‏إظهار الرسائل ذات التسميات Chemical books. إظهار كافة الرسائل
‏إظهار الرسائل ذات التسميات Chemical books. إظهار كافة الرسائل

الثلاثاء، 6 سبتمبر 2011

Primer on Volatile organic compounds


Primer on Volatile organic compounds
Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary, room-temperature conditions. Their high vapor pressure results from a low boiling point, which causes large numbers of molecules to evaporate from the liquid or solid form of the compound and enter the surrounding air. An example is formaldehyde, with a boiling point of –19 ºC (–2 ºF), slowly exiting paint and getting into the air.
Many VOCs are dangerous to human health or cause harm to the environment. VOCs are numerous, varied, and ubiquitous. They include both man-made and naturally occurring chemical compounds. Anthropogenic VOCs are regulated by law, especially indoors, where concentrations are the highest. VOCs are typically not acutely toxic, but instead have compounding long-term health effects. Because the concentrations are usually low and the symptoms slow to develop, research into VOCs and their effects is difficult
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السبت، 3 سبتمبر 2011

Infrared Spectroscopy Fundamentals and Applications...Barbara Stuart

Infrared Spectroscopy Fundamentals and Applications...Barbara Stuart

Provides an introduction to those needing to use infrared spectroscopy for the first time, explaining the fundamental aspects of this technique, how to obtain a spectrum and how to analyze infrared data covering a wide range of applications.

* Includes instrumental and sampling techniques
* Covers biological and industrial applications
* Includes suitable questions and problems in each chapter to assist in the analysis and interpretation of representative infrared spectra

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الجمعة، 2 سبتمبر 2011

Handbook for the Chemical Analysis of Plastic and Polymer Additives



Handbook for the Chemical Analysis of Plastic and Polymer Additives

his handbook provides a detailed reference for the analysis of the additives that are most widely used in plastics and polymers. Its unique combination of comprehensive chromatograms, mass spectral data, and analytical data — in addition to environmental perspectives and regulations issued by the FDA, USEPA, EU agencies, and other groups — facilitates the analyst's ability to extract, identify, and quantify additives in finished goods using common and readily available laboratory techniques. This is an ideal reference for monitoring plastics for regulatory or internal compliance, as well as for analyzing, troubleshooting, developing, or improving upon application-specific compounding practices.
From the Preface: “...This handbook's primary aim is to provide the tools to help a bench chemist to obtain a more complete listing of additives present in a particular matrix....We provide information on analyzing polymers through thermal desorption, and the use of GC with a mass selective detector (MSD). Many compounds break apart either during extraction or analysis, so identification by key fragments, and typical moieties for the final compound is critical. The use of the GC/MS system allows the analyst to characterize a compound based on the utilization of these fragments or moieties...”
Target Audience: Analysts, scientists and researchers in the food, pharmaceutical, biotechnology, chemical, polymer and plastic, petroleum, and medical device industries.

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الخميس، 1 سبتمبر 2011

Forgotten Chemistry


Forgotten Chemistry

Here’s a self-teaching review book for students who are preparing to take standardized tests, and for adults who need to brush up on principles of inorganic and organic chemistry for personal or job-related needs. Forgotten Chemistry is set up as a workbook with 15 study units. Topics covered include chemical equations, the periodic table, organic chemistry, acid–base theory, chemical calculations, and much more. Hundreds of practice and review questions are presented with answers and explanations. Includes charts and diagrams

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الثلاثاء، 30 أغسطس 2011

Chemical Composition of Everyday Products


Chemical Composition of Everyday Products

Chemicals, both helpful and harmful, affect our everyday lives. From cosmetics to medications to cleansers to lighting, automotive, and office products, each is composed of a complex blending of elements to perform a specific task. This book analyzes over 100 groups of products, identifying the specific chemical composition of a product, its historical use, how it functions, and any associated environmental and/or human health issues. Ten laboratory exercises provide students with the opportunity to observe these chemicals in action. Readers will learn which chemical elements are in everyday products and how they may affect health and environment, assisting them in making educated choices as consumers.
Chemicals, both helpful and harmful, affect our everyday lives. From cosmetics to medications to cleansers to lighting, automotive, and office products, each is composed of a complex blending of elements to perform a specific task. This book analyzes over 100 groups of products, identifying the specific chemical composition of a product, the historical use of the product, how it functions, and any associated environmental and/or human health issues. Ten laboratory exercises provide students with the opportunity to observe these chemicals in action. Readers will learn which chemical elements are in everyday products and how they may affect health and environment, assisting them in making educated choices as consumers.
Products analyzed include: Soaps and laundry products; cosmetics and bathroom products; health and medical products; baby products; cleaning products; lighting; common household and lawn products; automotive and general repair products; common materials [paper, plastic cement, spray paint] and office supply products.

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