7. Conclusion
Still widely used in laboratories and industry, molecular absorption spectrophotometry has benefited from technological improvements and powerful computing resources that have expanded its range of applications, especially when combined with near-infrared technology, which is often offered as an option in commercial spectrophotometers. The near-infrared range is the range of choice for the food industry, petrochemicals, etc.
This is a well-documented technique with numerous publications from manufacturers, universities, and organizations, available in particular on the Internet. Performance verification is easy, with certified methods and reference materials. It is fairly simple to implement – except for sample preparation in some cases! – and does not require any special equipment. Spectrophotometers are reasonably priced to purchase and operate.
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Conclusion
Bibliography
▪ Publications cited in the text
Standards
French Standardization Association AFNOR:
• Guide to the expression of measurement uncertainties. NF ENV 13005 (1999).
• Molecular Absorption Spectrophotometry – Vocabulary and General Information. T01-030 (December 1982).
• Analytical chemistry – Volume 1: analysis, fundamental standards – Volume 2: sampling, general methods of analysis and reagents, ISBN: 2-12-172911...
Regulations
In the field of UV-VIS molecular absorption spectrophotometry, there are many organizations that publish regulations or recommendations:
either in specific fields: US and EU Pharmacopeia for pharmacy;
either in general fields: ASTM, LNE, Eurachem, etc. for analysis methods and data processing, IUPAC for vocabulary;
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Manufacturers – Suppliers – Distributors
(Non-exhaustive list)
The contact details of UV-VIS spectrophotometer manufacturers can be found on specialized websites such as Globalspec http://www.globalspec.com or through search engines. This information is listed in the section below (please note that European manufacturers...
Websites
While the Internet is an extraordinary source of information, finding the right information is not always easy, particularly in scientific and technical fields. Information is generally searched for using search engines or meta search engines that aggregate results from several engines.
Two difficulties arise in this research:
the choice of keywords to launch...
Organizations
The contact details for learned societies and organizations involved in spectrophotometry are provided in the "Websites" section above. These organizations often publish free or paid journals and have a document library that can be accessed from their website.
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