Chromium occurrence in the environment and methods of its speciation

Kotaś, J.; Stasicka, Zofia

doi:10.1016/s0269-7491(99)00168-2

Cited by 1,496 publications

(846 citation statements)

References 177 publications

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“…The most widely used method for environments [25,26]. Thermodynamic calculations predict measuring Cr in the environment is the diphenylcarbazide Cr(VI) is most stable form in oxygenated aqueous solutions colorimetric method that is assumed specific to Cr(VI) (0.15 x 10-4-5.0 x 10-4mol/L dissolved 02) for pH />7 [25,47].…”

Section: Introductionmentioning

confidence: 99%

Determination of chromium valence over the range Cr(0)–Cr(VI) by electron energy loss spectroscopy

2006

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Section: Introductionmentioning

confidence: 99%

Determination of chromium valence over the range Cr(0)–Cr(VI) by electron energy loss spectroscopy

2006

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“…Chromium can exist in different chemical forms with oxidation states of (-2) to (?6), although the oxidation states of (?3) and (?6) are the most distributed forms in nature (Sims et al 1992;Kotaś and Stasicka 2000). Cr(III) occurs naturally in the environment and is considered to be a trace nutrient that is essential for the proper functioning of living organisms.…”

Section: Chemistry and Toxicity Of Cr(vi)mentioning

confidence: 99%

“…Cr(VI) is generally produced by industrial processes and exerts toxic effects on biological systems. Additionally, they are many different charges and physicochemical properties as well as chemical and biochemical reactivities (Kotaś and Stasicka 2000;Owlad et al 2009).…”

Section: Chemistry and Toxicity Of Cr(vi)mentioning

confidence: 99%

“…Further, it has been reported that short-term exposure to this heavy metal above the maximum permissible limit could provoke irritation and ulceration in the skin and stomach. Additionally, it can cause cancer, dermatitis, damage to the liver, renal circulation and nervous tissues, and even death from long-term exposure (Katz 1991;Kotaś and Stasicka 2000). Smith (2008) presented a chronological tracing of the events that were generated by the contamination of wells by Cr(VI), which damaged the Chinese population in the province of Liaoning.…”

Section: Introductionmentioning

confidence: 99%

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Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

García-Hernández

Villarreal-Chiu

Garza-González

2017

Int. J. Environ. Sci. Technol.

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Contamination by hexavalent chromium has had a large impact on modern society and human health. This problem is a consequence of its great industrial applicability to several products and processes. Short-term exposure to hexavalent chromium can cause irritation, ulceration in skin and stomach and in addition to cancer, dermatitis, and damage to liver, renal circulation and nervous tissues, with even death being observed in response to long-term exposures. Many techniques have been used for the remediation of this pollutant, including physical and chemical approaches and, in more recent years, biological methods. Filamentous fungi isolated from contaminated sites exhibit a significant tolerance to heavy metal; hence, they are an important source of microbiota capable of eliminating hexavalent chromium from the environment. However, these microorganisms can do so in different ways, including biosorption, bioreduction, and bioaccumulation, among others. In this review, we explore several of the most documented mechanisms that have been described for fungi/hexavalent chromium interactions and their potential use in bioremediation.

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“…Kocani Paddy Field sampling locations had lower levels of Cu (Table 3). Chromium (Cr) e According to Kotas and Stasicka (2000) the concentrations range in soil is between 1 and 3000 mg kg À1 , and in rivers and lakes water is from 26 mg L À1 e5.2 mg L À1 . The mean value in Paddy soils from the Kocani Valley is 4435 mg kg À1 (Table 3) which strongly exceeds the recommended values (Table 3).…”

Section: Potentially Toxic Metal Contentsmentioning

confidence: 99%

Potentially toxic contamination of sediments, water and two animal species in Lake Kalimanci, FYR Macedonia: Relevance to human health

Vrhovnik

Arrebola

Serafimovski

et al. 2013

Environmental Pollution

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. a b s t r a c tThe objectives of the research were: (1) to examine the concentrations of metals in Vimba melanops and Rana temporaria and (2) to evaluate the potential risks of the contaminated organisms to human health in Makedonska Kamenica region. Analyses identified high levels of Cr, Hg, Ni and Pb in studied animals, which also exceeded their permissible levels in food. In sediment and soil samples, levels of Cd, Cu, Cr, Pb, Zn and As were perceived, while Cd, Cu, Ni, Pb, Se and As were increased in water samples. Results of transfer factor revealed that the examined animals had higher bioaccumulation rate from surrounding waters than from sediments or soils. The accomplished Health Risk Index disclosed that studied animals can have considerably high health risks for inhabitants. Conclusively, they could be considered as highly contaminated with metals and can consequently harm human health, especially children in their early development stages.

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Chromium occurrence in the environment and methods of its speciation

Cited by 1,496 publications

References 177 publications

Determination of chromium valence over the range Cr(0)–Cr(VI) by electron energy loss spectroscopy

Determination of chromium valence over the range Cr(0)–Cr(VI) by electron energy loss spectroscopy

Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

Potentially toxic contamination of sediments, water and two animal species in Lake Kalimanci, FYR Macedonia: Relevance to human health

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