PAHs and BTEX in Groundwater of Gasoline Stations from Rio de Janeiro City, Brazil

Rego, Eliane Cristina Pires do; Netto, Annibal Duarte Pereira

doi:10.1007/s00128-007-9300-x

Cited by 29 publications

(10 citation statements)

References 17 publications

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“…In general, air pollutants in the lower troposphere are dispersed by horizontal advection and upward diffusion and removed by deposition process (wet and dry deposition) and chemical transformation, depending on their physicochemical properties. Because of the toxicity of these volatile aromatic compounds (Do Rego and Pereira Netto 2007; An 2004), they should be controlled and monitored regularly in air and water environments. …”

Section: Resultsmentioning

confidence: 99%

Wet deposition of hydrocarbons in the city of Tehran-Iran

Zahed

Pardakhti

Mohajeri

et al. 2009

Air Qual Atmos Health

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Air pollution in the city of Tehran has been a major problem for the past three decades. The direct effects of hydrocarbon contaminants in the air are particularly important such as their carcinogenic, mutagenic, and teratogenic effects which can be transported to other environments via dry and wet deposition. In the present study, rainwater samples were collected and analyzed for 16 polycyclic aromatic hydrocarbons (PAHs), benzene, toluene, ethyl benzene, and xylene (BTEX) as well as fuel fingerprints in two ranges of gasoline (C5–C11) and diesel fuel (C12–C20) using a gas chromatograph equipped with a flame ionization detector (GC/FID). Mean concentrations of ∑16 PAHs varied between 372 and 527 µg/L and for BTEX was between 87 and 188 µg/L with maximum of 36 µg/L for toluene. Both gasoline range hydrocarbons (GRH) and diesel range hydrocarbons (DRH) were also present in the collected rainwater at concentrations of 190 and 950 µg/L, respectively. Hydrocarbon transports from air to soil were determined in this wet deposition. Average hydrocarbon transportation for ∑PAHs, BTEX, GRH, and DRH was 2,747, 627, 1,152, and 5,733 µg/m2, respectively.

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Section: Resultsmentioning

confidence: 99%

Wet deposition of hydrocarbons in the city of Tehran-Iran

Zahed

Pardakhti

Mohajeri

et al. 2009

Air Qual Atmos Health

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“…According to Rebouças et al [3], groundwater has been losing quality due to contamination by septic tanks, landfills, contamination by pesticides, fertilizers, saltwater intrusion, pipeline fractures, abandoned or poorly sealed wells, industrial wastes, underground storage of chemicals, leakage of underground fuel tanks, etc. Contamination of aquifers by leakage of oil from underground storage tanks and oil spills, occurring in most cases in its extraction, refinement, transportation and storage, is a worldwide concern and has also been widely discussed in Brazil [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of 16 polycyclic aromatic hydrocarbons in groundwater by GC-FID after solid-phase extraction

2019

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Groundwater contamination by polycyclic aromatic hydrocarbons (PAH) may pose a risk to human health, as these compounds are considered to be highly toxic, carcinogenic and/or mutagenic and bioaccumulative. The aim of this study was to evaluate and determine PAH levels in groundwater samples collected from tubular wells in a city of northern Brazil by gas chromatography with flame ionization detector (GC-FID) used by the population for consumption. Sample pre-treatment using solid-phase extraction cartridges was performed in order to promote an enrichment of the PAH fraction of interest and to remove interferences from the matrix to further determine PAH in samples by GC-FID. The results obtained showed that all groundwater samples studied presented PAH levels lower than maximum values allowed by MS 2914/2011 and CONAMA 396/2008. The developed procedure is characterized by low limits of detection and quantification, equal to 0.024-0.113 µg L −1 and 0.079-0.378 μg L −1 , respectively, good linearity (r 2 > 0.99). The recoveries obtained for 16 PAH by the addition and recovery method ranged from 85.4 to 105.7% with good precision (RSD < 5.0%). The results of this study showed that the method developed is fast, accurate and robust with high efficiency for identification and determination of 16 PAH in groundwater samples.

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“…Over past few years, site-investigations on various contaminated sites have been widely carried out all around world [4][5][6][7][8][9][10]. Natural attenuation is regarded as environmentally friendly because human intervention may sometimes lead to unexpected secondary pollution [11].…”

Section: Introductionmentioning

confidence: 99%

A New Method to Evaluate Risk Alleviation of PAHs Contaminated Sites

Zhang

Inoue

2010

2010 4th International Conference on Bioinformatics and Biomedical Engineering

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Environmental risk is ascribed to contamination level as well as the potential decontamination capability of the contaminated sites. In some cases, natural attenuation by biodegradation may dominate self cleanup as microorganisms always try to survive, which reduces risk to human health. Conventional assessment is based on sequential monitoring of concentrations, which requires a large number of samples and long time. In addition, some organic compounds like polycyclic aromatic hydrocarbons(PAHs) are hard to be accurately measured due to their hydrophobic properties. The paper presented a new method to evaluate risk alleviation of PAHs contaminated sites. Instead of conventional method, the new method proposed DNA copies/cell quantity ratio as an indicator to evaluate microbial activity which indirectly reflects the trend of risk alleviation. The concept was theoretically elaborated and verified by lab experiments. In this study, Mycobacterium vanbaalenii PYR-1, a typical PAHs degrading bacterium, was introduced and phenanthrene was used as the sole PAHs substrate. The DNA copies and cell quantity were determined by real time polymerase chain reaction (PCR) and colony forming units (CFU) method respectively. Conventional method was also carried out as controls. The results implied the new method may be a fast evaluation of risk alleviation and potentially supportive for engineering applications.

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PAHs and BTEX in Groundwater of Gasoline Stations from Rio de Janeiro City, Brazil

Cited by 29 publications

References 17 publications

Wet deposition of hydrocarbons in the city of Tehran-Iran

Wet deposition of hydrocarbons in the city of Tehran-Iran

Simultaneous determination of 16 polycyclic aromatic hydrocarbons in groundwater by GC-FID after solid-phase extraction

A New Method to Evaluate Risk Alleviation of PAHs Contaminated Sites

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