Ageing of zinc in highly-weathered iron-rich soils

Erica Donner, Mike J. McLaughlin, Mark E. Hodson, Diane Heemsbergen, Michael St J. Warne, Stephen Nortcliff, Kris Broos

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Background and aims: The reactivity and bioavailability of soluble metal added to soil decreases with time. This process, called ageing, has mainly been investigated in temperate soils. This paper uses isotopic exchangeability to investigate Zn ageing in a range of highly weathered and/or oxide-rich soils. Methods: Changes in lability of soluble added Zn (450 mg Zn/kg soil) over time was measured in six contrasting soils, with pH adjusted to give ten treatments per soil type ranging from pH 4 to 7. Results: Decreasing extractability and isotopic exchangeability (lability) over time revealed substantial fixation of added zinc in six highly weathered/variable charge soils. Strong negative relationships between pH and solubility, and pH and lability were observed. In soils with pH > 6. 5 a significant proportion of the added metal becomes non-isotopically exchangeable within 15 s of addition. Correlations between Mn solubility and Zn lability throughout the incubation demonstrated the role of redox conditions (and pH) in regulating Zn lability. Conclusions: Results showed zinc fixation was strongly related to pH and ageing time, and relatively unaffected by soil type and mineralogy. Very rapid reductions in radiolability immediately (<15 s) after spiking suggest that precipitation plays a role in fixation of added soluble zinc at near neutral pH, however spectroscopic studies are needed to confirm this. Radiolability of added zinc was also affected by changing redox conditions during incubation.

Original languageEnglish
Pages (from-to)83-95
Number of pages13
JournalPlant and Soil
Volume361
Issue number1-2
Early online date1 May 2012
DOIs
Publication statusPublished - 1 Dec 2012
Externally publishedYes

Fingerprint

zinc
iron
soil
fixation
redox conditions
soil type
solubility
incubation
soil types
variable charge soils
metals
soil mineralogy
temperate soils
metal
bioavailability
oxides
oxide

Keywords

  • Ageing
  • E-values
  • Oxisols
  • Sorption
  • Tropical soils
  • Zinc

ASJC Scopus subject areas

  • Soil Science
  • Plant Science

Cite this

Donner, E., McLaughlin, M. J., Hodson, M. E., Heemsbergen, D., Warne, M. S. J., Nortcliff, S., & Broos, K. (2012). Ageing of zinc in highly-weathered iron-rich soils. Plant and Soil, 361(1-2), 83-95. https://doi.org/10.1007/s11104-012-1247-y

Ageing of zinc in highly-weathered iron-rich soils. / Donner, Erica; McLaughlin, Mike J.; Hodson, Mark E.; Heemsbergen, Diane; Warne, Michael St J.; Nortcliff, Stephen; Broos, Kris.

In: Plant and Soil, Vol. 361, No. 1-2, 01.12.2012, p. 83-95.

Research output: Contribution to journalArticle

Donner, E, McLaughlin, MJ, Hodson, ME, Heemsbergen, D, Warne, MSJ, Nortcliff, S & Broos, K 2012, 'Ageing of zinc in highly-weathered iron-rich soils' Plant and Soil, vol. 361, no. 1-2, pp. 83-95. https://doi.org/10.1007/s11104-012-1247-y
Donner E, McLaughlin MJ, Hodson ME, Heemsbergen D, Warne MSJ, Nortcliff S et al. Ageing of zinc in highly-weathered iron-rich soils. Plant and Soil. 2012 Dec 1;361(1-2):83-95. https://doi.org/10.1007/s11104-012-1247-y
Donner, Erica ; McLaughlin, Mike J. ; Hodson, Mark E. ; Heemsbergen, Diane ; Warne, Michael St J. ; Nortcliff, Stephen ; Broos, Kris. / Ageing of zinc in highly-weathered iron-rich soils. In: Plant and Soil. 2012 ; Vol. 361, No. 1-2. pp. 83-95.
@article{dbe5da2f589a44588d8a2e2517645df6,
title = "Ageing of zinc in highly-weathered iron-rich soils",
abstract = "Background and aims: The reactivity and bioavailability of soluble metal added to soil decreases with time. This process, called ageing, has mainly been investigated in temperate soils. This paper uses isotopic exchangeability to investigate Zn ageing in a range of highly weathered and/or oxide-rich soils. Methods: Changes in lability of soluble added Zn (450 mg Zn/kg soil) over time was measured in six contrasting soils, with pH adjusted to give ten treatments per soil type ranging from pH 4 to 7. Results: Decreasing extractability and isotopic exchangeability (lability) over time revealed substantial fixation of added zinc in six highly weathered/variable charge soils. Strong negative relationships between pH and solubility, and pH and lability were observed. In soils with pH > 6. 5 a significant proportion of the added metal becomes non-isotopically exchangeable within 15 s of addition. Correlations between Mn solubility and Zn lability throughout the incubation demonstrated the role of redox conditions (and pH) in regulating Zn lability. Conclusions: Results showed zinc fixation was strongly related to pH and ageing time, and relatively unaffected by soil type and mineralogy. Very rapid reductions in radiolability immediately (<15 s) after spiking suggest that precipitation plays a role in fixation of added soluble zinc at near neutral pH, however spectroscopic studies are needed to confirm this. Radiolability of added zinc was also affected by changing redox conditions during incubation.",
keywords = "Ageing, E-values, Oxisols, Sorption, Tropical soils, Zinc",
author = "Erica Donner and McLaughlin, {Mike J.} and Hodson, {Mark E.} and Diane Heemsbergen and Warne, {Michael St J.} and Stephen Nortcliff and Kris Broos",
year = "2012",
month = "12",
day = "1",
doi = "10.1007/s11104-012-1247-y",
language = "English",
volume = "361",
pages = "83--95",
journal = "Plant and Soil",
issn = "0032-079X",
publisher = "Springer Verlag",
number = "1-2",

