title: Single-walled carbon nanohorn as new solid-phase extraction adsorbent for determination of 4-nitrophenol in water sample.
abstract: Single-walled carbon nanohorn (SWCNH) was developed as new adsorbent for solid-phase extraction using 4-nitrophenol as representative. The unique exoteric structures and high surface area of SWCNH allow extracting a large amount of 4-nitrophenol over a short time. Highly sensitive determination of 4-nitrophenol was achieved by linear sweep voltammetry after only 120s extraction. The calibration plot for 4-nitrophenol determination is linear in the range of 5.0x10(-8) M-1.0x10(-5) M under optimum conditions. The detection limit is 1.1x10(-8) M. The proposed method was successfully employed to determine 4-nitrophenol in lake water samples, and the recoveries of the spiked 4-nitrophenol were excellent (92-106%).
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China.
authors.forename: Shuyun
authors.initials: S
authors.lastname: Zhu
authors.forename: Wenxin
authors.initials: W
authors.lastname: Niu
authors.forename: Haijuan
authors.initials: H
authors.lastname: Li
authors.forename: Shuang
authors.initials: S
authors.lastname: Han
authors.forename: Guobao
authors.initials: G
authors.lastname: Xu
mesh_terms: D000327:Adsorption; D002138:Calibration; D002244:Carbon / Q000737:chemistry*; D005618:Fresh Water / Q000032:analysis; D009596:Nitrophenols / Q000032:analysis*; D052616:Solid Phase Extraction / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D009596:Nitrophenols; D014874:Water Pollutants, Chemical; D002244:Carbon; C024836:4-nitrophenol