Results 1 to 10 of about 666 (170)

Improved precision in As speciation analysis with HERFD-XANES at the As K-edge: the case of As speciation in mine waste [PDF]

Journal of Synchrotron Radiation, 2022
High-energy-resolution fluorescence-detected (HERFD) X-ray absorption near-edge spectroscopy (XANES) is a spectroscopic method that allows for increased spectral feature resolution, and greater selectivity to decrease complex matrix effects compared with
Emily M. Saurette, Y. Zou Frinfrock, Brent Verbuyst, David W. Blowes, Joyce M. McBeth, Carol J. Ptacek   +5 more
doaj   +3 more sources

Mechanistic Study on Orpiment Pigment Discoloration Induced by Reactive Oxygen Species [PDF]

Molecules
Orpiment (As2S3), a yellow mineral pigment widely used in historical artworks, undergoes degradation that seriously threatens the integrity of Dunhuang murals.
Haixia Zhang, Wenyuan Zhang, Xiaofen Chen   +2 more
exaly   +4 more sources

A deep-sea hydrothermal vent worm detoxifies arsenic and sulfur by intracellular biomineralization of orpiment (As2S3). [PDF]

PLoS Biology
The alvinellid worm Paralvinella hessleri is the only animal that colonizes the hottest part of deep-sea hydrothermal vents in the west pacific. We found P.
Hao Wang, Lei Cao, Huan Zhang, Zhaoshan Zhong, Li Zhou, Chao Lian, Xiaocheng Wang, Hao Chen, Minxiao Wang, Xin Zhang, Chaolun Li   +10 more
doaj   +2 more sources

Critical evaluations of different aspects involved in preparation of Hartala bhasma

International Journal of Ayurveda Research, 2023
Arsenic trisulfide, known as Hartala (~Orpiment), is being used as medicine since the time of Hippocrates. However, the use of arsenicals in modern medicine is constrained due to toxicology concerns. Ayurveda has used orpiment as medicine since 2000 B.C.
Piyush Krantikumar Gandhi, Rajesh Kundlikrao Ingole   +1 more
doaj   +1 more source

Tutankhamun’s Polychrome Wooden Shawabtis: Preliminary Investigation for Pigments and Gilding Characterization and Indirect Dating of Previous Restorations by the Combined Use of Imaging and Spectroscopic Techniques

Open Archaeology, 2022
To the best of our knowledge, such a detailed study on polychrome wooden shawabtis of King Tutankhamun (18th Dynasty in ancient Egypt) has not been reported in the literature, so the purpose of our study is to noninvasively identify the polychrome layers
Abdrabou Ahmed, Abdallah Medhat, Sultan Gilan M., Mostafa Mohamed, Bayoumi Hind, Magdy Ramy, Abd El Kader Mohamed A., Hamza Nagmeldeen M., Mamdouh Dina, Elsayed Hassan M., Abbas Eltayeb, Kamal Hussein M.   +11 more
doaj   +1 more source

Kinetics and mechanism of arsenic sulfides oxidation [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2009
The kinetics of oxidation process of realgar and orpiment natural mineral mixture was studied under non-isothermal conditions. The proposed reaction mechanism and chemical transformation investigated by SEM-EDX, XRD and thermal analysis, are discussed ...
Štrbac N., Mihajlović I., Minić D., Živković D., Živković Ž.   +4 more
doaj   +1 more source

Elastic, Mechanical, and Phonon Behavior of Orpiment Arsenic Trisulfide under Pressure

International Journal of Photoenergy, 2020
Arsenic trisulfide (As2S3) has been found to be an excellent glass former at high temperature and pressure. However, there is still some scarcity for the elastic and phonon behavior of the orpiment phase. By using the Dreiding force field of the geometry
Liwu Jiang, Meiling Wu, Peng Shi, Chuanhui Zhang   +3 more
doaj   +1 more source

Revisiting some overlooked registered Thai traditional medicine preparations: an alert to a regulatory affair

Bulletin of the National Research Centre, 2022
Objective This study evaluated the heavy metal identity and content of registered Thai Traditional medicine (TTM) preparations in Thailand to ensure consumer safety. Methods Both qualitative and quantitative information about the elemental composition of
Sornkanok Vimolmangkang, Dolly Rani, Naruemon Prestwong, Chayanis Sutcharitchan, Duangkamol Pakdeesattayapong   +4 more
doaj   +1 more source

PAINTING MATERIALS INVESTIGATION FROM DRAGU WOODEN CHURCH, SALAJ COUNTY

Studia Universitatis Babes-Bolyai Chemia, 2021
The old wooden church from Dragu, Sălaj County, was built on the hill of Dragu village between 1806 and 1809, according to the inscription found inside. The investigations targeted the imperial gates (the main entry from the nave to the altar used by the
Victor Constantin MARUTOIU, Ioan BRATU, Olivia Florena NEMES, Constantin MARUTOIU   +3 more
doaj   +1 more source

Comparative pharmaceutico analytical study of Haratala (orpiment) Shodhana (purification) using different Shodhana media

BLDE University Journal of Health Sciences, 2022
INTRODUCTION: Haratala is Uprasa mentioned since vedic period. Chemically, it is Arsenic trisulfide and also classified under schedule E1 drug. There are methods and medias used for Shodhana of Haratala.
Krupali Shailesh Jani, Prashant Bedarkar, Vinay J Shukla, Biswajyoti Patgiri   +3 more
doaj   +1 more source