scholarly journals Deposition of atmospheric particulate matter by convective storms: the role of the convective updraft as an input mechanism

1966 ◽  
Author(s):  
Donald F. Gatz
Keyword(s):  
Particulate Matter ◽  
Atmospheric Particulate Matter ◽  
Atmospheric Particulate ◽  
Convective Storms ◽  
Input Mechanism

Identification of Major Contributors in Atmospheric Particulate Matters to Oxidative Stress by Using Surrogate Particles

2021 ◽  
Author(s):  
Keda Zhao ◽  
Min-Jie Li ◽  
Li-Xia Zhao ◽  
Nan Sang ◽  
Liang-Hong Guo
Keyword(s):  
Oxidative Stress ◽  
Particulate Matter ◽  
Adverse Effects ◽  
Atmospheric Particulate Matter ◽  
Particulate Matters ◽  
Complex Composition ◽  
Atmospheric Particulate

Oxidative stress is a unifying mechanism of atmospheric particulate matter (PM)-induced adverse effects. Due to their complex composition the role of PM constituents in triggering oxidative stress remains unclear. We...

scholarly journals Effects of urban atmospheric particulate matter on higher plants using Lycopersicon esculentum as model species

2021 ◽  
Vol 3 (9) ◽  
Author(s):  
Katalin Hubai ◽  
Nora Kováts ◽  
Gábor Teke
Keyword(s):  
Particulate Matter ◽  
Lycopersicon Esculentum ◽  
Protein Content ◽  
Higher Plants ◽  
Nutrient Content ◽  
Atmospheric Particulate Matter ◽  
Dose Effect ◽  
Atmospheric Particulate ◽  
Wide Range ◽  
Treatment Experiment

AbstractAtmospheric particulate matter (PM) is one of the major environmental concerns in Europe. A wide range of studies has proved the ecotoxic potential of atmospheric particles. PM exerts chemical stress on vegetation by its potentially toxic constituents; however, relatively few studies are available on assessing phytotoxic effects under laboratory conditions. In our study, aqueous extract of particulate matter was prepared and used for treatment. Experiment was following the procedure defined by the No. 227 OECD Guideline for the Testing of Chemicals: Terrestrial Plant Test. Tomato (Lycopersicon esculentum Mill.) plants were used; elucidated toxicity was assessed based on morphological and biochemical endpoints such as biomass, chlorophyll-a and chlorophyll-b, carotenoids, and protein content. Biomass reduction and protein content showed a clear dose–effect relationship; the biomass decreased in comparison with the control (100%) in all test groups (TG) at a steady rate (TG1: 87.73%; TG2: 71.77%; TG3: 67.01%; TG4: 63.63%). The tendency in protein concentrations compared to the control was TG1: 113.61%; TG2: 148.21% TG3: 160.52%; TG4: 157.31%. However, pigments showed a ‘Janus-faced’ effect: nutrient content of the sample caused slight increase at lower doses; actual toxicity became apparent only at higher doses (chlorophyll-a concentration decrease was 84.47% in TG4, chlorophyll-b was 77.17%, and finally, carotene showed 83.60% decrease in TG4).

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