A critical review of nuclear activation techniques for the determination of trace elements in atmospheric aerosols, particulates and sludge samples (Technical Report)

1992 ◽  
Vol 64 (7) ◽  
pp. 991-1014 ◽  
Author(s):  
R. Dams
Keyword(s):  
Trace Elements ◽  
Atmospheric Aerosols ◽  
Critical Review ◽  
Nuclear Activation ◽  
Technical Report

Critical Review on the Analytical Methods for the Determination of Sulfur and Trace Elements in Crude Oil

2019 ◽  
Vol 50 (2) ◽  
pp. 161-178 ◽  
Author(s):  
M. A. Gab-Allah ◽  
Emad. S. Goda ◽  
A. B. Shehata ◽  
Heba Gamal
Keyword(s):  
Trace Elements ◽  
Crude Oil ◽  
Critical Review ◽  
Analytical Methods

Determination of trace elements bound to soil and sediment fractions (IUPAC Technical Report)

2004 ◽  
Vol 76 (2) ◽  
pp. 415-442 ◽  
Author(s):  
József Hlavay ◽  
T. Prohaska ◽  
M. Weisz ◽  
W. W. Wenzel ◽  
G. J. Stingeder
Keyword(s):  
Trace Elements ◽  
Chemical Speciation ◽  
Sampling Error ◽  
Speciation Analysis ◽  
Solid Samples ◽  
Sampling Protocols ◽  
Technical Report ◽  
Sequential Extraction Method ◽  
Mineralogical Phases

This paper presents an overview of methods for chemical speciation analysis of elements in samples of sediments and soils. The sequential leaching procedure is thoroughly discussed, and examples of different applications are shown. Despite some drawbacks, the sequential extraction method can provide a valuable tool to distinguish among trace element fractions of different solubility related to mineralogical phases. The understanding of the speciation of trace elements in solid samples is still rather unsatisfactory because the appropriate techniques are only operationally defined. The essential importance of proper sampling protocols is highlighted, since the sampling error cannot be estimated and corrected by standards. The Community Bureau of Reference (BCR) protocols for sediment and soil give a good basis for most of the solid samples, and the results can be compared among different laboratories.

Review of species of the Stachys section Satureoides (Lamiaceae)

2018 ◽  
pp. 125-129
Author(s):  
T. V. Krestovskaya
Keyword(s):  
Geographical Distribution ◽  
Critical Review ◽  
Corolla Tube ◽  
Infraspecific Taxa

On the base of a critical review of the material kept in the most of main European and some Asian Herbaria, a synopsis of the genus Stachys L. section Satureoides R. Bhattacharjee is given. The description of the section is enlarged (calyx 5–10(15)-veined, upper floral leaves often with short spinescent tip, stamens slightly exserted from the corolla tube). The section is represented by 4 species distributed in Turkey, Syria, Iraq and Iran. The keys for determination of its species and infraspecific taxa are compiled. The data on main synonyms, ecology, geographical distribution and types are given. The lectotypes of S. satureioides Montbret et Aucher ex Benth., S. ramosissima Montbret et Aucher ex Benth., S. burgsdorffioides (Benth.) Boiss. and S. burgsdorffioides subsp. ladanoides Hand.-Mazz. are designated.

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