Bioindication of volcanic mercury (Hg) deposition around Mt. Etna (Sicily)

Sergio Calabrese, Alessandro Aiuppa, Mather, Pyle, Witt, Watt, Martin, Thomas, Sawyer, Pierre Delmelle

Risultato della ricerca: Article

19 Citazioni (Scopus)

Abstract

Mt. Etna is a major natural source of Hg to the Mediterranean region. Total mercury concentrations, [Hg]tot, in Castanea sativa (sweet chestnut) leaves sampled 7–13 km from Etna's vents (during six campaigns in 2005–2011) were determined using atomic absorption spectroscopy. [Hg]tot in C. sativa was greatest on Etna's SE flank reflecting Hg deposition from the typically overhead volcanic plume. [Hg]tot also showed Hg accumulation over the growing season, increasing with leaf age and recent eruptive activity. [Hg]tot in C. sativa was not controlled by [Hg]tot in soils, which instead was greatest on Etna's NW flank, and was correlated with the proportion of organic matter in the soil (% Org). An elevated [Hg]tot/% Org ratio in soils on Etna's SE flank is indicative of increased Hg deposition. This ratio was also found to decrease with local soil pH, suggesting that Hg deposited to the low pH and organic-poor soils on Etna's SE flank may not be retained but will instead be released to groundwater or re-emitted to the atmosphere. These results show that the deposition of volcanic Hg has clear impacts and confirm that Etna is an important source of Hg to the local environment.
Lingua originaleEnglish
pagine (da-a)12-22
Numero di pagine11
RivistaChemical Geology
Volume310–311
Stato di pubblicazionePublished - 2012

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Mercury
Soils
soil
atomic absorption spectroscopy
Atomic spectroscopy
organic soil
Vents
Absorption spectroscopy
growing season
plume
Biological materials
Groundwater
organic matter
groundwater
mercury
atmosphere

All Science Journal Classification (ASJC) codes

  • Geology
  • Geochemistry and Petrology

Cita questo

Bioindication of volcanic mercury (Hg) deposition around Mt. Etna (Sicily). / Calabrese, Sergio; Aiuppa, Alessandro; Mather; Pyle; Witt; Watt; Martin; Thomas; Sawyer; Delmelle, Pierre.

In: Chemical Geology, Vol. 310–311, 2012, pag. 12-22.

Risultato della ricerca: Article

Calabrese, S, Aiuppa, A, Mather, Pyle, Witt, Watt, Martin, Thomas, Sawyer & Delmelle, P 2012, 'Bioindication of volcanic mercury (Hg) deposition around Mt. Etna (Sicily)', Chemical Geology, vol. 310–311, pagg. 12-22.
Calabrese, Sergio ; Aiuppa, Alessandro ; Mather ; Pyle ; Witt ; Watt ; Martin ; Thomas ; Sawyer ; Delmelle, Pierre. / Bioindication of volcanic mercury (Hg) deposition around Mt. Etna (Sicily). In: Chemical Geology. 2012 ; Vol. 310–311. pagg. 12-22.
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abstract = "Mt. Etna is a major natural source of Hg to the Mediterranean region. Total mercury concentrations, [Hg]tot, in Castanea sativa (sweet chestnut) leaves sampled 7–13 km from Etna's vents (during six campaigns in 2005–2011) were determined using atomic absorption spectroscopy. [Hg]tot in C. sativa was greatest on Etna's SE flank reflecting Hg deposition from the typically overhead volcanic plume. [Hg]tot also showed Hg accumulation over the growing season, increasing with leaf age and recent eruptive activity. [Hg]tot in C. sativa was not controlled by [Hg]tot in soils, which instead was greatest on Etna's NW flank, and was correlated with the proportion of organic matter in the soil ({\%} Org). An elevated [Hg]tot/{\%} Org ratio in soils on Etna's SE flank is indicative of increased Hg deposition. This ratio was also found to decrease with local soil pH, suggesting that Hg deposited to the low pH and organic-poor soils on Etna's SE flank may not be retained but will instead be released to groundwater or re-emitted to the atmosphere. These results show that the deposition of volcanic Hg has clear impacts and confirm that Etna is an important source of Hg to the local environment.",
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TY - JOUR

T1 - Bioindication of volcanic mercury (Hg) deposition around Mt. Etna (Sicily)

AU - Calabrese, Sergio

AU - Aiuppa, Alessandro

AU - Mather, null

AU - Pyle, null

AU - Witt, null

AU - Watt, null

AU - Martin, null

AU - Thomas, null

AU - Sawyer, null

AU - Delmelle, Pierre

PY - 2012

Y1 - 2012

N2 - Mt. Etna is a major natural source of Hg to the Mediterranean region. Total mercury concentrations, [Hg]tot, in Castanea sativa (sweet chestnut) leaves sampled 7–13 km from Etna's vents (during six campaigns in 2005–2011) were determined using atomic absorption spectroscopy. [Hg]tot in C. sativa was greatest on Etna's SE flank reflecting Hg deposition from the typically overhead volcanic plume. [Hg]tot also showed Hg accumulation over the growing season, increasing with leaf age and recent eruptive activity. [Hg]tot in C. sativa was not controlled by [Hg]tot in soils, which instead was greatest on Etna's NW flank, and was correlated with the proportion of organic matter in the soil (% Org). An elevated [Hg]tot/% Org ratio in soils on Etna's SE flank is indicative of increased Hg deposition. This ratio was also found to decrease with local soil pH, suggesting that Hg deposited to the low pH and organic-poor soils on Etna's SE flank may not be retained but will instead be released to groundwater or re-emitted to the atmosphere. These results show that the deposition of volcanic Hg has clear impacts and confirm that Etna is an important source of Hg to the local environment.

AB - Mt. Etna is a major natural source of Hg to the Mediterranean region. Total mercury concentrations, [Hg]tot, in Castanea sativa (sweet chestnut) leaves sampled 7–13 km from Etna's vents (during six campaigns in 2005–2011) were determined using atomic absorption spectroscopy. [Hg]tot in C. sativa was greatest on Etna's SE flank reflecting Hg deposition from the typically overhead volcanic plume. [Hg]tot also showed Hg accumulation over the growing season, increasing with leaf age and recent eruptive activity. [Hg]tot in C. sativa was not controlled by [Hg]tot in soils, which instead was greatest on Etna's NW flank, and was correlated with the proportion of organic matter in the soil (% Org). An elevated [Hg]tot/% Org ratio in soils on Etna's SE flank is indicative of increased Hg deposition. This ratio was also found to decrease with local soil pH, suggesting that Hg deposited to the low pH and organic-poor soils on Etna's SE flank may not be retained but will instead be released to groundwater or re-emitted to the atmosphere. These results show that the deposition of volcanic Hg has clear impacts and confirm that Etna is an important source of Hg to the local environment.

KW - Volcano, Emission, Mercury, Bioindicator, Etna

UR - http://hdl.handle.net/10447/63246

M3 - Article

VL - 310–311

SP - 12

EP - 22

JO - Chemical Geology

JF - Chemical Geology

SN - 0009-2541

ER -