IntroductionExtraction of pesticide residues from grains and grain products Clean-up of pesticide residue extracts from grains and grain products Gas chromatographic determination of organophosphate, pyrethroid and carbamate insecticides High-performance liquid chromatographic determination of organophosphate, pyrethroid and ca rbamate insecticides Conclusion References

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The principles and design of a Hadamard transform UV absorbance detector for liquid chromatography are outlined, and some spectra of aromatic compounds passing through its flow cell are presented. This approach could be valuable in providing a low-cost multi-wavelength detection method for liquid chromatography.