Dynamics of heavy metal (Ni, Cu) and sulfur (S) content in tree-ring - - PowerPoint PPT Presentation

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Dynamics of heavy metal (Ni, Cu) and sulfur (S) content in tree-ring - - PowerPoint PPT Presentation

Mar 15, 2023 272 likes •482 views

Dynamics of heavy metal (Ni, Cu) and sulfur (S) content in tree-ring of larch affected by industrial pollution from the Norilsk smelters A.I. Fertikov 1,2 , A.V. Kirdyanov 2 , A.S. Shishikin 2 1 Siberian Federal University, Krasnoyarsk

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Dynamics of heavy metal (Ni, Cu) and sulfur (S) content in tree-ring of larch affected by industrial pollution from the Norilsk smelters

A.I. Fertikov1,2, A.V. Kirdyanov2, A.S. Shishikin2

1Siberian Federal University, Krasnoyarsk

(fert_ov@mail.ru)

2V.N.Sukachev Institute of Forest SB RAS, Krasnoyarsk

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The study area

Norilsk industrial region located in the north

  • f the Krasnoyarsk Territory in the south-west
  • f the Taimyr Peninsula. This is a unique

industrial complex for the extraction and production of nonferrous and precious metals.

  • airborne dust emissions
  • the objects for waste disposal (sedimentation

tanks, slag deposites)

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Airborne dust emissions

The amount of emissions of more than 2 million tones per year sulfur dioxide 96-98%

  • gaseous emissions

nitrogen oxides, carbon monoxide, chlorides, phenols 2-4 % copper 14%

  • inorganic dust

nickel 11%, etc.

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Area sampling

first site

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Area sampling

second site

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Area sampling

third site

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Area sampling

fourth site

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Area sampling

fifth site

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Location sites of sampling

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  • bjects and methods

wood disk or wood core

  • Objects

soil

  • water extraction
  • ammonium acetate buffer-extraction

X-ray fluorescence method

  • Methods

atomic-emission method

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The concentration of elements in different soil horizons

№ site Depth, cm Total contents, mg/kg Exctraction from soil, mg/kg Water AAB Cu Ni S Cu Ni Cu Ni 1 0-6 7-14 14-24 830 110 120 716 175 210 2660 751 570 1,13 0,68 72,14 48,33 2 2-8 8-18 100 99 140 110 1800 1351 0,27 0,15 31,27 24,78 3 0-10 10-20 20-60 935 90 120 525 97 130 1240 1359 972 1,98 1,27 95,62 69,69 4 0-4 4-40 522 67 200 58 1018 380 0,73 0,55 53,62 39,83 5 0-10 10-20 20-40 40-50 28 32 33 48 38 37 37 52 345 290 310 450 0,06 0,07 1,21 1,03

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The sulfur content

  • - heartwood, ▲– sapwood
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The copper content

  • - heartwood, ▲– sapwood
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The nickel content

  • - heartwood, ▲– sapwood
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Dynamics of tree death

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The ITRAX Multiscanner

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Change in the concentration of calcium in the tree-ring

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Conclusions

  • Elemental content of the wood samples was combined with the

data on elemental content of soils. It was found, that the hydrogeological regime of the area, affects the content of heavy metals in soils, originating from manmade emissions of the enterprises of Norilsk industrial region. The maximum content in the studied elements in larch wood samples was found in the areas which are located on the way of gas and dust emissions in accordance with the wind rose. It is shown that the contamination

  • f the explored areas is due to the air transport of anthropogenic

emissions of companies, which is reflected in the accumulation of heavy metals and sulfur in the organic-soil horizons.

  • Preliminary results demonstrate a high potential of multi-elemental

analysis of tree-rings in detection of the features of changes in wood chemistry at one of the most polluted region of the world.

  • Further research suggests to analyze the distribution of heavy

metals in samples of wood with annual resolution

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Thank you for your attention