Provenience Analysis of Obsidians from the Central Peten Lakes Region, Guatemala

1985 ◽  
Vol 50 (3) ◽  
pp. 591-604 ◽  
Author(s):  
Prudence M. Rice ◽  
Helen V. Michel ◽  
Frank Asaro ◽  
Fred Stross
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Maya Lowlands ◽  
X Ray ◽  
Preclassic Period ◽  
Non Local ◽  
Time Periods ◽  
Middle Preclassic

A set of 296 obsidian artifacts from the lakes area of the Department of Peten, Guatemala, has been provenienced by X-ray fluorescence and neutron activation analysis. The obsidians come from socioeconomic contexts (primarily rural/domestic) and time periods—from the Middle Preclassic period, ca. 800 B.C., up to the time of Spanish contact, A.D. 1525—that have been poorly represented in previous Lowland provenience studies. Thus they provide new data on the acquisition and distribution of this important non-local commodity in the Maya Lowlands.

THE FIRST MAYA TRADE WARE? NEW DATA ON MIDDLE PRECLASSIC-PERIOD MARS ORANGE PASTE WARE FROM HOLTUN, GUATEMALA

2018 ◽  
Vol 29 (4) ◽  
pp. 821-827 ◽  
Author(s):  
Michael G. Callaghan ◽  
Daniel E. Pierce ◽  
William D. Gilstrap
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Short Distance ◽  
Maya Lowlands ◽  
The West ◽  
Preclassic Period ◽  
Production And Distribution ◽  
Middle Preclassic ◽  
Combined Data

This study reports on type: variety-mode classification, digital stereomicroscopy, petrography, neutron activation analysis, and previously published reports and characterizes production and distribution of Mars Orange Paste Ware in the Middle Preclassic-period Maya Lowlands. The sample consists of 2028 sherds of Mars Orange Paste Ware from Holtun, Guatemala, and 4105 sherds reported from sites in Central Belize and Peten Guatemala. The combined data suggest Mars Orange Paste Ware was a “short-distance” trade ware produced in the northeastern Maya Lowlands and distributed from Central Belize to the west.

A Review of Bromine Determination in Foods

1975 ◽  
Vol 58 (4) ◽  
pp. 711-716 ◽  
Author(s):  
Milton E Getzendaner
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Organic Compounds ◽  
Methyl Bromide ◽  
Ethylene Dibromide ◽  
X Ray ◽  
Instrumental Methods ◽  
Bromine Determination

Abstract Organic compounds containing bromine, including methyl bromide, ethylene dibromide, and l,2-dibromo-3-chloropropane, have been used extensively for the fumigation of foods, or soils in which foods grow, making it necessary to determine residues of bromine and bromine-containing organic compounds. A large number of methods for the determination of bromine in foods, as organic, inorganic, and combined total bromide, have been developed. In methods for organic bromide, the bromine is converted to the inorganic form for measurement by titration, photometry, or other means. In recent years, instrumental methods have been developed in which the total bromine in the sample is determined, regardless of the state in which it exists. X-ray fluorescence and neutron activation analysis are the 2 instrumental methods used most widely. Residue data are presented for some typical bromine-containing samples.

Comparison of SR-excited X-ray fluorescence analysis with neutron activation analysis for hair and fiber

1987 ◽  
Vol 12 (1) ◽  
pp. 211-220
Author(s):  
Naoki Saitoh ◽  
Takao Suzuki ◽  
Tohru Kishi ◽  
Atsuo Iida ◽  
Yohichi Gohshi
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Fluorescence Analysis ◽  
X Ray
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