Sample preparation of ring-less tropical trees for δ<sup>18</sup>O measurement in isotope dendrochronology
نویسندگان
چکیده
منابع مشابه
Dendrochronology and Geochemistry of Long Island Trees
To help understand the effect of short term climatic changes on ring width variations of trees on Long Island, time series were performed on 6 Liriondendrin tuliperfera (tulip poplars) and 1 white oak from Caumsett State Park, and 6 Pinus rigidas (pitch pines) from Sears Bellows and Hubbard County Parks. Prolonged drought periods on Long Island occur during years 1927-1932, 1960-1970 and 1980-1...
متن کاملMethylmercury measurement in whole blood by isotope-dilution GC-ICPMS with 2 sample preparation methods.
BACKGROUND Despite its known toxicity, methylmercury is rarely measured directly in clinical studies; instead, conclusions are based on total mercury measurements. We have developed isotope-dilution-based methods for methylmercury-specific analysis of whole blood by coupled gas chromatography-inductively coupled plasma mass spectrometry (GC-ICPMS). METHODS We analyzed animal and human blood s...
متن کاملTree-ring isotope records of tropical cyclone activity.
The destruction wrought by North Atlantic hurricanes in 2004 and 2005 dramatically emphasizes the need for better understanding of tropical cyclone activity apart from the records provided by meteorological data and historical documentation. We present a 220-year record of oxygen isotope values of alpha-cellulose in longleaf pine tree rings that preserves anomalously low isotope values in the l...
متن کاملTree-ring Analysis of Arbutus menziesii: Suitability for Dendrochronology
In order to establish an estimate of the ages of large Pacific madrone (Arbutus menziesii) trees growing atop the bluffs on Magnolia Boulevard in Seattle, Washington, I obtained stump-discs from madrones cut by the Seattle Parks Department in June 1994. Each disc was sectioned into smaller pieces to allow processing with standard woodworking techniques. After initial processing, each slab was s...
متن کاملComparison of sample preparation methods for stable isotope analysis of dissolved sulphate in forested watersheds.
Pretreatment methods for measuring stable sulphur (δ(34)S) and oxygen (δ(18)O) isotope ratios of dissolved sulphate from watersheds have evolved throughout the last few decades. The current study evaluated if there are differences in the measured stable S and O isotope values of dissolved sulphate from forested watersheds when pretreated using three different methods: Method 1 (M1): adsorb sulp...
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ژورنال
عنوان ژورنال: Tropics
سال: 2018
ISSN: 0917-415X,1882-5729
DOI: 10.3759/tropics.ms17-09