Analytical study of seashell using laser-induced breakdown spectroscopy  

作　　者：Ying LI Yanhong GU Ying ZHANG Yuandong LI Yuan LU 李颖;谷艳红;张莹;李远东;卢渊(Optics and Optoelectronics Laboratory,Ocean University of China,Qingdao 266100,People's Republic of China)

机构地区：[1]Optics and Optoelectronics Laboratory,Ocean University of China,Qingdao 266100,People's Republic of China

出　　处：《Plasma Science and Technology》2017年第2期52-55,共4页等离子体科学和技术（英文版）

基　　金：financially supported by National Natural Science Foundation of China(No.41506113);Natural Science Foundation of Shandong Province(No.ZR2014DP010)

摘　　要：Seashell has been applied as an indicator for ocean research and element analysis of the seashell is used to track biological or environmental evolution. In this work, laser-induced breakdown spectroscopy （LIBS） was applied for elementary analysis of an ezo scallop-shell, and a graphite enrichment method was used as the assistance. It was found that LIBS signal intensity of Ca fluctuated less than 5%, in spite of the sampling positions, and Sr/Ca was related to the shell growth. A similar variation was also found when using a direct LIBS analysis on the shell surface, and it might be more practicable to track shell growth by investigating Sr/Ca ratio with Sr ionic line at 421.6 nm. The obtained results prove that calcium （Ca） is qualified as an internal reference for shell analysis, and LIBS is a potential analytical method for seashell study.Seashell has been applied as an indicator for ocean research and element analysis of the seashell is used to track biological or environmental evolution. In this work, laser-induced breakdown spectroscopy （LIBS） was applied for elementary analysis of an ezo scallop-shell, and a graphite enrichment method was used as the assistance. It was found that LIBS signal intensity of Ca fluctuated less than 5%, in spite of the sampling positions, and Sr/Ca was related to the shell growth. A similar variation was also found when using a direct LIBS analysis on the shell surface, and it might be more practicable to track shell growth by investigating Sr/Ca ratio with Sr ionic line at 421.6 nm. The obtained results prove that calcium （Ca） is qualified as an internal reference for shell analysis, and LIBS is a potential analytical method for seashell study.

关 键 词：seashell analysis LIBS graphite enriched process Sr/Ca shell growth 

分 类 号：Q95[生物学—动物学] O433[机械工程—光学工程]