Author: Dimiter L. Tsalev
Publisher: CRC Press
ISBN: 9780849349997
Size: 69.29 MB
Format: PDF, ePub, Docs
Category : Science
Languages : en
Pages : 368
View: 7227
This new, self-contained volume covers in a critical, exhaustive, and in-depth manner the progress in AAS determinations of 55 chemical elements in 42 individual chapters, with an emphasis on the latest instrumental and methodological developments. These include Zeeman background correction, the Stabilized Temperature Platform Atomizer (STPA), flow-injection and continuous-flow approaches, slurry and solid sampling, efficient chemical modification, on-line sample pretreatment/enrichment, speciation, availability of QC materials, alternative analytical techniques, and more. A key to this vast application area is provided by well-organized tabulated information, including outlines of 782 selected AAS procedures for analysis of blood, serum, urine, hair, nail, teeth, tissues, food, and other relevant biological specimens. More than 2100 AAS papers are included in a unique bibliography of 3223 up-to-date references spanning the last 13 years.
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Author: Federico Noguerra
Publisher:
ISBN: 9781681174600
Size: 60.54 MB
Format: PDF
Category :
Languages : en
Pages : 242
View: 4426
Atomic absorption spectroscopy (AAS) is a spectroanalytical procedure for the quantitative determination of chemical elements using the absorption of optical radiation (light) by free atoms in the gaseous state. Atomic absorption is so sensitive that it can measure down to parts per billion of a gram (μg dm-3) in a sample. The technique makes use of the wavelengths of light specifically absorbed by an element. They correspond to the energies needed to promote electrons from one energy level to another, higher, energy level. Atomic absorption spectrometry has many uses in different areas of chemistry. Examining metals in biological fluids such as blood and urine, Monitoring our environment - e.g. finding out the levels of various elements in rivers, seawater, drinking water, air, petrol and drinks such as wine, beer and fruit drink. In some pharmaceutical manufacturing processes, minute quantities of a catalyst used in the process (usually a metal) are sometimes present in the final product. By using AAS the amount of catalyst present can be determined. Many raw materials are examined and AAS is extensively used to check that the major elements are present and that toxic impurities are lower than specified - e.g. in concrete, where calcium is a major constituent, the lead level should be low because it is toxic. By using AAS the amount of metals such as gold in rocks can be determined to see whether it is worth mining the rocks to extract the gold. Atomic Absorption Spectroscopy aims to cover all major topics which are required to equip scholars with the recent advancement in this field. The book provides a systematic treatment of combining flow injection methods with all fields of atomic absorption spectrometry (AAS) including flame, hydride generation and electrothermal AAS.
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Author: G. Schlemmer
Publisher: Springer Science & Business Media
ISBN: 9783764357702
Size: 47.31 MB
Format: PDF, Docs
Category : Science
Languages : en
Pages : 286
View: 7046
"One should rather go horne and mesh a net than jump into the pond and dive far fishes" (Chinese proverb) Recognizing the precise analytical question and planning the analysis according ly is certainly the first prerequisite for successful trace and ultratrace determina tions. The second prerequisite is to select the method appropriate to the analyti cal specification. The method itself consists of a set of available tools. The third prerequisite is that analysts and operators know the methods weH enough to enjoy challenging themselves as weH as the methods and are rewarded by the joy of high-quality data, fast and economical results and the conviction of having the analytical job under control. This skill is known among analysts or operators working with an exciting new and sometimes complicated analytical technique but is gradually lost on ce a technique becomes "mature" and a routine tool. Unfortunately, laboratory managers often do not allow sufficient training time for their analysts and technicians for "routine" techniques and thus miss an opportunity for motivating their co-workers and obtaining the full benefit of the equipment. Graphite furnace atomic absorption spectrometry (AAS) is one of the mature analytical techniques wh ich is seen as a routine method in most laboratories. More than 10,000 furnaces are operated in elemental trace and ultratrace analy ses in laboratories around the world today.
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Author: Jon A. Van Loon
Publisher: Elsevier
ISBN: 0323154867
Size: 19.47 MB
Format: PDF, ePub, Docs
Category : Science
Languages : en
Pages : 348
View: 596
Analytical Atomic Absorption Spectroscopy presents the theories, methods, and principles in absorption spectrometry in an easily readable fashion that would suit the practicing analyst. The book covers the general principles involved in atomic spectroscopy, such as atomization and optical systems; electronic signal processing; and calibration procedures and accuracy and precision. The text then moves on to the preparation, determination, and analysis of different substances, such as waters, geological materials, metals and alloys, air samples, petroleum products, industrial samples, and metal compounds. The book also covers developments in the different areas of atomic spectroscopy, such as radiation sources, spectrometers, detectors, and other instruments. The text is recommended for practitioners and experts in the field of atomic spectroscopy, especially those looking for a book that details theories, practices, and advancements in the subject.
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Author: Perkin-Elmer Corporation
Publisher:
ISBN:
Size: 27.80 MB
Format: PDF, ePub, Docs
Category : Absorption spectra
Languages : en
Pages :
View: 4048
