Topic
Antimony
About: Antimony is a research topic. Over the lifetime, 11450 publications have been published within this topic receiving 155660 citations. The topic is also known as: Sb & element 51.
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77 citations
TL;DR: In this paper, the secondary mineralogy of Sb is reviewed and important species highlighted and a summary of reliable solubility data for species for which it is available is provided, pointing towards areas that require further research with respect to the mobility of the element in the natural environment.
Abstract: Secondary antimony minerals play an important role in buffering the dispersion of the element in oxidizing environments, particularly in the supergene zones of Sb-rich ores, mine wastes and other situations where appreciable amounts of Sb are present. The secondary mineralogy of Sb is reviewed and important species highlighted. Attention is drawn to species that require further characterisation. In addition, a summary of reliable solubility data is provided for species for which it is available, pointing towards areas that require further research with respect to the mobility of Sb in the natural environment.
77 citations
76 citations
TL;DR: In this paper, the effects of Sb, Sn, and Zr additions on the creep properties of Ni and Ni + 20 pct Cr are reported, and the results are discussed in terms of segregation effects on energetic and transport properties of the grain boundaries and cavity surfaces.
Abstract: The effects of Sb, Sn, and Zr additions on the creep properties of Ni and Ni + 20 pct Cr are reported. Antimony and tin additions (~1 wt pct) induce extensive grain boundary cavitation in nickel, while smaller antimony additions had little effect on Ni + 20 pct Cr. Addition of 0.11 pct Zr to Ni + 20 pct Cr greatly inhibited grain boundary cavitation and reduced its Coble creep rate. Auger electron spectroscopy of cavitated specimens provided direct evidence of impurity segregation to cavity surfaces. Residual sulfur segregated most strongly, and was observed on cavity surfaces in all cavitated specimens. Tin segregated somewhat less intensely than sulfur, and antimony segregated only slightly. Segregation of antimony and sulfur to uncavitated portions of Ni + 1 pct Sb grain boundaries was also observed. These results are discussed in terms of segregation effects on energetic and transport properties of the grain boundaries and cavity surfaces.
76 citations
TL;DR: The similarity of extended XAFS (EXAFS) spectra suggests that Sb speciation was independent of the sampling site, which indicates that S b or Sb2O3 emitted from the smelter was converted into Sb(V) compounds in the soil.
Abstract: Only limited information is available about the behavior of antimony (Sb) in contaminated soils. However, understanding the behavior of Sb in contaminated soils is important, because the toxicity or solubility of this element depends on its chemical state. In this study, we investigated the levels of Sb and the chemical forms of Sb in the soil around a smelter using X-ray absorption fine structure (XAFS) spectra. The highest Sb concentration in the contaminated soil was 2900 mg/kg dry soil. According to Sb-K edge X-ray absorption near edge (XANE) spectra, the Sb in the soil was in the form of Sb(V) compounds. The similarity of extended XAFS (EXAFS) spectra suggests that Sb speciation was independent of the sampling site, which indicates that Sb or Sb2O3 emitted from the smelter was converted into Sb(V) compounds in the soil.
76 citations