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해산 이매패류 패각의 CaCO3 결정 구조에 대한 X-ray 회절 분석

Analysis of CaCO3 structure of marine bivalves using X-ray diffraction

  • 남기웅 (군산대학교 해양과학대학 수산생명의학과) ;
  • 이승우 (한국지질자원연구원) ;
  • 송재희 (국립수산과학원 갯벌연구소) ;
  • 정희도 (국립수산과학원 갯벌연구소) ;
  • 박경일 (군산대학교 해양과학대학 수산생명의학과)
  • Nam, Ki-Woong (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University) ;
  • Lee, Seng-Woo (Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Song, Jae-Hee (Tidal Flat Research Institute, National Fisheries Research and Development Institute (NFRDI)) ;
  • Jeung, Hee-Do (Tidal Flat Research Institute, National Fisheries Research and Development Institute (NFRDI)) ;
  • Park, Kyung-Il (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University)
  • 투고 : 2015.11.13
  • 심사 : 2015.12.30
  • 발행 : 2015.12.30

초록

본 연구는 해산 이매패 8종에 대해 패각 결정 (結晶)에 대한 분광학적 특성을 XRD 기법을 이용하여 조사하고 종간 근연관계에 대해 기존의 조사와 비교하였다. XRD분석을 수행한 결과, 바지락, 백합, 꼬막, 새조개의 패각은 $CaCO_3$의 orthorhombic 결정형인 aragonite였으며, 가리비와 굴의 패각은 trigonal-rhombohedral 결정형인 calcite였다. 담치와 키조개의 경우 aragonite와 calcite가 혼합된 결정으로 분석되었다. XRD를 이용하여 측정된 패각의 x-선 회절정보는 패류별 특이성을 나타내었으며, 이러한 특성을 이용한 과 (Family) 간 근연관계를 조사한 결과 현재 알려진 분류체계를 잘 대변하고 있었다. 결론적으로 패각 결정 (結晶)에 대한 분광학적 특성은 조사된 패류의 과 (Family) 수준에서 특이성을 잘 나타내며, 향후 종수준의 연구를 통한 종 동정을 위한 추가 연구가 필요함을 시사하였다. 또한 이러한 기술은 소량의 패각을 이용하므로 미확인 소량 절편의 패류 종 파악에 유용하게 이용될 수 있을 것으로 기대된다.

This study investigated spectroscopic characteristics of shell crystals of eight marine bivalve species using X-ray diffraction (XRD) analysis; moreover, the Family level relatedness of shellfish was investigated. In XRD analysis, the shells of Ruditapes philippinarum, Meretrix lusoria, Anadara granosa, and Fulvia mutica were found to have orthorhombic aragonite $CaCO_3$ crystals, while shells of Patinopecten yessoensis and Crassostrea gigas had trigonal-rhombohedral calcite crystals. The shells of Mytilus coruscus and Atrina pectinata were determined to have a mixture of aragonite and calcite crystals. XRD information revealed the Family level-specific characteristics of shellfish; the results agreed with the current taxonomic system. In conclusion, spectroscopic characteristics of shell crystals indicated Family-level characteristics of shellfish and suggested a more intense species-level investigation; this technology may be useful in identifying shellfish species using small quantities of shells.

키워드

참고문헌

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