Analytical Chemistry

(QC:71-142)
Q--ScienceR-MedicineS-AgricultureT-TechnologyU-MilitaryV-Naval


QD 96.A8 Qualitative Analysis. Special Methods and Types of Spectra, A-Z. Atomic Spectra

NIST Atomic Spectroscopic Database (Version 1.1)

Summary:
NIST Atomic Spectroscopic Database (Version 1.1) "...provides access and search capability for critically evaluated data on atomic energy levels, wavelengths, and transition probabilities that are reasonably up-to-date. The Atomic Energy Levels Data Center and the Data Center on Atomic Transition Probabilities and Line Shapes have carried out these critical compilations."
At the top of the site are links to a new version of the site (1.1), a list of the data compilers, as well as a list of database developers. Similarly, links are provided to all facilities described in the opening narrative: (1) Atomic Energy Levels Data Center; (2) Data Center on Atomic Transition Probabilities and Line Shapes; (3) Physics Laboratory (of NIST); and (4) NIST, National Institute of Standards and Technology. Within the main page are three possible query types: (1) get holdings (by element); (2) get holdings (by periodic table); and (3) get data.
"Get holdings (by element)" opens to reveal a query page with four possible kinds of data searches: (1) energy levels (EL); (2) transition probabilities (TP); (3) wavelengths (WL); and (4) any. Users should enter an element name within its field and enter a spectrum number. The resulting page will feature links to : (1) a description of the columns; (2) main menu; (3) references; and (4) ground states and ionization potentials. Within the results page are columns of data, offering, left to right: spectrum, NUM EL, NUM WL, and NUM TP. Within the spectrum column, users can select an item to reveal a query page based on energy levels data. This search page then produces a results page, offering top links identical to those noted above, as well as data in column form, presenting (left to right); spectrum, configuation, term, level, and leading percentages. "Get holdings (by periodic table)" offers a data type selection page (EL, TP, WL, or any); selecting a highlighted link from the resulting periodic table then reveals the full results page with top links and columns of data. Items within the first column are links to further data.
"Get data" allows users to select a data type (EL, WL, TP, or any); users should then fill in the resulting query page. The results page reflects a set of top links and data in columns. Elements within the first column access additional data. At the bottom of the site's main page are links to: (1) Ground States and Ionization energies; (2) references; (3) help; (4) disclaimer; (5) e-mail creator; (6) Bibliography Database on Atomic Transition Probabilities; and (7) Spectrum of Platinum Lamp for Ultraviolet Spectrograph Calibration. The site is maintained by the Physics Laboratory of the National Institute for Standards and Technology (NIST); Boulder, Colorado.
To Search:
Select query type from main page; select data type. Fill in applicable query page; results page offers a set of top links and data, which provide access to additional information.

QD 96.N8 Qualitative Analysis. Nuclear Magnetic Resonance Spectroscopy

NMR Periodic Tables

Summary:
The NMR Periodic Tables is a NMRWeb general information resource, sponsored by the Department of Chemistry, the University of York. The site offers four major versions of the periodic table, each specifying particular data for isotopes.
Users have access to four periodic table versions, organized by: (1) atomic number order; (2) NMR frequency order; (3) nucleus name order; and (4) Spin Quantum number order. In each case, elements are ordered by the major factor selected; users should scroll to view the matching table. For each displayed table of NMR information on isotopes, the user will find: (1) atomic number; (2) element abbreviation; (3) name of element; (4) NMR receptivity; (5) spin; and (6) relative frequency (Mhz). Depending on the table version selected, this information will be presented in an order which reflects the organization focus selected in the site's main page.
At the bottom of the site's main page are links to NMR general information, the University of York NMR homepage, the University of York, and the Department of Chemistry, University of York. The site is sponsored by the Department of Chemistry, the University of York; UK.
To Search:
Select table version from site's main page; scroll to view contents.

QD 96.X2 Qualitative Analysis. X-Ray Spectroscopy

X-Ray Emission Lines

Summary:
X-Ray Emission Lines is a division of the X-Ray WWW server, the "...repository of the COREX bibliography and database, the Henke atomic scattering factors, and other information of interest to x-ray spectroscopists." The server is housed within the Department of Physics at Uppsala University, Sweden. The present site is an information source, devoted to K-level and L-level emission lines in KeV.
Within the site, users will find 95 elements identified in the table, viewed by scrolling. Noted left to right, columns within the table reflect: (1) number; (2) element (abbreviation); (3) Ka2; (4) Kb1; (5) La1; (6) La2; (7) Lb1; (8) Lb2; and (9) Lg1. All data provided within the table comes from the article, "X-Ray Wavelengths," written by J.A. Bearden, published in Review of Modern Physics, January 1967, pp. 86-99.
At the bottom of the table is the citation for presented data. The site is sponsored by the Department of Physics; Uppsala University; Sweden.
To Search:
Scroll to view site contents.
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