title: Seasonal and spatial distribution of nonylphenol in Lanzhou Reach of Yellow River in China.
abstract: Nonylphenol (NP) is known as an endocrine disruptor and consequently has drawn much environmental concern. This study focused on seasonal variation and spatial distribution of NP in various matrices including water, suspended particles, and sediment taken from Lanzhou Reach of Yellow River in China. NP was measured in July and November in 2004. Concentrations of NP in water ranged from 34.2 to 599.0 ng/l, in suspended particles from 49.6 to 2835.2 ng/g dry wt, and in sediment from 38.4 to 863.0 ng/g dry wt. In terms of most water and suspended particles samples, concentrations were higher in warmer seasons than in colder seasons. Good linear correlations (R(2)=0.90 in July, R(2)=0.97 in November) were obtained for NP concentrations between water and suspended particles. In terms of sediment samples, concentrations were higher in November than in July, probably due to greater deposition of suspended particles. Reasonable linear correlations (R(2)=0.60 in July, R(2)=0.79 in November) were obtained for NP concentrations between water and sediment.
authors.affiliation: College of Environmental Science and Engineering, Nankai University, 94 Weijin Road, Nankai District, Tianjin 300071, PR China.
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
authors.forename: Ping
authors.initials: P
authors.lastname: Wang
authors.forename: Weifeng
authors.initials: W
authors.lastname: Guo
authors.forename: Junxing
authors.initials: J
authors.lastname: Dong
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Shugui
authors.initials: S
authors.lastname: Dai
mesh_terms: D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D010636:Phenols / Q000032:analysis*; D045483:Rivers / Q000737:chemistry*; D012621:Seasons; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D010636:Phenols; D014874:Water Pollutants, Chemical; C025256:nonylphenol