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Solid-phase extraction-capillary electrophoresis (SPE-CE) is a technique whereby very dilute analytes may be selectively extracted from a sample matrix and concentrated on-line for analysis. This study describes the first phase in the development of a method exploiting this technique for the direct analysis of hypoglycemic drugs in urine. Effective separation and detection of six sulfonylurea drug...
Urinary estrogen levels are important for monitoring the normal pregnancy process as well as for the diagnosis of reproductive diseases. 17β-Estradiol and estrone are maintained at very low concentrations in urine and, therefore, are difficult to determine using standard chromatography with UV detection. In the present study, we describe a potential method for the determination of urinary estrogens...
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