title: PAH composition of Water Based Drilling Mud and drill cuttings in the offshore region, east coast of India.
abstract: As a consequence of offshore drilling, used Water Based Drilling Muds (WBMs) are typically disposed off, by discharging into the sea; such a disposal does not fully eliminate the environmental hazards. Hence, in this study, 2, 3, 4 and 5 ringed polycyclic aromatic hydrocarbons (PAHs i.e. naphthalene, fluorene, phenanthrene, fluoranthene, chrysene and benzo (a) pyrene) were determined from the WBMs and associated drill cuttings obtained from varying depths(viz. 150, 300 and 600 m) from three offshore wells present in East coast of India. In both WBMs and drill cuttings, concentration of naphthalene was maximum i.e. 81.59 ± 2.73 and 39.87 ± 2.40 mg/kg respectively, while benzo (a) pyrene was minimum i.e. 0.19 ± 0.07 and 0.12 ± 0.03 mg/kg respectively. The WBMs contained significantly (p < 0.05) higher PAH concentration than drill cuttings. The individual PAH concentration significantly (p < 0.01) increased with increasing depth in each well.
authors.affiliation: EIRA Division, National Environmental Engineering Research Institute, Nagpur 440020, India. devaanshi.jagwani@gmail.com
authors.forename: Devaanshi
authors.initials: D
authors.lastname: Jagwani
authors.forename: Atul
authors.initials: A
authors.lastname: Kulkarni
authors.forename: Parth
authors.initials: P
authors.lastname: Shukla
authors.forename: Dilip S
authors.initials: DS
authors.lastname: Ramteke
authors.forename: Harjeet D
authors.initials: HD
authors.lastname: Juneja
mesh_terms: D004784:Environmental Monitoring; D019652:Extraction and Processing Industry / Q000706:statistics & numerical data; D019015:Geologic Sediments / Q000737:chemistry*; D007194:India; D059392:Petroleum Pollution / Q000032:analysis* / Q000706:statistics & numerical data; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical