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APA Citation
Sha, O., Zhu, X., Feng, Y., & Ma, W. (2015). aqueous two-phase based on ionic liquid liquid–liquid microextraction for simultaneous determination of five synthetic food colourants in different food samples by high-performance liquid chromatography. Food chemistry, 174, 380–386. http://access.bl.uk/ark:/81055/vdc_100042328969.0x000030