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Analysis of insecticide thiacloprid by ion chromatography combined with online photochemical derivatisation and fluorescence detection in water samples

Qamar Subhani ,  Zhong-Ping Huang ,  Zuo-Yi Zhu ,  Lu-Ye Liu ,  Yan Zhu

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Citation:  Qamar Subhani, Zhong-Ping Huang, Zuo-Yi Zhu, Lu-Ye Liu, Yan Zhu. Analysis of insecticide thiacloprid by ion chromatography combined with online photochemical derivatisation and fluorescence detection in water samples[J]. Chinese Chemical Letters, 2014, 25(3): 415-418. doi: 10.1016/j.cclet.2013.11.014 shu

Analysis of insecticide thiacloprid by ion chromatography combined with online photochemical derivatisation and fluorescence detection in water samples

    • 通讯作者: Yan Zhu,
  • 基金项目:

    Equipment Development Special of China (No. 2012YQ09022903). (No. 2012YQ09022903)

摘要: This study describes a novel application of ion chromatography coupled with post-column photochemically induced fluorimetry derivatisation in alkaline medium and fluorescence detection (IC-hv-FD) for the determination of neonicotinoid pesticide, thiacloprid. In an aqueous medium, this compound showed fluorescence with an excitation maximum at 236 nm and an emission maximum at 353 nm. The 10 mmol/L NaOH with 10% (v/v) acetonitrile solution pumped at flow rate of 1.0 mL/min was used for the chromatographic elution to isocratically separate thiacloprid on an Ion Pac®AS 11 (250 mm×4 mm i.d; 13 mm particle size, Dionex) anion-exchange column. The linear concentration range of application was 0.04-10.0 mg/L, with a relative standard deviation (RSD, n = 7) of 1.7% (for a level of 2.0 mg/L) and detection limit (LOD, S/N = 3) of 9.9 mg/L. The procedure was applied with satisfactory results to the analysis of thiacloprid in ground and lake water samples. Pesticide average spiked recoveries ranged between 95.5% and 114.0%.

English

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  • 发布日期:  2013-12-04
  • 收稿日期:  2013-09-02
  • 网络出版日期:  2013-10-25
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