater samples were collected just below the shower head (SH) and just before entry to sewer system (SS) and then filtered through a membrane filter (0.45 µm) and through a Whatman filter paper. The residue on the Whatman filter paper was then acid digested and then analyzed for silver content. Two analytical methods, atomic absorption spectroscopy (AAS) and inductively coupled plasma optical emission spectroscopy (ICP OES) were used for the analysis of the silver content. The AAS results showed that municipal water, bath water at SH and SS was zero and the Nivea silver protect deodorant was 0.5 ± 0.0 ppm. The ICP OES results showed that the silver content of the municipal water was <0.005 ppm and the Nivea silver protect deodorant was 0.3 ppm. The bath water at SH and SS, the ICP OES, showed that the silver content was <0.005 ppm. However the acid digested residue showed that the silver content was 0.01 ppm at 2 metres and <0.005 ppm for 0 metres. The ion chromatographic analysis indicated that the municipal water had trace levels of fluoride (F) ions, SH had 6.01 ppm of F, SS had 3.25 ppm of F and the soap A had 2.10 ppm of F. The retained residue was established to be silver trifluoride (AgF3) with the use X-ray diffraction technique. Thus, the silver nanoparticles are a potential hazard to the microbial community resident at municipal sewage treatment plant and aquatic ecosystem.

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Section: The Composition Of Anions In Samples and Formation Of Silvermentioning

confidence: 83%