Deposition of Polycyclic Aromatic Hydrocarbons (PAHs) into Northern Ontario Lake Sediments

Ga, Colby

doi:10.1101/786913

Cited by 4 publications

(6 citation statements)

References 47 publications

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“…Several studies on the seasonality of PAH deposition showed high deposit during cold season (winter or wet) than other seasons like summer, spring, autumn or dry due to pollution, residential heating, etc. (Wu et al, 2005;Colby (2019). Siudek (2022), also recorded high deposition ux in the order: winter > autumn > spring> summer with deposition of winter 11.1 times that of summer.…”

Section: Discussionmentioning

confidence: 93%

Assessment of Mutagenicity and Carcinogenicity Risks and Source Apportionment of Polycyclic Aromatic Hydrocarbons of Monitored Black Carbon (Soot) in Air and Swimming Pool Water in Port Harcourt

Muhyideen

Shittu

Ajibola

et al. 2023

Preprint

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Mutagenicity and carcinogenicity of polycyclic aromatic hydrocarbons (PAHs) of monitored soot in air and water in Port Harcourt swimming pool environment were assessed due to incessant downpour of soot in the area. Samples of soot were collected each for six hours in wet and dry seasons. Samples of water were also collected in the two seasons. PAH samples were analyzed using gas chromatography (GC) to generate data which were described using descriptive statistics. In wet season, the total PAHs concentration in the air is 4.603E-03 ppm and in water 7.782E-03 mg/l while in the dry season, it’s 3.636E-03 ppm in the air and 5.172E-03 mg/l in water. The PAH distribution patterns in water followed the same trend in air in wet and in dry seasons with the diagnostic ratios indicating similar source thus suggesting that the major source of PAHs in water is atmospheric deposition from the air. Also, HMW-PAHs dominated each profile with air and water in the study area act as secondary sources for LMW-PAHs in the wet season and water acts as a sink for HMW-PAHs in both the wet and dry seasons. The results of mutagenic equivalent (MEQ) of the study ranged between 5.01E-04 ppm (mg/l) and 1.82E-03mg/l (ppm) while that of toxic equivalent (TEQ) ranged between 1.88E-04ppm (mg/l) and 3.71E-03mg/l ppm. The highest contributions to the MEQ and TEQ and their respective potentials (MP and CP) which is the capacity to cause modiﬁcations in human’s DNA thus forming PAH-DNA adduct thereby resulting in mutations and cancer were made in the wet season by IcdP contributing 64% MP and 60 % CP and those of dry season were made by DahA contributing 61% MP and 90% CP. These dominant PAH compounds ie IcdP, DahA, BghiP, BbF, BaP, etc with diagnostic ratios indicated artisanal refineries and other minor contributory sources. Due to the effect of soot toxicants, individuals are to limit exposure while Governments need to take strict measures to reduce the activities of artisanal refineries.

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Section: Discussionmentioning

confidence: 93%

Assessment of Mutagenicity and Carcinogenicity Risks and Source Apportionment of Polycyclic Aromatic Hydrocarbons of Monitored Black Carbon (Soot) in Air and Swimming Pool Water in Port Harcourt

Muhyideen

Shittu

Ajibola

et al. 2023

Preprint

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“…Even though gaseous PAHs were produced in greater quantities from a variety of sources and showed more source-specific characteristics than particle-phase PAHs, they received less attention [ 16 , 99 , 100 ]. To investigate potential emission sources, the gaseous PAHs detected in this research were compared to particulate-phase PAHs in Chiang Mai from earlier studies.…”

Section: Resultsmentioning

confidence: 99%

“…For example, 1,3-dinitropyrene (1,3-DNP) and 1,8-dinitropyrene (1,8-DNP) are 6.3 × 10 4 and 1.1 × 10 5 times more mutagenic than benzo [a] pyrene, respectively [ 15 ]. Gaseous PAHs have also been shown to have more source-specific properties than particle-phase PAHs [ 16 , 17 , 18 ]. Because the dynamic range for ambient air reactivity is rather short, ranging from seconds to days [ 16 , 19 ], the data obtained demonstrated that gaseous PAHs are more prone to numerous reactions than particulate PAHs [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…Gaseous PAHs have also been shown to have more source-specific properties than particle-phase PAHs [ 16 , 17 , 18 ]. Because the dynamic range for ambient air reactivity is rather short, ranging from seconds to days [ 16 , 19 ], the data obtained demonstrated that gaseous PAHs are more prone to numerous reactions than particulate PAHs [ 20 ]. As a result, a long sampling period of gaseous PAHs (i.e., 24 h and 48 h) [ 19 ], similar to the particulate-phase sampling period (i.e., PM 2.5 ) or a combination with the particulate phase [ 21 ], may provide an underestimation of gaseous PAHs.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Atmospheric Conditions and Source Identification of Gaseous Polycyclic Aromatic Hydrocarbons (PAHs) during a Smoke Haze Period in Upper Southeast Asia

