Determination of optimal chromium oxidation conditions and evaluation of soil oxidative activity in soils

Makino, Tomoyuki; Kamewada, Kunihiko; Hatta, Toshihisa; Takahashi, Yoshiaki; Sakurai, Yasuhisa

doi:10.1016/s0375-6742(98)00055-7

Cited by 20 publications

(15 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A complete lack of oxidation of Cr(III) even at highest level of MnO 2 in Histosol confirms earlier investigations of Makino et al (1998) who observed, compared with other soils, extremely low Cr oxidation by manganese oxides, i.e. soil oxidative activity in Andisols, regardless of easily reducible Mn content.…”

Section: Resultssupporting

confidence: 90%

The effects of MnO2 on sorption and oxidation of Cr(III) by soils

2004

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 90%

The effects of MnO2 on sorption and oxidation of Cr(III) by soils

2004

View full text Add to dashboard Cite

“…Note that the release rate of 13 C-labelled lactate that was added to the HRC could be higher than that of polylactate, which is the main component of HRC. The carbon isotope ratios of the DIC decreased after pumping was stopped, but remained (53,54), and the lactate/polylactate release rates.…”

Section: Resultsmentioning

confidence: 99%

In Situ Long-Term Reductive Bioimmobilization of Cr(VI) in Groundwater Using Hydrogen Release Compound

Faybishenko

Hazen

Long

et al. 2008

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Several extraction agents including acids (HCl, HNO 3 ), chelating agents (EDTA, DTPA, NTA, EDDS), buffered or unbuffered salt solutions (NH 4 OAc, CaC1 2 , NH 4 NO 3 ), and a variety of procedures have so far been used to determine the bioavailable fractions of metals in soils [14,[18][19][20]. However, until present there has been no consensus about a unique method that always gives the best estimate for the bioavailable fraction, as the availability of metal to plants depends on a large number of properties concerning the soil, plant and climate [21].…”

Section: Introductionmentioning

confidence: 99%

Distribution and bioavailability of Cr in central Euboea, Greece

Megremi

2010

Open Geosciences

View full text Add to dashboard Cite

Plants and soils from central Euboea, were analyzed for Cr (total) , Cr(VI), Ni, Mn, Fe and Zn. The range of metal concentrations in soils is typical to those developed on Fe-Ni laterites and ultramafic rocks. Their bioavailability was expressed in terms of concentrations extractable with EDTA and 1 M HNO 3 , with EDTA having a limited effect on metal recovery. Cr(VI) concentrations in soils evaluated by alkaline digestion solution were lower than phytotoxic levels. Chromium and Ni -and occasionally Zn -in the majority of plants were near or above toxicity levels. Cr(VI) concentrations in plants were extremely low compared to total chromium concentrations. Cr (total) in ground waters ranged from <1 μg.L −1 to 130 μg.L −1 , with almost all chromium present as Cr(VI). With the exception of Cr (total) and in some cases Zn, all elements were below regulatory limits for drinking water. On the basis of Ca, Mg, Cr (total) and Si ground waters were classified into three groups: Group(I) with Cr concentrations less than 1 μg.L −1 from a karstic aquifer; Group(II) with average concentrations of 24 μg.L −1 of Cr and relatively high Si associated with ophiolites; and Group(III) with Cr concentrations of up to 130 μg.L −1 , likely due to anthropogenic activity. Group(III) is comparable to ground waters from Assopos basin, characterized by high Cr(VI) concentrations, probably due to industrial actrivities.

show abstract

Determination of optimal chromium oxidation conditions and evaluation of soil oxidative activity in soils

Cited by 20 publications

References 8 publications

The effects of MnO2 on sorption and oxidation of Cr(III) by soils

The effects of MnO2 on sorption and oxidation of Cr(III) by soils

In Situ Long-Term Reductive Bioimmobilization of Cr(VI) in Groundwater Using Hydrogen Release Compound

Distribution and bioavailability of Cr in central Euboea, Greece

Contact Info

Product

Resources

About