@article{oai:niigata-u.repo.nii.ac.jp:00027992, author = {宮崎, 隆 and 井川, 寿之 and 渡部, 直喜}, journal = {新潟大学積雪地域災害研究センター研究年報, 新潟大学積雪地域災害研究センター研究年報}, month = {Dec}, note = {Measurements of carbon and oxygen isotope ratios for carbonate samples were started in earnest on a Micromass PRISM mass spectrometer in the Research Institute for Hazards in Snowy Areas, Niigata University. Carbonate samples were treated with 100% phosphoric acid at 190℃. The automatic front treatment device (MultiPrep) reduced the size of samples and cased the extraction and refining of CO_2 from carbonate samples. The δ^<13>C and δ^<18>O values of new laboratory standards are δ^<13>C_=4.76‰ andδ^<18>O_=-6.13‰ (FLD) and δ^<13>C_=-32.19‰ and δ^<18>O_=-22.44‰ (NCC), respectively. The new laboratory standards are effective in the correction of most unknown samples.}, pages = {27--33}, title = {新潟大学積雪地域災害研究センターにおける炭酸塩試料の炭素・酸素同位体比測定}, volume = {23}, year = {2001} }