Analytical Performance of Accelerator Mass Spectrometry and Liquid Scintillation Counting for Detection of14C-Labeled Atrazine Metabolites in Human Urine

1998 ◽  
Vol 70 (16) ◽  
pp. 3463-3469 ◽  
Author(s):  
S. Douglass Gilman ◽  
Shirley J. Gee ◽  
Bruce D. Hammock ◽  
John S. Vogel ◽  
Kurt Haack ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Human Urine ◽  
Accelerator Mass Spectrometry ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
Analytical Performance

scholarly journals A Review of the Radiocarbon Dates for the Afanasyevo Culture (Central Asia): Shifting Towards the “Shorter” Chronology

Radiocarbon ◽  
2018 ◽  
Vol 61 (1) ◽  
pp. 243-263 ◽  
Author(s):  
Andrey V Poliakov ◽  
Svetlana V Svyatko ◽  
Nadezhda F Stepanova
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
Radiocarbon Dates ◽  
Archaeological Data ◽  
Depth Analysis ◽  
Over Time ◽  
Ams Dates

ABSTRACTThis article provides a summary and in-depth analysis of all existing radiocarbon (14C) dates for the Afanasyevo Culture of the Paleometal period. The previous “long” chronology of the culture was widely criticized and contradicted many archaeological observations. The exceedingly wide ranges of the liquid scintillation counting (LSC) dates from bone samples produced in several laboratories and the systematically older ages for the wood/charcoal samples finally reveal the shortcomings of the conventional “long” chronology. From accelerator mass spectrometry (AMS), the Afanasyevo burials of the Altai are dated to the 31st–29th century BC, whereas those of the Middle Yenisei Region to the 29th–25th century BC, which confirms the relatively earlier age of the Altai monuments. The “short” chronology removes the incompatibility of deriving the Afanasyevo Culture from the Yamnaya Culture, which previously appeared “younger” than the Afanasyevo, and also contradictions with the archaeological data. It also explains the small number of sites, the small size of the cemeteries and the lack of the internal periodization. We can now clearly move, from the earlier understanding that the Afanasyevo chronology is too broad, towards a different perception. The new AMS dates only represent a “core” for the Afanasyevo chronology, which cannot be narrowed down, but could be slightly expanded over time.

Measuring 14C Concentration in Wine to Monitor Global Distribution of 14C

Radiocarbon ◽  
2013 ◽  
Vol 55 (3) ◽  
pp. 1827-1833
Author(s):  
Hirohisa Sakurai ◽  
Saori Namai ◽  
Emiko Inui ◽  
Fuyuki Tokanai ◽  
Kazuhiro Kato ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Correlation Coefficient ◽  
Southern Hemisphere ◽  
Northern Hemisphere ◽  
Accelerator Mass Spectrometry ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Fossil Fuel ◽  
Scintillation Counting ◽  
Northern And Southern Hemispheres

Using liquid scintillation counting (LSC) and accelerator mass spectrometry (AMS), radiocarbon concentrations were measured for wine from 8 wineries located in 7 countries in the Northern and Southern hemispheres. The 14C concentrations of ethanol and residual materials in the wine were correlated (correlation coefficient 0.82). The δ14C measurements of wine samples from the mid-latitudes in the Northern Hemisphere were approximately 1l% lower than the extrapolations from Schauinsland data, suggesting a local fossil fuel effect. δ14C measurements from the wine samples from the Southern Hemisphere were higher than those from the Northern Hemisphere. The offsets of the 4 wine δ14C measurements were significant, with values between approximately 8% and 15%. Because the harvest years of the mixed grapes were estimated to be 7–12 yr older than their vintage years, this leads to a caveat when determining the 14C concentrations of the year using the wine vintage.

scholarly journals The Application of ICELS Systems for Radiocarbon Dating

Radiocarbon ◽  
2010 ◽  
Vol 52 (4) ◽  
pp. 1661-1666 ◽  
Author(s):  
Konrad Tudyka ◽  
Anna Pazdur ◽  
Páll Theodórsson ◽  
Adam Michczyński ◽  
Jacek Pawlyta
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Liquid Scintillation Counting ◽  
Radiocarbon Dating ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
Counting Time ◽  
First Results ◽  
High Degree ◽  
Larger Sample

Liquid scintillation counting (LSC) for radiocarbon dating is a less expensive method than accelerator mass spectrometry (AMS), provides a high degree of accuracy, and is less prone to contamination due to the larger sample sizes. However, to obtain high precision, a long counting time is needed. The Gliwice Radiocarbon Laboratory is seeking to obtain an increased counting capacity with 2–3 mL benzene samples than we presently can achieve with our 2 Quantulus systems. We are therefore investigating the possibility of using a simple, single-phototube LS system (ICELS) for dating samples younger than 5000 yr. We present the first results of this investigation, including the measurement of 3 VIRI and 3 FIRI intercomparison samples.

scholarly journals Dating of Ancient Icons from Kiev Art Collections

Radiocarbon ◽  
2001 ◽  
Vol 43 (2B) ◽  
pp. 1065-1075 ◽  
Author(s):  
N Kovalyukh ◽  
J van der Plicht ◽  
G Possnert ◽  
V Skripkin ◽  
L Chlenova
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
Art Collections ◽  
Radiocarbon Dates ◽  
Dating Methods ◽  
Ams Dating ◽  
First Time

Icon painting in the Ukraine is rooted in the Byzantine culture, after the conversion to the Christian religion. During the medieval epoch, Kiev became the artistic center for highly skilled icon painters. The icons were painted on wooden boards, specially made for this purpose. Historic dating of some even well-known icons is uncertain or not precise. Here we present for the first time radiocarbon dates for selected icons. Both liquid scintillation counting (LSC) and accelerator mass spectrometry (AMS) dating methods were applied, allowing intercomparison.

LIQUID SCINTILLATION COUNTING (LSC)—PAST, PRESENT, AND FUTURE

Radiocarbon ◽  
2021 ◽  
pp. 1-14
Author(s):  
Alan G Hogg ◽  
Gordon T Cook
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
The Past

ABSTRACT Radiocarbon (14C) dating by liquid scintillation (LS) spectroscopy (also known as LS counting or LSC) provides an alternate method of 14C analysis where accelerator mass spectrometry (AMS) analysis is less desirable. The past, present, and future applications of the method are discussed.

3H and 14C measurements of the irradiated graphite from the decommissioned VVR-S reactor in NIPNE Bucharest

2018 ◽  
Vol 33 (3) ◽  
pp. 431-436 ◽  
Author(s):  
Mihaela Enachescu ◽  
Catalin Stan-Sion ◽  
Alexandru Razvan Petre ◽  
Cristian Postolache ◽  
Viorel Fugaru
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Combustion Method ◽  
Scintillation Counting ◽  
Irradiated Graphite ◽  
Thermal Column

Accelerator Mass Spectrometry and Full Combustion method followed by liquid scintillation counting were applied to measure the accumulated 14C in the thermal column of the decommissioned VVR-S reactor in NIPNE Bucharest.

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