Research on the Determination of 10 Industrial Dyes in Foodstuffs.An efficient method was developed for the simultaneous determination of 10 industrial dyes (basic orange 2, basic orange 21, basic orange 22, acid orange II, auramine, basic rhodamine B and Sudan I-IV) in the foodstuffs using high-performance liquid chromatography coupled with diode array detector. 
high-performance liquid chromatography
Research on the Determination of 10 Industrial Dyes in Foodstuffs.An efficient method was developed for the simultaneous determination of 10 industrial dyes (basic orange 2, basic orange 21, basic orange 22, acid orange II, auramine, basic rhodamine B and Sudan I-IV) in the foodstuffs using high-performance liquid chromatography coupled with diode array detector. 
diode array detector
Samples were extracted with acetonitrile and cleaned up on a solid phase extraction cartridge using HLB. 
solid phase extraction cartridge