Applicability of selective dissolution of manganese oxide by acidified 0.1M NH2OH–HCl in Japanese soils

Suda, Aomi; Makino, Tomoyuki; Higashi, Teruo

doi:10.1016/j.geoderma.2011.04.015

Cited by 10 publications

(10 citation statements)

References 36 publications

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“…was observed in both T and Y sediments. This was in accordance with the study of Suda et al (2011). They investigated the extraction of Mn and Fe oxides from non-volcanic-ash soil and found Mn oxides could be semi-completely upon extraction for 30 min, while Fe oxides gradually dissolved throughout 4 h of extraction.…”

Section: Selection Of Extracting Conditions For Fe/mn Oxides Bound Casupporting

confidence: 87%

“…In the study of Suda et al (2011), the change of pH during extraction influenced the solubility of Fe oxides. Outola et al (2009) had made effort to control the pH change by readjusting, but they found better results were achieved by choosing settings that would avoid a significant increase in the final pH during the extraction process.…”

Section: Comparison Of the Modified Tessier Procedures With Tessier Prmentioning

confidence: 99%

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Sequential extraction of calcium in lake sediments for investigating the cycle of phosphorus in water environment

Liu

Zhu

et al. 2014

Int. J. Environ. Sci. Technol.

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The role of calcium (Ca) in the cycle of phosphorus in water environment depends on the speciation of Ca in sediments, and reliable Ca sequential extraction method is useful for obtaining information about Ca transport processes from sediment to water. Experiments have been carried out to develop a simple but robust Ca sequential extraction method for identification of Ca portioning in sediments. The sequential extraction protocol was modified for extractants, extracting time, concentration and pH of the reagents in the first three steps of Tessier sequential procedure. With optimum conditions, there were 1:25 sediment to solution ratio and 3 h of extracting time shaken with NH 4 AC (1 mol L -1 , pH 7.0) (exchangeable Ca fraction); 1:25 sediment to solution ratio and extracted with NH 4 AC (1 mol L -1 , pH 5.0) for 5 h (carbonatebound Ca fraction); and 1:30 sediment to solution ratio and extracted with NH 2 OHÁHCl (0.5 mol L -1 , pH 1.5) for 6 h (Fe and Mn oxides bound Ca fraction). The recovery for Tessier procedure ranged form 35.6 to 71.1 %, while the recovery for the modified Tessier procedure ranged form 46.1 to 86.9 %. These results revealed that Tessier procedure underestimated the proportion of Ca in exchangeable fraction. In sediments, Ca was mainly exchangeable and carbonate bound, which was considered as the most liable fractions.

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Section: Selection Of Extracting Conditions For Fe/mn Oxides Bound Casupporting

confidence: 87%

Section: Comparison Of the Modified Tessier Procedures With Tessier Prmentioning

confidence: 99%

Sequential extraction of calcium in lake sediments for investigating the cycle of phosphorus in water environment

Liu

Zhu

et al. 2014

Int. J. Environ. Sci. Technol.

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“…Dithionite-citrate-bicarbonate (DCB) and oxalate buffer (pH 3.0) extraction in dark were selected to evaluate the free and amorphous form of Fe, Al and Mn oxides, respectively. Six-steps sequential extraction was performed according to the method of Makino et al [20] and Suda et al [21]. Briefly, 4.0 g soil was extracted sequentially by 1 mol/L ammonium nitrate (pH 7.0) (exchangeable), 0.44 mol/L acetic acid (dilute acid soluble), 0.1 mol/L hydroxylammonium chloride with 0.01 mol/L nitric acid (pH 2.0) (manganese oxide occluded), 0.44 mol/L acetic acid after digestion of 6% hydrogen peroxides (organically bound), 0.2 mol/L ammonium oxalate (pH 3.0) with 4 g of ascorbic acid (iron oxide occluded).…”

Section: Physical and Chemical Analysis Of The Soil Particlementioning

confidence: 99%

The heavy metal partition in size-fractions of the fine particles in agricultural soils contaminated by waste water and smelter dust

Zhang

Luo

Makino

et al. 2013

Journal of Hazardous Materials

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“…Therefore, lowering the pH or adding chelating agents such as ethylenediaminetetraacetate might prevent re-adsorption during extraction. However, reduction of Fe oxides by NH 2 OH-HCl is highly accelerated by acidification (Chao 1972;Suda et al 2011). Therefore, longer extraction in an acidic NH 2 OH-HCl solution will not avoid significant extraction of Fe oxides.…”

Section: Discussion Optimal Time For Extraction Of Mn Oxidesmentioning

confidence: 99%

“…Chao (1972) showed that Mn oxides can be extracted by shaking soil samples for 30 min with 0.1 mol L −1 hydroxylamine hydrochloride (NH 2 OH-HCl) (pH 2.0) without significant extraction of Fe oxides. However, although Chao's method has been widely adopted (e.g., Means et al 1978;Obrador et al 2007), especially in sequential extraction procedures (e.g., Miller et al 1986;Makino et al 2006), Suda et al (2011) showed that Chao's method fails to extract measurable quantities of Mn oxides from Andisols and Andisol-like soil samples (10 ≤ , where the subscript "o" means ammonium oxalate-extractable). Andisol, a kind of volcanic ash soils, is found in volcanic regions across the world.…”

Section: Introductionmentioning

confidence: 99%

An improved selective extraction method for Mn oxides and occluded metals with emphasis on applicability to Andisols

Suda

Makino

Higashi

2013

Soil Science and Plant Nutrition

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It has been showed that Chao's method [extraction with 0.1 mol L −1 hydroxylamine hydrochloride (NH 2 OH-HCl) at pH 2.0 for 30 min], which is commonly used to extract manganese (Mn) oxides and occluded heavy metals from soil samples, is not suitable for Andisols because of low solubility, and thus low extractability, of Mn oxides in such soils. Therefore, a new method is evaluated here, for extracting Mn oxides and occluded heavy metals from Andisols, Entisols and Inceptisols. The method has three steps: (1) reduction of Mn oxides with 0.01 mol L −1 NH 2 OH-HCl (pH 5.0) for 16 h, (2) recovery of re-adsorbed metals by short-time extraction with 0.5 mol L −1 ammonium chloride in 0.02 mol L -1 hydrochloric acid, and (3) washing with ultrapure water. This method achieves a higher rate of extraction of Mn oxides than does Chao's method, especially from Andisol samples. Standard addition experiments showed that both the new method and Chao's method can successfully extract released cadmium (Cd), cobalt (Co), nickel (Ni) and zinc (Zn) from Mn oxides with little re-adsorption. The selectivity of Mn oxide extraction by the new method, indicated by the rate of extraction of iron (Fe) oxides and the aluminum (Al)/Mn and silicon (Si)/Mn extraction ratios, is comparable to that of Chao's method. Thus, the new method should be useful for extracting Mn oxides and occluded Cd, Co, Ni, and Zn from soil samples. Moreover, because the new method achieved nearly complete extraction of NH 2 OH-HCl reactive Mn oxides even from Andisol samples, the method is more applicable to Andisol samples than Chao's method.

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Applicability of selective dissolution of manganese oxide by acidified 0.1M NH2OH–HCl in Japanese soils

Cited by 10 publications

References 36 publications

Sequential extraction of calcium in lake sediments for investigating the cycle of phosphorus in water environment

Sequential extraction of calcium in lake sediments for investigating the cycle of phosphorus in water environment

The heavy metal partition in size-fractions of the fine particles in agricultural soils contaminated by waste water and smelter dust

An improved selective extraction method for Mn oxides and occluded metals with emphasis on applicability to Andisols

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