Ultra-preconcentration of common herbicides in aqueous samples using solid phase extraction combined with dispersive liquid–liquid microextraction followed by HPLC–UV
2016 ◽
Vol 13
(6)
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pp. 1093-1104
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2007 ◽
Vol 1169
(1-2)
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pp. 63-69
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2012 ◽
Vol 40
(1)
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pp. 107
2009 ◽
Vol 32
(7)
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pp. 1069-1074
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