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基辅市叶片和土壤中痕量金属的元素及热重表征作为污染生物指示物

Elemental and Thermo-gravimetric Characterization of Trace Metals in Leaves and Soils as Bioindicators of Pollution in Kyiv City.

作者信息

Tarik Mohamed, Hoffmann Michael, Shmarin Sergey, Patil Ajay Bhagwan, Ludwig Christian

机构信息

Bioenergy and Catalysis Laboratory (LBK), Energy and Environment Research Division (ENE), Paul Scherrer Institut (PSI), CH 5232 Villigen PSI, Switzerland.

Institute of Water Problems and Land Reclamation of the National Academy of Agrarian Sciences of Ukraine, Kyiv, Ukraine.

出版信息

Water Air Soil Pollut. 2021;232(8):331. doi: 10.1007/s11270-021-05277-y. Epub 2021 Aug 9.

DOI:10.1007/s11270-021-05277-y
PMID:34776552
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8550555/
Abstract

In this study, leaf and soil samples were used as bio-monitors for different alkali and heavy metals at six different locations in Kyiv city. Using x-y plots of the inductively coupled plasma optical emission spectroscopy (ICP-OES) data measured the discrepancy level in elemental composition between the different investigated areas; the correlation between the concentrations in tree leaves and the samples from the surrounding soils were investigated. While the concentration of essential mineral elements and metals was found to be similar in several leaf and soil samples, in other samples, their concentration spread up to more than one order of magnitude. The concentration of metals was found to be higher in soil samples than in leaves. Thermo-gravimetric analysis (TGA) data helped to further characterize both types of samples. The metal removal during the incineration of the leaves was investigated by coupling a thermo-gravimetric analyzer to an inductively coupled plasma optical emission spectrometer (TGA-ICP-OES). The release of Cd, K, Na, Pb, and Zn during incineration at temperatures up to 960 °C was online monitored, and some insights were drawn about the behavior of such metals and the chemistry involved in the volatilization process.

摘要

在本研究中，树叶和土壤样本被用作基辅市六个不同地点不同碱和重金属的生物监测器。利用电感耦合等离子体发射光谱（ICP-OES）数据的x-y图测量不同研究区域之间元素组成的差异水平；研究了树叶中的浓度与周围土壤样本之间的相关性。虽然在几个树叶和土壤样本中发现必需矿物元素和金属的浓度相似，但在其他样本中，它们的浓度差异高达一个数量级以上。发现土壤样本中金属的浓度高于树叶中的浓度。热重分析（TGA）数据有助于进一步表征这两种类型的样本。通过将热重分析仪与电感耦合等离子体发射光谱仪（TGA-ICP-OES）联用，研究了树叶焚烧过程中的金属去除情况。在线监测了温度高达960℃时焚烧过程中镉、钾、钠、铅和锌的释放情况，并对这些金属的行为以及挥发过程中涉及的化学过程有了一些了解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/2f24a52857be/11270_2021_5277_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/70b7b9a4cf8e/11270_2021_5277_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/27ba4890eed5/11270_2021_5277_Fig2_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/a3a5be9cb801/11270_2021_5277_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/2f24a52857be/11270_2021_5277_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/70b7b9a4cf8e/11270_2021_5277_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/27ba4890eed5/11270_2021_5277_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/c6205f8cb7cb/11270_2021_5277_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/a3a5be9cb801/11270_2021_5277_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/312f/8550555/2f24a52857be/11270_2021_5277_Fig5_HTML.jpg

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