Analytical Chemistry
(QC:71-142)
QD 96.A8 Qualitative Analysis. Special Methods and Types of Spectra, A-Z. Atomic
Spectra
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
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
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.