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| Trace analysis of anions in organic matrices by ion chromatography coupled with a novel reversed-phase column for on-line sample pretreatment |
| Ying Ying Zhonga,b, Wen Fang Zhoua, Xue Ling Zenga, Ming Li Yea, Yan Zhua |
a Department of Chemistry, Zhejiang University, Hangzhou 310028, China;
b Ningbo Entry-Exit Inspection and Quarantine Bureau, Ningbo 315012, China |
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Abstract An ion chromatography (IC) system coupled with on-line column-switching technique was used to determine anions of μg/g levels in organic chemicals of analytical reagent grade. A novel polystyrene-divinylbenzene-carbon nanotube (PS-DVB-CNT) stationary phase was utilized for matrix elimination. A calibration study was conducted by preparing and analyzing eight concentrations (between 10 and 5000 μg/L) of eight standards in deionized water. The linearity was between 0.9978 and 1. And the detection limits ranged from 1.54 μg/L to 10.02 μg/L. A spiking study was performed on two representative organic chemicals. The recoveries were between 84.3% and 119.6%.
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Received: 23 August 2010
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| Fund:This research was financially supported by National Natural Science Foundation of China (Nos. 20775070, J0830413), Zhejiang Provincial Natural Science Foundation of China (Nos. R4080124, Y4090104, Y4090078), and Zhejiang Qianjiang Project of Science and Technology for Competent People (No. 2008R10028). |
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Corresponding Authors:
Yan Zhu,E-mail address:zhuyan@zju.edu.cn
E-mail: zhuyan@zju.edu.cn
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