During oil and gas exploitation, large amounts of produced water are generated. This water has to be analyzed with relation to the chemical
composition todeduce the environmental impact of its discharge after a treatment process. Therefore, a studywas carriedout toevaluate preliminarily the
BTEX (benzene, toluene, ethylbenzene and xylenes), polycyclic aromatic hydrocarbons (PAHs) and metals contents in produced water samples taken
fromeffluents of theBonsucesso treatment plant located in the city of Carmópolis, themost important oil and gas producer in the State of Sergipe,North-east of Brazil. Three methods were optimized to determine the target compounds. Polycyclic aromatic hydrocarbons were determined by gas
chromatography with mass spectrometric detection (GC/MS), volatile aromatic hydrocarbons (BTEX) by gas chromatography with photoionization
detector (GC/PID) and metals were analyzed by flame atomic absorption spectrometry (FAAS). The results showed that concentrations of the target
compounds in these samples ranged from96.7 to 1397μgL
−1
for BTEX, from0.9 to 10.3μgL
−1
for PAHs and from0.003 to 4540mg L
−1
for metals.
© 2006 Elsevier B.V. All rights reserved.
During oil and gas exploitation, large amounts of produced water are generated. This water has to be analyzed with relation to the chemical
composition todeduce the environmental impact of its discharge after a treatment process. Therefore, a studywas carriedout toevaluate preliminarily the
BTEX (benzene, toluene, ethylbenzene and xylenes), polycyclic aromatic hydrocarbons (PAHs) and metals contents in produced water samples taken
fromeffluents of theBonsucesso treatment plant located in the city of Carmópolis, themost important oil and gas producer in the State of Sergipe,North-east of Brazil. Three methods were optimized to determine the target compounds. Polycyclic aromatic hydrocarbons were determined by gas
chromatography with mass spectrometric detection (GC/MS), volatile aromatic hydrocarbons (BTEX) by gas chromatography with photoionization
detector (GC/PID) and metals were analyzed by flame atomic absorption spectrometry (FAAS). The results showed that concentrations of the target
compounds in these samples ranged from96.7 to 1397μgL
−1
for BTEX, from0.9 to 10.3μgL
−1
for PAHs and from0.003 to 4540mg L
−1
for metals.
© 2006 Elsevier B.V. All rights reserved.
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