@article{fdi:010061327,
  title = {{A}ccuracy of {B}e-9-data and its influence on {B}e-10 cosmogenic nuclide data},
  author = {{M}erchel, {S}. and {B}remser, {W}. and {B}ourles, {D}. {L}. and {C}zeslik, {U}. and {E}rzinger, {J}. and {K}ummer, {N}. {A}. and {L}eanni, {L}aetitia and {M}erkel, {B}. and {R}ecknagel, {S}. and {S}chaefer, {U}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} {B}e-9-solution has been chemically prepared from phenakite ({B}e2{S}i{O}4) mineral grains as commercial {B}e-9-solutions are too high in long-lived {B}e-10. {T}he solution is intended to be used as a carrier for radiochemical separation of {B}e-10 to be measured by accelerator mass spectrometry ({AMS}). {T}hus, accurate data of the {B}e-9-concentration of this solution is essential to guarantee for high-accuracy {B}e-10 data in the future. {A}fter devastating preliminary results (similar to 8 % standard deviation), eight laboratories finally produced twelve individual results by four different analytical methods. {A} certain lab and method bias might be identified by sophisticated statistical evaluation. {S}ome laboratories also (grossly) underestimate their uncertainties. {T}hus, the simple weighted mean of this round-robin exercise needed to be corrected by introducing additional allowances ({P}aule-{M}andel-approach). {T}he final result has been calculated to (2,246 +/- {A} 11) mu g {B}e-9/(g solution) with a reasonably low weighted standard deviation of 0.49 %. {T}he maximum deviation of a single lab value from the weighted mean is 2.4 % when removing one {G}rubbs outlier (11 % off from the mean) from the data set. {A}s {B}e-10-data, which is usually calculated from measured {B}e-10/{B}e-9 by {AMS} and stable {B}e-9, cannot be more accurate than the determined {B}e-9-concentration, it seems highly advisable to establish or improve quality assurance by having self-made carrier-solutions analysed at more than a single lab and regularly taking part in round-robin exercises.},
  keywords = {{C}osmogenic nuclide ; {ICP}-{MS} ; {ICP}-{OES} ; {AAS} ; {R}ound-robin ; {A}ccelerator mass spectrometry},
  booktitle = {},
  journal = {{J}ournal of {R}adioanalytical and {N}uclear {C}hemistry},
  volume = {298},
  numero = {3},
  pages = {1871--1878},
  ISSN = {0236-5731},
  year = {2013},
  DOI = {10.1007/s10967-013-2746-x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061327},
}