Zhu Shuyun, Niu Wenxin, Li Haijuan, Han Shuang, Xu Guobao
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China.
Talanta. 2009 Oct 15;79(5):1441-5. doi: 10.1016/j.talanta.2009.06.011. Epub 2009 Jun 12.
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%).
单壁碳纳米角（SWCNH）被开发为一种新型吸附剂，用于以4-硝基苯酚为代表的固相萃取。SWCNH独特的外部结构和高表面积使其能够在短时间内萃取大量的4-硝基苯酚。仅经过120秒的萃取后，通过线性扫描伏安法实现了对4-硝基苯酚的高灵敏度测定。在最佳条件下，用于测定4-硝基苯酚的校准曲线在5.0×10⁻⁸ M至1.0×10⁻⁵ M范围内呈线性。检测限为1.1×10⁻⁸ M。所提出的方法成功用于测定湖水样品中的4-硝基苯酚，加标4-硝基苯酚的回收率良好（92 - 106%）。
