scholarly journals Could pollution levels, characteristics, sources of PAHs in atmospheric particulate matter break the Hu line?

2021 ◽  
Author(s):  
Yongfu Wu ◽  
Yan Shi ◽  
Ning Zhang ◽  
Yingqiang Wang ◽  
Yibin Ren
Keyword(s):  
Molecular Weight ◽  
Particulate Matter ◽  
South China ◽  
Mean Value ◽  
Atmospheric Particulate Matter ◽  
Central China ◽  
Atmospheric Particulate ◽  
Pollution Levels ◽  
Carcinogenic Pahs ◽  
Hu Line

Abstract Were the pollution levels, characteristics and sources of PAHs related to the population and GDP on both sides of the Hu line? What was the relationship between them? The study summarizes and discusses available data for PAHs in atmospheric particulate matter (PM) from 93 above prefecture-level cities in China in 2000-2019. The results suggested that the concentration of PAHs in PM varied with 7 regions of China in descending order: Northeast (NE) > North China (NC) > Northwest (NW) > South China (SC) > Southwest (SE) > Central China (CC) > South China Sea (SCS). Meanwhile, the mean value of carcinogenic PAHs, non-carcinogenic PAHs, PAHs derived from the burning of organic matter, low molecular weight PAHs, medium molecular weight PAHs, and high molecular weight PAHs in 16 priority PAHs was 53.5%, 46.5%, 80.0%, 16.9%, 45.2%, 37.9%, respectively. Moreover, from NW to NC, the content and pollution of PAHs increased with the increase of population and gross domestic product (GDP). From CC to SW and NC, the content and pollution of PAHs increased with the increase of population and the decrease of GDP. From SW to NW and CC to SC, the content and pollution of PAHs increased with the decrease in population and GDP. In part, PAHs pollution, characteristics and sources of atmospheric PM in Chinese cities broke the Hu line of population and GDP. Therefore, these require the promotion of comprehensive measures that will reduce pollution and sources of PAHs in heavily polluted areas.

scholarly journals Novel Coronavirus: How Atmospheric Particulate Affects Our Environment and Health

Challenges ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 6 ◽  
Author(s):  
Luigi Sanità di Toppi ◽  
Lorenzo Sanità di Toppi ◽  
Erika Bellini
Keyword(s):  
Air Pollution ◽  
Particulate Matter ◽  
Atmospheric Particulate Matter ◽  
The Novel ◽  
Atmospheric Particulate ◽  
Po Valley ◽  
Pollution Levels ◽  
Syncytial Virus ◽  
Novel Coronavirus ◽  
Prompt Action

It is well-known that atmospheric pollution, first and foremost the particulate matter (PM), causes serious diseases in humans. China’s metropolises and Italy’s Po Valley have in fact achieved a concerning degree of notoriety thanks to runaway air pollution problems. The spread of viral respiratory diseases is facilitated in polluted environments, an example of which is the respiratory syncytial virus bronchiolitis. In this opinion paper, we consider the possible relationship between air pollution, primarily airborne PM10–2.5, and the spread of the novel coronavirus in Northern Italy. If it is true that the novel coronavirus remains active from some hours to several days on various surfaces, it is logical to postulate that the same can occur when it is adsorbed or absorbed by the atmospheric particulate matter, which may also help carry the virus into the human respiratory system. As the Earth presents us with a very high bill to pay, governments and other authorities need to take prompt action to counter excessive pollution levels, both in Italy and in other countries.

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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