Chemical fractionation of elements in leaf-deposited particulate matter of an urban area in India

IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Air Quality Atmosphere and Health Pub Date : 2024-01-27 DOI:10.1007/s11869-024-01523-4

Sai Pooja Mohanty, Rajesh Mishra, Sradhanjali Basti, Chandan Sahu

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Abstract

Plants act as natural scrubbers of urban air particulate matter. However, chemical fractionation of leaf-deposited particulate matter is an unexplored research area demanding immediate attention to get an insight into the source and fate of elements in plants. Therefore, work was carried out to evaluate the spatial and species variability in capturing air particles with variable elemental chemical fractions in an urban area in India. The results favor a distinct spatial and species variability in trapping total and fractional elemental leaf-deposited particulate matter (p < 0.05). Spatially, sensitive (0.135–16.979 μg/cm²) and industrial zones (0.043–3.982 μg/cm²) had a significant impact on the elemental fractionation of particles with the highest inter-species variation. Similarly, Mangifera indica was the best performer in trapping elements of all chemical fractions and was in the order M. indica > Butea monosperma > Ficus benghalensis. Ca and Na were found to be in all chemical fractions. When evaluated for biochemical impact, the leaf-extract pH and relative water content did not show any significant role in regulating the chemical fractionation in leaf deposits. Scanning electron micrographs highlighted the role of the waxy layer and pubescens as efficient particle retention zones. Thus, it is concluded that the chemical fractionation of elements in leaf-deposited particulate matter depends on the category of area and type of plant species.

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印度城市地区树叶沉积颗粒物中元素的化学分馏

植物是城市空气微粒物质的天然洗涤器。然而，叶片沉积颗粒物的化学分馏是一个尚未开发的研究领域，需要立即引起重视，以深入了解植物中元素的来源和归宿。因此，我们在印度的一个城市地区开展了一项工作，以评估捕获具有不同元素化学组分的空气颗粒物的空间和物种变异性。结果表明，在捕获叶片沉积颗粒物的总元素和部分元素方面，存在明显的空间和物种变异性（p < 0.05）。在空间上，敏感区（0.135-16.979 μg/cm2）和工业区（0.043-3.982 μg/cm2）对颗粒物的元素分馏有显著影响，物种间差异最大。同样，Mangifera indica 在捕获所有化学组分元素方面表现最好，依次为 M. indica > Butea monosperma > Ficus benghalensis。所有化学组分中都含有 Ca 和 Na。在评估生化影响时，叶片提取物的 pH 值和相对含水量在调节叶片沉积物的化学成分方面没有显示出任何重要作用。扫描电子显微照突出显示了蜡质层和短柔毛作为有效颗粒截留区的作用。因此，可以得出结论，叶片沉积颗粒物质中元素的化学分馏取决于地区类别和植物种类。

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来源期刊

Air Quality Atmosphere and Health ENVIRONMENTAL SCIENCES-

CiteScore

8.80

自引率

2.00%

发文量

146

审稿时长

>12 weeks

期刊介绍： Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health. It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes. International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals. Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements. This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.