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Application of hollow‐fiber‐assisted liquid‐phase microextraction to identify avermectins in stream water using MS/MS
Author(s) -
Park JongHyouk,
Abd ElAty A. M.,
Rahman Md. Musfiqur,
Choi JeongHeui,
Shim JaeHan
Publication year - 2013
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201300136
Subject(s) - chromatography , extraction (chemistry) , repeatability , chemistry , abamectin , solvent , fiber , avermectin , pesticide , medicine , organic chemistry , anatomy , agronomy , biology
In this study, a hollow‐fiber‐assisted liquid‐phase microextraction ( HF ‐ LPME ) technique coupled with LC – MS / MS is described to detect avermectins (abamectin, ivermectin, moxidectin, and doramectin) in stream water. An Accurel polypropylene membrane was used as the hollow fiber, and dihexyl ether was used as the extraction solvent. The optimal extraction conditions for HF ‐ LPME were 4 cm fiber length, 45 min extraction time, 200rpm, and 1 min desorption time with methanol as the desorption solvent. The linear range was 0.15–100 ng/mL ( r 2 = 0.994–0.998), and the LOD and LOQ were 0.15 and 0.5 ng/mL, respectively. Recovery rates were determined at 1, 5, and 10 ng/mL, and the results were in the range of 80.1 to 93.7%. The intraday and interday repeatability ranged from 2.8 to 8.0% and from 6.1 to 13.3%, respectively. The HF ‐ LPME method developed was applied to detect avermectins in stream water samples collected from 14 different sites near livestock farms located in Honam area, Republic of Korea; however, none of the samples contained avermectin residues. HF ‐ LPME combined with a LC – MS / MS method was successfully applied for an environmentally friendly identification of avermectins in water samples. HF ‐ LPME represents an attractive approach for conventional liquid–liquid extraction.