title: Impact of PAH on biological health parameters of soils of an Indian refinery and adjoining agricultural area--a case study.
abstract: The present study is aimed at analysing and comparing different soil enzymes in soil samples of native contaminated sites of a Mathura refinery and adjoining agricultural land. Enzyme activities are considered as indicators of soil quality and changes in biogeochemical function due to management or perturbations. Soil samples were collected from the premises and nearby area of Mathura refinery, India. Biological health parameters (dehydrogenase, aryl esterase, aryl sulphatase, [Formula: see text]-glucosidase, alkaline phosphatase, acid phosphatase, lipase, laccase and catalase activity) were estimated in the soil samples. Among all the samples, sewage sludge soil showed maximum activity of enzymes, microbial biomass carbon and most probable number of polycyclic aromatic hydrocarbon (PAH) degraders in soils spiked with three- to four-ring PAHs at 50 ppm. Available phosphorus, potassium and nitrogen was also exceptionally high in this sample, indicating maximum microbial bioconversion due to presence of nutrients stimulating potent PAH-degrading microorganisms.
authors.affiliation: Division of Microbiology, Indian Agricultural Research Institute, New Delhi, 110012, India.
authors.forename: Priyanka
authors.initials: P
authors.lastname: Chaudhary
authors.forename: Shashi Bala
authors.initials: SB
authors.lastname: Singh
authors.forename: Smita
authors.initials: S
authors.lastname: Chaudhry
authors.forename: Lata
authors.initials: L
authors.lastname: Nain
mesh_terms: D000135:Acid Phosphatase / Q000032:analysis; D000383:Agriculture; D000469:Alkaline Phosphatase / Q000032:analysis; D001192:Arylsulfatases / Q000032:analysis; D015415:Biomarkers / Q000032:analysis; D002265:Carboxylic Ester Hydrolases / Q000032:analysis; D002374:Catalase / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods; D007194:India; D042845:Laccase / Q000032:analysis; D008049:Lipase / Q000032:analysis; D010088:Oxidoreductases / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000633:toxicity; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis* / Q000633:toxicity; D001617:beta-Glucosidase / Q000032:analysis
chemical_list: D015415:Biomarkers; D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants; D010088:Oxidoreductases; D042845:Laccase; D002374:Catalase; D002265:Carboxylic Ester Hydrolases; C019734:arylesterase; D008049:Lipase; D000469:Alkaline Phosphatase; D000135:Acid Phosphatase; D001192:Arylsulfatases; D001617:beta-Glucosidase