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USE OF HILIC-CHROMATOGRAPHIC SEPARATION AND SOLID PHASE EXTRACTION FOR PREPARING AND ANALYZING PESTICIDES
USE OF HILIC-CHROMATOGRAPHIC SEPARATION AND SOLID PHASE EXTRACTION FOR PREPARING AND ANALYZING PESTICIDES
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机译:色谱分离和固相萃取用于农药的制备和分析
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摘要
An arrangement for preparing samples and analyzing pesticides in samples contains an HILIC chromatography column with a first pump for a predominately low-water and/or non-polar solvent; and SPE enrichment arrangement; a second chromatography column with a second pump for a predominantly water-rich and/or polar solvent; a detector; and a valve arrangement for controlling the stream of sample and matrix, which valve arrangement is designed in such a way that the sample stream, in a first switching state of the valve arrangement, can be conducted from the HILIC chromatography column to the SPE enrichment arrangement and, in a second switching state, the sample enriched in the SPE enrichment arrangement can be conducted in the opposite direction from the SPE enrichment arrangement through the second chromatography column to the detector.
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