Recent advances in analytical chemistry have turned it into a virtually unrecognizable science compared to a few decades ago, when it lagged behind other sciences and techniques. However, advances in analytical science have been far from universal: while innovations in instrumentation and data acquisition and processing systems have reached unprecedented levels thanks to parallel breakthroughs in computer science and chemo metrics, progress in preliminary operations has been much slower despite their importance to analytical results. Thus, such clear trends in analytical process development as automation and miniaturization have not reached preliminary operations to the same extent, even though this area is pro bably in the greatest need. Improvement in preliminary operations is thus an urgent goal of analytical chemistry on the verge of the twenty first century. Increased RaD endeavours and manufacture of commercially available automatic equipment for implementation of the wide variety of operations that separate the uncollected, unmeasured, untreated sample from the signal measuring step are thus crucial on account of the wide variability of such operations, which precludes development of all-purpose equipment, and the complexity of some, particularly relating to solid samples. Supercritical fluid extraction opens up interesting prospects in this context and is no doubt an effective approach to automatioI1 and mini aturization in the preliminary steps of the analytical process. The dramatic developments achieved in its short life are atypical in many respects.Results obtained in the analysis of coat fibres by on-line coupled SFE/SFC Sample Weight Analyte Area Oil/wax 110. (mg) (%) ratio 1 20 Waxes 32.63 2.1 Oils 67.36 2 20 Waxes 31.00 2.2 Oils 69.00 3 30 Waxes 33.26 2.0 Oils 66.23 4 30 anbsp;...
|Title||:||Analytical Supercritical Fluid Extraction|
|Author||:||Maria D. Luque de Castro, Miguel Valcarcel, Maria T. Tena|
|Publisher||:||Springer Science & Business Media - 2012-12-06|