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

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 showe...

Full description

Saved in:
Bibliographic Details
Published inChinese chemical letters Vol. 25; no. 3; pp. 415 - 418
Main Authors Subhani, Qamar, Huang, Zhong-Ping, Zhu, Zuo-Yi, Liu, Lu-Ye, Zhu, Yan
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2014
Subjects
Fluorescence
Ion chromatography
NaOH溶液
Photochemical derivatisation
Thiacloprid
光化学衍生
噻虫啉
在线
杀虫剂
水样
离子色谱法
荧光检测器
Photochemical derivatisation
Fluorescence
Ion chromatography
Thiacloprid
Online AccessGet full text

Cover

More Information
Summary: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 x 4 mm i.d; 13 p~m 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, SiN = 3） of 9.9 p~g]L. The procedure was applied with satisfactory results to the analysis of thiacloprid in ground and lake water samples. Pesticide average spiked recoveries ran~ed between 95.5% and 114.0%.
Bibliography: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 x 4 mm i.d; 13 p~m 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, SiN = 3） of 9.9 p~g]L. The procedure was applied with satisfactory results to the analysis of thiacloprid in ground and lake water samples. Pesticide average spiked recoveries ran~ed between 95.5% and 114.0%.
11-2710/O6
ThiaclopridPhotochemical derivatisationFluorescenceIon chromatography
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2013.11.014