title: Effects of Fe2O3, organic matter and carbonate on photocatalytic degradation of lindane in the sediment from the Liao River, China.
abstract: Fourteen sediment samples with different content of Fe2O3 were collected from the lower reaches of the Liao River in China. The photodegradation of lindane on the surfaces of these sediments was investigated to observe the effects of Fe2O3 and other photoinducable substances, such as TiO2 and organic substances, on photodegradation of lindane. A partial least-squares (PLS) analysis model was developed to find out the statistical relationship between the photodegradation and the contents of these photoinducable substances. It was concluded from the PLS analysis that inorganic carbon and organic carbon have negative effects, whereas Fe2O3 and TiO2 accelerate the photodegradation of lindane in the sediment samples when 365 nm UV light was used as light source. In all cases of the experiments, the photodegradation of lindane in the sediment samples were fitted for pseudo-first-order kinetics.
authors.affiliation: School of Environmental Science and Technology, Dalian University of Technology, Zhongshan Road 158-129, 116023 Dalian, PR China. xiequan@mail.dlptt.ln.cn
authors.forename: Xie
authors.initials: X
authors.lastname: Quan
authors.forename: Junfeng
authors.initials: J
authors.lastname: Niu
authors.forename: Shuo
authors.initials: S
authors.lastname: Chen
authors.forename: Jingwen
authors.initials: J
authors.lastname: Chen
authors.forename: Yazhi
authors.initials: Y
authors.lastname: Zhao
authors.forename: Fenglin
authors.initials: F
authors.lastname: Yang
mesh_terms: D002254:Carbonates / Q000737:chemistry*; D002384:Catalysis; D002681:China; D005296:Ferrous Compounds / Q000737:chemistry*; D005618:Fresh Water; D019015:Geologic Sediments / Q000737:chemistry*; D001556:Hexachlorocyclohexane / Q000737:chemistry* / Q000528:radiation effects; D007700:Kinetics; D016018:Least-Squares Analysis; D008433:Mathematics; D008962:Models, Theoretical; D009930:Organic Chemicals / Q000737:chemistry / Q000528:radiation effects; D010777:Photochemistry / Q000379:methods; D014025:Titanium / Q000737:chemistry; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000528:radiation effects
chemical_list: D002254:Carbonates; D005296:Ferrous Compounds; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D001556:Hexachlorocyclohexane; D014025:Titanium; C034236:ferrous oxide