Provides a comprehensive guide to the use of gas chromatography-mass spectrometry (GC-MS) on environmentally significant organic compounds This book presents a library of mass spectra of 1,725 biologically and environmentally important organic compounds, in the form of their trimethylsilyl derivatives (TMS), as well as their linear temperature programmed chromatographic retention indices, RI, whose values are in the range of 700-4700 index units. Of the compounds presented, more than 60% of compounds have not previously been characterized by their mass spectra, and more than 70% not previously been characterized by their RI values. Some of these compounds, never before analysed via MS and GC, were detected by the author's team in plant tissues. The first chapters of the book are devoted to the methodology and practice of sample preparation, as well as to mass spectrometry considerations. They contain the discussion of possible complications and limitations of the method. The book includes lists of chemical compounds in alphabetical order, as well as in the order of their retention indices which facilitates the search for parameters of interest. Every compound in the book includes a RI value, mass spectrum, CAS number (if available), molecular and structural formula, formula weight, chemical name and list of synonyms, as well the source of compounds used for registration of spectrum and RI value. <ul> <li>Features mass spectra and chromatographic retention indices of 1,725 organic substances in the form of their trimethylsilyl derivatives (TMS)</li> <li>Includes the CAS number, molecular and structural formula, formula weight, mass spectrum, chemical name and list of synonyms, and more for every compound covered within</li> <li>The first publication containing analytical parameters of high-boiling compounds such as glycosides, lignans, and phenylpropenoid glycerides with RI values >4000</li> </ul> GC-MS of Biologically and Environmentally Significant Organic Compounds will appeal to specialists in phytochemical analysis, food, and environmental chemistry, as well as other investigators dealing with GC or GC/MS analysis complex mixtures of organic compounds. The accompanying electronic database, "Biologically and Environmentally Important Organic Compounds - GCMS Library", will be published in mid-2020, ISBN: 978-1-119-60170-8.

GC-MS of Biologically and Environmentally Significant Organic Compounds: TMS Derivatives

Science & Math

Isidorov, Valery A.

Chemistry

wiley

The book offered to the reader's attention is the author's translation of a book published in Poland in 2013. The book is addressed to the lovers of wildlife and honey bees, and to everyone interested in beekeeping products, their composition and medicinal properties. For Western European and American readers, Chapters 4 and 7, containing information about practically unknown in the West unconventional but very valuable beekeeping products, may be of particular interest. 
The author's scientific interests extend not only to the chemical composition and the origin of propolis, honey and other bee products, but also to the bee health. Unfortunately, in recent decades the bee health has noticeably deteriorated, resulting in many difficulties in beekeeping. The last Chapter of the book is devoted to the bee health and possible ways of their treatment, avoiding synthetic drugs with their unwanted side effects. The author's work in recent years is connected with these problems and it is no coincidence that the chapter devoted to the bee health has turned out to be the most revised and extended in comparison to the Polish edition. 
In preparing this publication, photographs were used, kindly provided to me by the Polish beekeeper Mrs. Teresa Porankiewicz-Bartkowiak, to whom I express my sincere gratitude.

Honey Bee Alchemy. A contemporary look at the mysterious world of bees, hive products and health

Religion & Spirituality

Occult & Paranormal

Ibra & Nbb

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Books by Isidorov, Valery A.