Results 141 to 150 of about 1,731 (192)
Dissolution of realgar by Acidithiobacillus ferrooxidans in the presence and absence of zerovalent iron: Implications for remediation of iron-deficient realgar tailings [PDF]
Chemosphere, 2018 Realgar (As4S4)-rich tailings are iron-deficient arsenical mine wastes. The mechanisms and products of the dissolution of realgar by Acidithiobacillus ferrooxidans (A. ferrooxidans) in the presence (0.2 g and 2 g) and absence of zerovalent iron (ZVI) are investigated for three stages (each of 7 d with fresh A.
Fenghua Zhao, Karen A Hudson-Edwards
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Science of the Total Environment, 2019 Massive realgar tailings abandoned in mining areas in China have caused serious arsenic (As) pollution seeking for urgent disposal.
Xin Wang, He Zhang, Linling Wang
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Realgar‐induced nephrotoxicity via ferroptosis in mice
Journal of Applied Toxicology, 2022AbstractFerroptosis is a novel form of iron‐dependent cell death that is involved in arsenic‐induced toxicity. Realgar is an arsenic‐containing Chinese medicine, which can result in nephrotoxicity because of long‐term exposure. However, it remains scientifically unknown whether Realgar is an inducer of ferroptosis in the kidney. This study investigated
Sheng Zhang, Heng Zhou, Limin Li
exaly +3 more sources
Catalytic effect of Ag+ and Cu2+ on leaching realgar (As2S2)
Hydrometallurgy, 2011 The catalytic effect of Ag+ and Cu2+ on the dissolution of realgar was studied. In the absence of these catalysis ions, little realgar can be leached by Fe3+ either with or without bacteria.
Guangji Zhang, Junya Cao, Chao Yang
exaly +2 more sources
China Journal of Chinese Materia Medica, 2011
OBJECTIVE To investigate the toxicity of realgar and provide the scientific basis for safety use of realgar in clinic. METHOD Acute toxicity was tested by single oral administration. Chronic toxicity of realgar was tested at different dose levels (5, 10, 20, 80, 160 mg x kg(-1) x d(-1)) which correspond to 1/2, 1, 2, 8, 16 times of human dose levels ...
Aihua, Liang +8 more
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OBJECTIVE To investigate the toxicity of realgar and provide the scientific basis for safety use of realgar in clinic. METHOD Acute toxicity was tested by single oral administration. Chronic toxicity of realgar was tested at different dose levels (5, 10, 20, 80, 160 mg x kg(-1) x d(-1)) which correspond to 1/2, 1, 2, 8, 16 times of human dose levels ...
Aihua, Liang +8 more
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[Microscopic raman imaging spectra of realgar and light-induced degradation products in realgar].
Guang pu xue yu guang pu fen xi = Guang pu, 2010Light-induced degradation in realgar was studied by means of Raman spectroscopy. The result substantiated the following reaction: An additional S atom is inserted between the As atoms in the As4S4 molecule because As--As bonds are weaker than As--S bonds. It is likely that the resulting As--S--As molecule is too unstable to exist.
Jia-lin, Xu +4 more
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Realgar and realgar-containing Liu-Shen-Wan are less acutely toxic than arsenite and arsenate
Journal of Ethnopharmacology, 2011Liu-Shen-Wan (LSW) is a widely-used traditional Chinese medicine containing realgar (As(4)S(4)).Realgar has been included in many traditional medicines, and is often taken as arsenite for risk assessment in realgar-containing traditional remedies. Is realgar toxicologically similar to arsenite?Mice were orally given LSW (60 and 200mg/kg; 200mg LSW ...
Jie, Liu +5 more
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Zeitschrift für anorganische und allgemeine Chemie, 1965
AbstractBei der Umsetzung von Realgar, As4S4, mit verflüssigtem NH3 tritt Bildung eines blaßgelben kristallinen Adduktes, As4S4 · 4 NH3 ein. Das Addukt zersetzt sich oberhalb −15° unter NH3‐Abgabe und Rotfärbung. Durch Behandeln des Adduktes mit NH3 bei −35° erhält man das tiefrote Imid, As4S3NH, das im Hochvakuum bei 125° sublimiert.
Klavs Sommer, Margot Becke‐Goehring
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AbstractBei der Umsetzung von Realgar, As4S4, mit verflüssigtem NH3 tritt Bildung eines blaßgelben kristallinen Adduktes, As4S4 · 4 NH3 ein. Das Addukt zersetzt sich oberhalb −15° unter NH3‐Abgabe und Rotfärbung. Durch Behandeln des Adduktes mit NH3 bei −35° erhält man das tiefrote Imid, As4S3NH, das im Hochvakuum bei 125° sublimiert.
Klavs Sommer, Margot Becke‐Goehring
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Current Medical Science, 2022
Realgar is a traditional mineral Chinese medicine with antitumor effects, but it has high toxicity and low efficacy in its crude form. The purpose of this study was to optimize realgar to increase its efficacy and therapeutic potential.Crude realgar (CR) was mechanically ground to obtain nano-realgar (NR), and then nano-realgar processed products ...
Juan, Xi +5 more
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Realgar is a traditional mineral Chinese medicine with antitumor effects, but it has high toxicity and low efficacy in its crude form. The purpose of this study was to optimize realgar to increase its efficacy and therapeutic potential.Crude realgar (CR) was mechanically ground to obtain nano-realgar (NR), and then nano-realgar processed products ...
Juan, Xi +5 more
openaire +2 more sources
Toxicokinetics and tissue distribution study of arsenic in realgar
China Journal of Chinese Materia Medica, 2010To study the toxicokinetics and tissue distribution of total arsenic after giving different doses realgar to rats.The concentration of arsenic in blood, urine and main organs were determined after single oral administration of 3.738, 1.869, 0.935 g x kg(-1) realgar in rats.The distribution half life (t(1/2 alpha)) and elimination half life (t(1/2 beta))
Juan, Zhang, Yishan, Tang, Qide, Liu
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