2020
DOI: 10.3390/atmos11020165
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Health Risk Assessment of the Levels of BTEX in Ambient Air of One Urban Site Located in Leon, Guanajuato, Mexico during Two Climatic Seasons

Abstract: Levels of BTEX (benzene, toluene, ethylbenzene, and p-xylene) were determined in ambient air of an urban site located at the center of Mexico (Leon City in Guanajuato State) during two climatic seasons of 2018 (summer and autumn). Ethylbenzene (11.86 µg m−3) and toluene (11.85 µg m−3) showed the highest median concentrations during the study period. BTEX concentrations did not show a diurnal pattern but a seasonal trend was observed for benzene and toluene at a significant level of α = 0.05. Bi-variate and mul… Show more

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Cited by 37 publications
(14 citation statements)
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“…For example, there are differences found in ambient air in industrial, residential, or commercial areas around Yokohama city, Japan, between summer and winter, with the highest concentrations of BTEX in industrial areas [19]. A study during two climatic seasons of 2018 (summer and autumn) for BTEX determination has been conducted in Leon, Guanajuato, Mexico, which showed high-medium concentrations of toluene, ethylbenzene, and p-xylene during summer and the highest concentration of benzene in autumn [20]. In Jeddah, a coastal city in Saudi Arabia, the BTEX determinations showed seasonal variation during a one-year experiment, with higher concentrations during the spring and lower concentrations during the autumn [21].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…For example, there are differences found in ambient air in industrial, residential, or commercial areas around Yokohama city, Japan, between summer and winter, with the highest concentrations of BTEX in industrial areas [19]. A study during two climatic seasons of 2018 (summer and autumn) for BTEX determination has been conducted in Leon, Guanajuato, Mexico, which showed high-medium concentrations of toluene, ethylbenzene, and p-xylene during summer and the highest concentration of benzene in autumn [20]. In Jeddah, a coastal city in Saudi Arabia, the BTEX determinations showed seasonal variation during a one-year experiment, with higher concentrations during the spring and lower concentrations during the autumn [21].…”
Section: Introductionmentioning
confidence: 99%
“…The occurrence of pollutants affects not only the ambient air quality but also increases human respiratory symptoms and deaths. The scientific literature shows that respiratory problems, acute bronchitis, heart problems, lung cancer, lung diseases, and asthma have increased due to the high pollution levels of BTEX (especially benzene, which is classified as "carcinogenic to humans" (Group 1)) in the environment [20]. A recent meta-analysis study has shown morbidity in some months for cardiovascular and respiratory diseases, mainly for stroke and pneumonia.…”
Section: Introductionmentioning
confidence: 99%
“…However, residents exposed to high levels of formaldehyde for long periods of time are at risk of developing cancer. According to the United States Environmental Protection Agency health-risk-assessment model [ 60 , 61 ], and with reference to the Ministry of Environmental Protection and the China Environmental Exposure Behavior Study, the health risk of formaldehyde can be calculated by using the following equation. where CR is the carcinogenic risk, I is the daily intake, mg·(kg·d) −1 , CSF indicates the carcinogenic slope factor kg·d·mg −1 , and formaldehyde is 0.046 kg·d·mg −1 .…”
Section: Methodsmentioning
confidence: 99%
“…An LCR greater than 1 × 10 −4 indicates a maximum individual risk for cancer. Normally the LCR should be below 1 × 10 −6 [41].…”
Section: Deterministic and Stochastic Risk Calculationmentioning
confidence: 99%