}

TY - JOUR

T1 - Ageing of zinc in highly-weathered iron-rich soils

AU - Donner, Erica

AU - McLaughlin, Mike J.

AU - Hodson, Mark E.

AU - Heemsbergen, Diane

AU - Warne, Michael St J.

AU - Nortcliff, Stephen

AU - Broos, Kris

PY - 2012/12/1

Y1 - 2012/12/1

N2 - Background and aims: The reactivity and bioavailability of soluble metal added to soil decreases with time. This process, called ageing, has mainly been investigated in temperate soils. This paper uses isotopic exchangeability to investigate Zn ageing in a range of highly weathered and/or oxide-rich soils. Methods: Changes in lability of soluble added Zn (450 mg Zn/kg soil) over time was measured in six contrasting soils, with pH adjusted to give ten treatments per soil type ranging from pH 4 to 7. Results: Decreasing extractability and isotopic exchangeability (lability) over time revealed substantial fixation of added zinc in six highly weathered/variable charge soils. Strong negative relationships between pH and solubility, and pH and lability were observed. In soils with pH > 6. 5 a significant proportion of the added metal becomes non-isotopically exchangeable within 15 s of addition. Correlations between Mn solubility and Zn lability throughout the incubation demonstrated the role of redox conditions (and pH) in regulating Zn lability. Conclusions: Results showed zinc fixation was strongly related to pH and ageing time, and relatively unaffected by soil type and mineralogy. Very rapid reductions in radiolability immediately (<15 s) after spiking suggest that precipitation plays a role in fixation of added soluble zinc at near neutral pH, however spectroscopic studies are needed to confirm this. Radiolability of added zinc was also affected by changing redox conditions during incubation.

AB - Background and aims: The reactivity and bioavailability of soluble metal added to soil decreases with time. This process, called ageing, has mainly been investigated in temperate soils. This paper uses isotopic exchangeability to investigate Zn ageing in a range of highly weathered and/or oxide-rich soils. Methods: Changes in lability of soluble added Zn (450 mg Zn/kg soil) over time was measured in six contrasting soils, with pH adjusted to give ten treatments per soil type ranging from pH 4 to 7. Results: Decreasing extractability and isotopic exchangeability (lability) over time revealed substantial fixation of added zinc in six highly weathered/variable charge soils. Strong negative relationships between pH and solubility, and pH and lability were observed. In soils with pH > 6. 5 a significant proportion of the added metal becomes non-isotopically exchangeable within 15 s of addition. Correlations between Mn solubility and Zn lability throughout the incubation demonstrated the role of redox conditions (and pH) in regulating Zn lability. Conclusions: Results showed zinc fixation was strongly related to pH and ageing time, and relatively unaffected by soil type and mineralogy. Very rapid reductions in radiolability immediately (<15 s) after spiking suggest that precipitation plays a role in fixation of added soluble zinc at near neutral pH, however spectroscopic studies are needed to confirm this. Radiolability of added zinc was also affected by changing redox conditions during incubation.

KW - Ageing

KW - E-values

KW - Oxisols

KW - Sorption

KW - Tropical soils

KW - Zinc

UR - http://www.scopus.com/inward/record.url?scp=84869505832&partnerID=8YFLogxK

U2 - 10.1007/s11104-012-1247-y

DO - 10.1007/s11104-012-1247-y

M3 - Article

VL - 361

SP - 83

EP - 95

JO - Plant and Soil

JF - Plant and Soil

SN - 0032-079X

IS - 1-2

ER -