Tala,

Kraisitnitikul,

Chantara

2023

Toxics

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Gaseous polycyclic aromatic hydrocarbons were measured in northern Thailand. No previous studies have provided data on gaseous PAHs until now, so this study determined the gaseous PAHs during two sampling periods for comparison, and then they were used to assess the correlation with meteorological conditions, other pollutants, and their sources. The total concentrations of 8-PAHs (i.e., NAP, ACY, ACE, FLU, PHE, ANT, FLA, and PYR) were 125 ± 22 ng m−3 and 111 ± 21 ng m−3, with NAP being the most pronounced at 67 ± 18 ng m−3 and 56 ± 17 ng m−3, for morning and afternoon, respectively. High temperatures increase the concentrations of four-ring PAHs, whereas humidity and pressure increase the concentrations of two- and three-ring PAHs. Moreover, gaseous PAHs were estimated to contain more toxic derivatives such as nitro-PAH, which ranged from 0.02 ng m−3 (8-Nitrofluoranthene) to 10.46 ng m−3 (1-Nitronaphthalene). Therefore, they could be one of the causes of local people’s health problems that have not been reported previously. Strong correlations of gaseous PAHs with ozone indicated that photochemical oxidation influenced four-ring PAHs. According to the Pearson correlation, diagnostic ratios, and principal component analysis, mixed sources including coal combustion, biomass burning, and vehicle emissions were the main sources of these pollutants.

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“…Thus, the sediment becomes such an important place for storage of pollutants [24]. Sediments are the main environmental sink for PAHs, as PAHs within sediments experience minimal photochemical or biological degradation and well preserved [25,26].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Trend of Polyaromatic Hydrocarbons (PAHs) in Sediments from River Ethiope in the Niger Delta Region of Southern Nigeria

Edjere

Agbozu

Godwin

et al. 2020

IRJPAC

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Seasonal trends of polycyclic aromatic hydrocarbon in the sediment of River Ethiope in Delta State, Southern Nigeria were assessed in this study. Samples were taken from six different points at Ethiope River along its banks during the dry and rainy seasons. Samples were extracted using soxhlet apparatus and analysed with gas chromatography-flame ionization detector (GC/FID). The results obtained for the PAHs concentration ranges from 184.73 µg/kg – 3679.13 µg/kg for dry season and for rainy season, some stations were below detection limit (BDL) to a maximum value of 693.43 µg/kg. The result clearly shows that the total concentration of polycyclic aromatic hydrocarbon detected in the dry season was higher than those of the rainy season. Similarly, more PAHs compound of higher and lower rings were found in the dry season than in the rainy season in sediment samples. Although, the PAHs concentrations were quite low which indicated no danger status from the consumption or dermal contact for humans’ point of view, however, the levels can cause adverse effects for lower aquatic organisms which are exposed to the sediments on a daily basis. Therefore, persistent monitoring and strict adherence to responsible waste discharge should be upheld by all manufacturing and agro industries located in the study area in order to avoid deleterious effects of the biodiversity in the water bodies as well as ensuring safety of the consumers.

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Deposition of Polycyclic Aromatic Hydrocarbons (PAHs) into Northern Ontario Lake Sediments

Cited by 4 publications

References 47 publications

Assessment of Mutagenicity and Carcinogenicity Risks and Source Apportionment of Polycyclic Aromatic Hydrocarbons of Monitored Black Carbon (Soot) in Air and Swimming Pool Water in Port Harcourt

Assessment of Mutagenicity and Carcinogenicity Risks and Source Apportionment of Polycyclic Aromatic Hydrocarbons of Monitored Black Carbon (Soot) in Air and Swimming Pool Water in Port Harcourt

Impact of Atmospheric Conditions and Source Identification of Gaseous Polycyclic Aromatic Hydrocarbons (PAHs) during a Smoke Haze Period in Upper Southeast Asia

Seasonal Trend of Polyaromatic Hydrocarbons (PAHs) in Sediments from River Ethiope in the Niger Delta Region of Southern Nigeria

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