2. Instrumentation
In this section, we will only discuss spectrophotometers that can be used to obtain spectra and measure absorbance, which excludes simple colorimeters or photometers with a fixed wavelength.
2.1 Component organization
Devices can be classified into two categories:
single-beam devices, which are further subdivided into devices with direct optical mounting or inverted optical mounting;
dual-beam devices with direct optical mounting.
The choice of device will depend on the problems to be solved: it can be said that dual-beam devices are the most effective in terms of various analysis possibilities and metrological characteristics; they are generally...
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Instrumentation
Instrumental parameters
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;
...
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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