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Quantification of f...
Quantification of four ionophores in soil, sediment and manure using pressurised liquid extraction
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- Bak, Søren Alex (author)
- Eurofins Denmark A/S, Environment, Vejen,Eurofins Denmark A/S, Environment, Vejen
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- Hansen, Martin (author)
- Stanford University
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Pedersen, Kenneth Munk (author)
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Halling-Sørensen, Bent (author)
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- Björklund, Erland (author)
- Environmental Analytical Laboratory,Miljöanalytiskt laboratorium (MoLab)
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(creator_code:org_t)
- Elsevier, 2013
- 2013
- English 6
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In: Journal of Chromatography A. - : Elsevier. - 0021-9673 .- 1873-3778. ; 1307:September, s. 27-33
- Related links:
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https://doi.org/10.1...
Abstract
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- A multi-residue pressurised liquid extraction (PLE) methodology has been established for the determination of the four ionophores: lasalocid, monensin, salinomycin and narasin in solid environmental matrices. The PLE methodology is combined with solid phase extraction as clean-up using liquid chromatography coupled to tandem mass spectrometry applying electrospray ionisation for detection. The samples were freeze-dried prior to extraction. The absolute recoveries for soil and sediment ranged from 71 to 123% (relative standard deviation (RSDs) below 16%) and in the range 94–133% (RSDs 9–35%) for poultry manure. The final method allowed for the detection of four ionophores down to a few hundred ng kg−1 in natural solid matrices with limit of quantifications (LOQs) being 0.96, 0.87, 0.98, and 0.64 μg kg−1 in soil for lasalocid, monensin, salinomycin, and narasin, respectively. Corresponding LOQs in sediment were 1.28, 1.34, 1.39, and 0.78 μg kg−1 for the respective ionophores, while in manure the LOQs were 0.98,1.01, 1.45, and 1.01 μg kg−1.
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