Inductively coupled plasma atomic emission spectrometry: an efficient tool for precise determination of Mg/Ca and Sr/Ca ratios in biocarbonates.
A method is developed to precisely determine Mg/Ca and Sr/Ca ratios in biocarbonates by inductively coupled plasma atomic emission spectrometry (ICP-AES). This method precision (RSD%) is 0.52% for Mg/Ca and 0.28% for Sr/Ca, respectively. The precision suggests that ICP-AES is satisfactory for supplying good quality Mg/Ca and Sr/Ca data of biocarbonates for paleo-reconstruction. This ICP-AES technique was applied to 51 continuous coral subsamples, and the results show annually periodical variations in coral Mg/Ca and Sr/Ca ratios, which are consistent with previous findings.
Sun
Yali
Y
Department of Earth Sciences, the University of Hong Kong, Pokfulam Road, Hong Kong, China. ysun@graduate.hku.hk
Sun
Min
M
D000818:Animals; D037421:Anthozoa / Q000737:chemistry*; D002254:Carbonates / Q000032:analysis* / Q000737:chemistry; D005740:Gases; D006358:Hot Temperature; D008274:Magnesium / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013054:Spectrophotometry, Atomic / Q000379:methods*; D013324:Strontium / Q000032:analysis* / Q000737:chemistry
D002254:Carbonates; D005740:Gases; D008274:Magnesium; D013324:Strontium