Three whole-wood isotopic reference materials, USGS54, USGS55, and USGS56, for δ2H, δ18O, δ13C, and δ15N measurements

Three wood isotopic reference materials for δ2H and δ13C measurements of plant methoxy groups

“…Also applying the new set of methoxy reference materials we additionally analyzed the δ 2 H OCH3 and δ 13 C OCH3 values as well as the methoxy contents of three wood standards (USGS54-56) which were recently introduced as reference materials for δ 2 H, δ 18 O, δ 13 C, and δ 15 N bulk measurements (Qi et al, 2016a).…”

“…South African red ivorywood -177.6 ± 2.8 n = 15 -27.97 ± 0.32 n = 15 4.20 ± 0.06 n = 10 a) for more details and δ 2 H, δ 18 O, δ 13 C, and δ 15 N bulk values refer to (Qi et al, 2016a) b) analyzed by GC-FID according to Li et al, 2012…”

Re‐evaluation of the hydrogen stable isotopic composition of keratin calibration standards for wildlife and forensic science applications

“…Where no matrix equivalent organic calibration standards exist with respect to exchangeability properties, the development of matrix-equivalent calibration standards by vapor equilibration with two different waters will be required, as was done recently for whole-wood. [33] This is a key issue for the stable isotope community at large, to embark on long-term efforts to produce and calibrate a wide range of relevant complex organic H reference materials (e.g. Schimmelmann et al [20] ).…”

Geostandards and Geoanalytical Research Bibliographic Review 2016

“…In the field of environmental and palaeoclimate research, the whole‐wood materials USGS54, ‐55 and ‐56 have been characterised as new RMs for stable isotopes by Qi et al . (). Byers et al .…”

“…Vogl et al (2016) introduced for the first time a series of three new absolute isotope RMs for magnesium. In the field of environmental and palaeoclimate research, the whole-wood materials USGS54, -55 and -56 have been characterised as new RMs for stable isotopes by Qi et al (2016). Byers et al (2016) supply values for up to forty-nine elements in soil RMs, many of which were not characterised by the producer (NIST) making this paper a very useful addition to the existing certificates.…”