@article{fdi:010068560,
  title = {{I}nterlaboratory study for coral {S}r/{C}a and other element/{C}a ratio measurements},
  author = {{H}athorne, {E}.{C}. and {G}agnon, {A}. and {F}elis, {T}. and {A}dkins, {J}. and {A}sami, {R}. and {B}oer, {W}. and {C}aillon, {N}. and {C}ase, {D}. and {C}obb, {K}.{M}. and {D}ouville, {E}. and {M}enocal, {P}. de and {E}isenhauer, {A}. and {G}arbe-{S}chonberg, {D}. and {G}eibert, {W}. and {G}oldstein, {S}. and {H}ughen, {K}. and {I}noue, {M}. and {K}awahata, {H}. and {K}olling, {M}. and {L}e {C}ornec, {F}lorence and {L}insley, {B}.{K}. and {M}c{G}regor, {H}.{V}. and {M}ontagna, {P}. and {N}urhati, {I}.{S}. and {Q}uinn, {T}.{M}. and {R}addatz, {J}. and {R}ebaubier, {H}. and {R}obinson, {L}.{F}. and {S}adekov, {A}. and {S}herrell, {R}. and {S}inclair, {D}. and {T}udhope, {A}.{W}. and {W}ei, {G}.{J}. and {W}ong, {H}.{R}. and {W}u, {H}.{C}. and {Y}ou, {C}.{F}.},
  editor = {},
  language = {{FRE}},
  abstract = {{T}he {S}r/{C}a ratio of coral aragonite is used to reconstruct past sea surface temperature ({SST}). {T}wenty-one laboratories took part in an interlaboratory study of coral {S}r/{C}a measurements. {R}esults show interlaboratory bias can be significant, and in the extreme case could result in a range in {SST} estimates of 7 degrees {C}. {H}owever, most of the data fall within a narrower range and the {P}orites coral reference material {JC}p-1 is now characterized well enough to have a certified {S}r/{C}a value of 8.838 mmol/mol with an expanded uncertainty of 0.089 mmol/mol following {I}nternational {A}ssociation of {G}eoanalysts ({IAG}) guidelines. {T}his uncertainty, at the 95% confidence level, equates to 1.5 degrees {C} for {SST} estimates using {P}orites, so is approaching fitness for purpose. {T}he comparable median within laboratory error is <0.5 degrees {C}. {T}his difference in uncertainties illustrates the interlaboratory bias component that should be reduced through the use of reference materials like the {JC}p-1. {T}here are many potential sources contributing to biases in comparative methods but traces of {S}r in {C}a standards and uncertainties in reference solution composition can account for half of the combined uncertainty. {C}onsensus values that fulfil the requirements to be certified values were also obtained for {M}g/{C}a in {JC}p-1 and for {S}r/{C}a and {M}g/{C}a ratios in the {JC}t-1 giant clam reference material. {R}eference values with variable fitness for purpose have also been obtained for {L}i/{C}a, {B}/{C}a, {B}a/{C}a, and {U}/{C}a in both reference materials. {I}n future, studies reporting coral element/{C}a data should also report the average value obtained for a reference material such as the {JC}p-1.},
  keywords = {{JAPON} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{G}eochemistry, {G}eophysics, {G}eosystems},
  volume = {14},
  numero = {9},
  pages = {3730--3750},
  ISSN = {1525-2027},
  year = {2013},
  DOI = {10.1002/ggge.20230},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068560},
}