For deep sea corals, a combination of radiocarbon dating and uranium-thorium dating can be used. The carbon-14 date represents the age of the coral and the water, whereas the uranium-thorium date reflects the coral itself. This can provide information on past deep sea circulation rates.
耳石の放射性炭素年代測定では、個々の魚の絶対年代や輪紋形成を確認することができます。多くの年代検証技術がある中で、放射性炭素年代測定のみが、種々の魚、特に長期間生きた魚の絶対年齢を調べることが可能です。耳石標識として核実験起源の放射性炭素を使用することが、寿命が長い種の年代確認のための最も正確で妥当な方法の一つとされています。※
Beta Analyticでは、試験所としての付加価値を高める継続的な取り組みの一環として、δ15Nおよびδ13C測定に加えて、火葬されていない骨から抽出したコラーゲンのC:N（C/N比）、％C（炭素含有率）、％N（窒素含有率）の測定を行っております。
Choosing a radiocarbon dating laboratory is not always easy; there are many factors to consider and often budgetary constraints to negotiate. An important factor in decision-making is how quickly the results are reported, particularly if there are deadlines to meet. Even when there is no impending deadline, a fast turnaround time can be important and lead to cost savings in the long run.
As part of the continuous efforts to enhance the laboratory’s value-added services, Beta Analytic now provides C:N, %C and %N measurements on collagen extracted from non-cremated bones in addition to δ15N and δ13C stable isotope analysis at no additional cost for samples sent for radiocarbon dating.
Beta Analytic is expanding its services for groundwater and, for a limited time, is including free additional measurements when clients submit samples for radiocarbon dating. The laboratory is including isotope ratios for deuterium (dD) and oxygen (d18O) at no additional cost for all water samples submitted for accelerator mass spectrometry (AMS) dating until August 2016.
In an effort to further support its clients’ research, Beta Analytic will provide free d15N measurements on non-cremated bones and d18O on carbonates submitted for radiocarbon dating. The ISO 17025-accredited lab has recently removed its micro-sample analysis fees and cancellation fees for samples that are too small for standard AMS dating.
Beta Analytic, a professional ISO/IEC 17025:2017-accredited radiocarbon dating laboratory, is removing cancellation and partial analysis fees for samples that are too small or do not provide adequate carbon for accelerator mass spectrometry (AMS) dating.
As part of its commitment to provide high-quality results to its clients, ISO/IEC 17025:2017-accredited Beta Analytic does not accept pharmaceutical samples with “tracer Carbon-14” or any other material containing artificial Carbon-14 to eliminate the risk of cross-contamination.
To better serve clients in South Korea, ISO/IEC 17025:2017-accredited Beta Analytic has opened a sample forwarding office in Seoul. The initiative is part of the company’s commitment to provide archaelogists, geoscientists, forensic experts, and other researchers in Asia with high-quality radiocarbon dating services. All samples submitted to the forwarding facilities are sent to the Miami […]
