Analysis of Atmospheric Pollutants in Bucharest in Correlation with Meteorological Parameters

Rusănescu, Marin; Rusănescu, Carmen Otilia; Paraschiv, G.

doi:10.37358/rc.18.8.6463

Cited by 5 publications

(6 citation statements)

References 11 publications

(19 reference statements)

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“…This process takes place in two stages, in the first stage Fe is oxidized to Fe2 + [as Fe (OH) 2] [19,20] Fe(OH)2 + 1/2O2 + H2O  Fe(OH)3, Fe(OH)3 is rust. So, as observed, any corrosion process in aqueous solutions involves oxidation of the metal and reduction of some species in the solution (electron acceptors), resulting in the transfer of electrons between the two reactants [21].…”

mentioning

confidence: 86%

“…Aluminum alloys are generally used for various applications such as construction, transport, machinery and various industrial equipment. Due to their mechanical properties, low density, good electrical and thermal conductivity, high ductility, corrosion resistance, these alloys are also used in the manufacture of automobile tanks [1][2][3][4][5][6][7][8][9][10][11].…”

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confidence: 99%

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The Effect of the Action of Impurities Present in Methanol as a Basis for Automobile Fuel and Their Impact on the Environment

Enescu¹,

Stoian²,

Popescu³

et al. 2020

Rev.Chim.

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Corrosion of the tank made of aluminum alloy AlMg2,7Mn (5454) has been studied by electrochemical methods in methanolic solution containing different concentrations of acid, chloride, sulphate and water as impurities. In all these cases, the alloy exhibited a sponge passivity. Adding a 1mM solution in fuel leads to a considerable increase in corrosion potential, a 1 mM chlorine solution decreases the pitting potential, and a 1 mM solution of sulfate concentrations does not show any change. In the first phase, due to the hydroxyl ion that surrounds the aluminum, the present water leads to a decrease in the pitting potential.At the same time, the combustion of fuel remains the biggest source of air pollution. The air is polluted by impurities (acids, chlorides, sulphates and water) present in fuels, smoke (incomplete combustion) or nitrogen and sulfur oxides, so it is required to keep them within the limits set by the rules in force. Keywords: aluminium alloy, pitting potential, impurities, polarization curves, open circuit potential

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confidence: 86%

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confidence: 99%

The Effect of the Action of Impurities Present in Methanol as a Basis for Automobile Fuel and Their Impact on the Environment

Enescu¹,

Stoian²,

Popescu³

et al. 2020

Rev.Chim.

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“…These chemicals can be absorbed by lichens through their pores and affect the body's physiological processes. Due to this sensitivity, lichens can be used as indicators of the level of pollution with harmful substances in a specific geographical area [13][14][15][16][17][18][19][20].…”

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confidence: 99%

The Efficiency of Lichens in Air Biomonitoring in Teleorman County

Popa

Rusănescu

2023

Atmosphere

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In this work, we collected samples of lichens from the oaks of Pădurea Troianul, in the area of Teleorman county, to analyze the air quality, using the lichen biodiversity index and its determining factor. We transplanted them to the points to be monitored and analyzed them to detect and quantify the concentration of heavy metals or other toxic substances accumulated in the lichen biomass. This research was conducted at transplant sites, where five sample sites were chosen. We investigated the concentrations of the heavy metals Cd, Pb and Hg, making a comparison between the concentrations indicated by lichens and conventional measurements. The sampling, observation and analysis of lichens, we carried out in the months of September, October and November 2021, because in September the temperatures are higher and the degree of precipitation is lower than in November, so we followed a development of lichens covering different periods in terms of temperature and humidity. The comparison was made starting from the contamination factors obtained and measured in the sampling station. The application of the biomonitoring method allows obtaining an exact index of the purity of the atmosphere based on the tolerance of the transplanted lichens, the results being obtained quickly.

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“…"Pesticide residues" refer to any specific compounds remaining after the use of a pesticide on plants, in food, primary agricultural products, or animal feed. The term refers to all pesticide derivatives, including contaminants with health risks, as well as conversion products, metabolites, reaction products, and other by-products [26][27][28][29][30][31].…”

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confidence: 99%

Pesticide Residue Screening in Citrus Fruits Based on Gas Chromatography-Tandem Mass Spectrometry and Health Risk Assessment

MINEA,

RADULESCU

2023

J. Sci. Arts

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Lately, there is maximum concern in most states, all over the world, regarding the levels of pesticide residues in food products, considering their chemical properties with direct implications on human health. Many studies have shown that the adverse effects of cumulative exposure to multiple pesticide residues are far more severe than any single exposure. Statistically, the number of food alerts generated by the presence of pesticide residues in fruits on the market, between 2017 and 2021, as well as the situation related to the number of imports and intra-EU trade that took place during the same period was highlighted. This study aims to analyze pesticide residue levels in citrus fruits (i.e., lemons, grapefruit, and orange) imported from non-EU and EU countries, comparative with maximum residue limits (MRLs) provided by Regulation 2005/396/EC, to assess if intake levels pose a long-term risk to human health. The citrus samples collected from ten markets (retail and storage areas) in Romania, were prepared according to the procedure provided by EN 15662:2008 standard. The concentration of pesticide residues from citrus samples was determined by Gas Chromatography-Tandem Mass Spectrometry (GC-MS/MS). The results obtained by GC-MS/MS showed that from 52 citrus samples, 41 samples contained pesticide residues with values between 0.005 and 2.700 mg/kg, and several samples contained forbidden active substances (e.g., spirodiclofen and o-phenylphenol). The pesticide detection rate of the samples was 78.84%. The most frequently detected pesticides according to obtained results were imazalil, thiabendazole, pyrimethanil, pyraclostrobin, fludioxonil, as well as spirodiclofen and o-phenylphenol. The samples with the most detected active substances are from imports outside of the European Union. In addition, in several samples, simultaneously occurred four or even five mixed pesticide residues, hazardous to human health. This study shows that the presence of pesticide residues is constant in citrus fruits due to phytosanitary treatments carried out on crops in the development phase as well as on fruits in the storage phase treatments (e.g. insecticides, fungicides, etc.).

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Analysis of Atmospheric Pollutants in Bucharest in Correlation with Meteorological Parameters

Cited by 5 publications

References 11 publications

The Effect of the Action of Impurities Present in Methanol as a Basis for Automobile Fuel and Their Impact on the Environment

The Effect of the Action of Impurities Present in Methanol as a Basis for Automobile Fuel and Their Impact on the Environment

The Efficiency of Lichens in Air Biomonitoring in Teleorman County

Pesticide Residue Screening in Citrus Fruits Based on Gas Chromatography-Tandem Mass Spectrometry and Health Risk Assessment

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