Arsenic sulfide layers for dielectric reflection mirrors prepared from solution

2017 ◽  
Author(s):  
Vlastimil Matejec ◽  
Jitka Pedlikova ◽  
Ondrej Podrazky ◽  
Ivo Bartoň
Keyword(s):  
Arsenic Sulfide

scholarly journals Carrier-microencapsulation using Al-catecholate complex to suppress arsenopyrite oxidation: Evaluation of the coating stability under simulated weathering conditions

2019 ◽  
Vol 268 ◽  
pp. 06002 ◽  
Author(s):  
Kensuke Seno ◽  
Ilhwan Park ◽  
Carlito Tabelin ◽  
Kagehiro Magaribuchi ◽  
Mayumi Ito ◽  
...  
Keyword(s):  
Protective Coating ◽  
Sulfide Mineral ◽  
Sulfide Minerals ◽  
Low Ph ◽  
Oxidation Products ◽  
Arsenic Sulfide ◽  
Catecholate Complex ◽  
Coating Stability ◽  
The Stability

Arsenopyrite (FeAsS) is the most common primary arsenic-sulfide mineral in nature, and its oxidation causes the release of toxic arsenic (As). To mitigate these problems, carrier-microencapsulation (CME), a technique that passivates sulfide minerals by covering their surfaces with a protective coating, has been developed. In the previous study of authors on CME, Al-catecholate complex significantly suppressed arsenopyrite oxidation via electron donating effects of the complex and the formation of an Al-oxyhydroxide coating. For the application of this technique to real tailings, however, further study should be carried out to elucidate long-term effectiveness of the coating to suppress arsenopyrite oxidation. This study investigates the stability of the coating formed on arsenopyrite by Al-based CME using weathering tests. The Al-oxyhydroxide coating suppressed arsenopyrite oxidation until about 50 days of the experiment, but after this, the amounts of oxidation products like dissolved S and As increased due to the gradual dissolution of the coating with time as a result of the low pH of leachate. This suggests that co-disposal of Al-based CME-treated arsenopyrite with minerals that have appropriate neutralization potentials, so that the pH is maintained at around 5 to 8 where Al-oxyhydroxide is stable.

scholarly journals Arsenic sulfide reverses cisplatin resistance in non‐small cell lung cancer in vitro and in vivo through targeting PD‐L1

2021 ◽  
Vol 12 (19) ◽  
pp. 2551-2563
Author(s):  
Wei Tian ◽  
Yinping Sun ◽  
Yuping Cheng ◽  
Xiao Ma ◽  
Weina Du ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Small Cell Lung Cancer ◽  
Cell Lung Cancer ◽  
Cisplatin Resistance ◽  
Small Cell ◽  
Arsenic Sulfide ◽  
Small Cell Lung

Comparison of Bioleaching High Arsenic-Bearing Copper Sulphide Concentrate Using Thiobacillus Ferrooxidans and Sulfobacillus Thermosulfidooxidans

2012 ◽  
Vol 524-527 ◽  
pp. 1997-2003
Author(s):  
Hai Yun Xie ◽  
Zhuo Yue Lan ◽  
Shu Ming He ◽  
Li Kun Gao ◽  
Xiong Tong
Keyword(s):  
Thiobacillus Ferrooxidans ◽  
Arsenic Sulfide ◽  
High Concentration ◽  
Initial Concentration ◽  
Copper Concentrate ◽  
Leaching Process ◽  
Sulfobacillus Thermosulfidooxidans ◽  
Moderate Thermophile ◽  
Arsenic Copper ◽  
High Arsenic

The usage of high-arsenic sulfide copper concentrate were limited because the arsenic in the concentrate harms the qualities of copper product and pollutes the environment. In this paper an innovative process for high-arsenic copper sulfide concentrate with with bio-oxidation respectively Thiobacillus ferrooxidans and moderate thermophile Sulfobacillus thermosulfidooxidans has been studied out, and the influencing factors have been comparative studied during the leaching process, such as concentration particle size, leaching methods, pulp concentration, leaching time and the initial concentration of Fe3+, etc. Under the suitable leaching conditions, the experiments results show that the concentrate is leached 47.13% of Cu,50.09% of As and 52.46% of Fe by Thiobacillus ferrooxidans and 82.39% of Cu,78.21% of As and 40.38% of Fe by moderate thermophile Sulfobacillus thermosulfidooxidans. The high concentration initial Fe3+ has speeded leaching process up in the presence of moderate thermophile Sulfobacillus thermosulfidooxidans, and when the pulp initial concentration of Fe3+ is in the range of 0.08~0.32mol/L, the leaching rate of Cu is 86.34~97.06%, As 89.22~94.13%. It is concluded that Sulfobacillus thermosulfidooxidans have a better effect on bioleaching high-arsenic sulfide copper concentrate than Thiobacillus ferrooxidans.

Anti-liver cancer effect and the mechanism of arsenic sulfide in vitro and in vivo

2018 ◽  
Vol 83 (3) ◽  
pp. 519-530 ◽  
Author(s):  
Shudan Wang ◽  
Chao Zhang ◽  
Yumei Li ◽  
Ping Li ◽  
Dafang Zhang ◽  
...  
Keyword(s):  
Liver Cancer ◽  
Arsenic Sulfide

Enhancement of IR transparency of arsenic sulfide materials via plasma-chemical conversion of the initial arsenic monosulfide in low-temperature RF plasma

2018 ◽  
Vol 52 (1) ◽  
pp. 015203 ◽  
Author(s):  
Leonid Mochalov ◽  
Alexander Logunov ◽  
Roman Kornev ◽  
Sergey Zelentsov ◽  
Andrey Vorotyntsev ◽  
...  
Keyword(s):  
Low Temperature ◽  
Chemical Conversion ◽  
Rf Plasma ◽  
Arsenic Sulfide ◽  
Plasma Chemical

Laser‐Induced Formation of CdS Crystallites in Cd‐Doped Amorphous Arsenic Sulfide Thin Films

2018 ◽  
Vol 256 (2) ◽  
pp. 1800298 ◽  
Author(s):  
Yuriy M. Azhniuk ◽  
Dmytro Solonenko ◽  
Volodymyr M. Dzhagan ◽  
Ashutosh Mukherjee ◽  
Vasyl Y. Loya ◽  
...  
Keyword(s):  
Thin Films ◽  
Arsenic Sulfide ◽  
Cds Crystallites

scholarly journals Fabrication of Arsenic Sulfide using Thermal Treatment

2016 ◽  
Vol 9 (19) ◽  
Author(s):  
Dong Won Lee ◽  
Jung-Yeul Yun ◽  
Da-Hee Park ◽  
Jei-Pil Wang
Keyword(s):  
Thermal Treatment ◽  
Arsenic Sulfide
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