ABSTRACT
Kava lactones, which are present in the intoxicating Pacific Island drink, kava, have now been detected in a number of archaeological artefacts using selected-ion monitoring techniques in conjunction with gas chromatography/electron impact-mass spectrometry. Thus it is now possible to link unequivocally kava drinking, a major aspect of the ceremonial culture of many Pacific societies, to the archaeological record. In addition, a new variation of the kava lactone skeleton was tentatively identified in the form of 7,8-dihydro-5,6-dehydrokawain and 7,8-dihydro-5,6-dehydromethysticin.
Subject(s)
Archaeology , Beverages/analysis , Plant Extracts/chemistry , Fiji , Gas Chromatography-Mass Spectrometry , Kava , Lactones/analysis , Plants, Medicinal , VanuatuABSTRACT
The concentration of 137Cs was determined by gamma spectrometry in soils and surface-deposited volcanic sublimates from various climatic locations on the islands of Hawaii, Oahu and Maui. A distinct pattern of higher concentrations on the wetter windward sides of the islands and a correlation between 137Cs concentration and amount of rainfall were observed, which confirm the source of the 137Cs as atmospheric fallout. In the soils, the concentrations measured (to 1.93 pCi/g) are within the range reported for the continental United States and other mid-latitude locations in the northern hemisphere. In the basaltic lavas, the concentration of 137Cs was found to be variable but was overall very low, and is apparently controlled by the porosity and permeability of the lavas in addition to rainfall.
