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Official Methods
U.S. EPA Methods
ASTM (American Society of Testing and Materials) Methods
ASTM E1645-01
Standard Practice for the Preparation of Dried Paint Samples by Hotplate or Microwave Digestion for Subsequent Lead Analysis
ASTM D5513-99
Standard Practice for Microwave Digestion of Industrial Furnace Feedstreams and Waste for Trace Element Analysis
ASTM D4309-96
Standard Practice for Sample Digestion Using Closed-Vessel Microwave Heating Technique for the Determination of Total Metals in Water
ASTM E1741-00
Standard Practice for Preparation of Airborne Particulate Lead Samples Collected During Abatement and Construction Activities for Subsequent Analysis by Atomic Spectrometry
These ASTM methods can be downloaded for a fee at www.astm.org
Books & Articles
Digestion Books
Clean Chemistry: Techniques for the Modern Laboratory
A Practical Guide to Clean Sample Preparation for Trace Metal Analysis
by Dr. Robert Richter - © 2003 Milestone Inc.
Your lab used to be clean enough ...
Advances in modern analytical instrumentation have made it possible to perform sub-ppb determinations on a routine basis. The analyte levels in the blank may be significant when compared to the sample, so the uncertainty of the blank measurement can obscure the accuracy of the result. Clean handling techniques are required for this type of analysis; your lab, and your methods, must be transformed. What steps do you need to take?
Clean chemistry is partly a matter of having the right equipment: ultra-pure reagents, vessels that will not contaminate your samples, air filtering systems, proper clothing, and so on. And clean chemistry is also a state of mind - a state of constant awareness. It involves knowing exactly what you are doing at any given moment, and how those actions will affect the analytical blank.
This book is a guide to creating the kind of lab you'll need to conduct trace-level chemistry. In these pages, clean chemistry expert Dr. Robert Richter will teach you:
- What an "analytical blank" is, and how to safeguard it
- How to control airborne contamination and static
- Which materials make the best lab vessels
- The best methods for cleaning your vessels
- How to obtain ultra-pure reagents
- How to minimize analyst-based contamination
- How to decompose or evaporate samples without altering their analyte concentration and more
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Microwave-Enhanced Chemistry
Clean Chemistry: Techniques for the Modern Laboratory
Fundamentals, Sample Preparation, and Applications
Edited by H.M. "Skip" Kingston and Stephen J. Haswell
© 1997 American Chemical Society
This book is an indication of the breadth of microwave-enhanced chemistry as a new branch of chemical science. Microwave radiation can be used in many fields of chemistry in addition to sample preparation, decomposition, and extraction. It is now commonly used in the synthesis of organic, organometallic, and inorganic compounds and catalysts. Microwave-assisted sample preparation has become a standard method in thousands of analytical chemical laboratories, and many other chemical manipulations are in the process of standardizing procedures that depend on microwave technology. This book was developed as an international reference text.
Microwave-Enhanced Chemistry reviews the fundamental literature, discusses the fundamental theory for supporting the development of sample preparation microwave methods and environmental and industrial applications, includes the primary reference that the supports the U.S. Environmental Protection Agency and other national and international standard microwave sample preparation methods, and details the new and emerging applications and instrumentation in this field. Fundamental databases are included to provide analysts with new reference information to support chemical analysis.
Web Links
SamplePrep Web at Duquesne University
http://www.sampleprep.duq.edu
A starting point for information and advice regarding analytical sample preparation, speciated analysis, trace analysis and microwave chemistry.
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