Applied Chemistry (응용화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Determination of L-Alanine Using Silver Nanoparticles Chemiluminescence System

은 나노입자를 이용한 화학발광법에 의한 L-alanine의 정량

  • Jo, Hae Jin (Department of Chemistry, Kyungpook National University) ;
  • Jang, Taek Gyun (Department of Chemistry, Kyungpook National University) ;
  • Choi, Jong Ha (Department of Applied Chemistry, Andong National University) ;
  • Suh, Jung Kee (Health Metrology Group, Korea Research Institute of Standards and Science) ;
  • Jeon, Chi Wan (Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Young Ho (Research Institute of Advanced Energy Technology, Kyungpook National University) ;
  • Lee, Sang Hak (Department of Chemistry, Kyungpook National University)
  • 조해진 (경북대학교 화학과) ;
  • 장택균 (경북대학교 화학과) ;
  • 최종하 (안동대학교 응용화학과) ;
  • 서정기 (한국표준과학연구원 삶의질측정표준본부) ;
  • 전치완 (한국지질자원연구원) ;
  • 김영호 (경북대학교 차세대에너지기술연구소) ;
  • 이상학 (경북대학교 화학과)
  • Published : 2011.03.31

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Abstract

A chemiluminescent method with silver nanoparticles for determination of L-alanine has been presented. The chemilumiscence intensity was further enhanced by silver nanoparticles in the luminol system by its catalytic role. The silver nanoparticles enhanced chemiluminescent method is applicable for the determination of an amino acid such as alanine. When alanine was introduced to the luminol system with silver nanoparticles, chemiluminescence intensity was reduced with the concentration of the added alanine. The effects of pH, concentrations of luminol, hydrogen peroxide and silver nanoparticles on the chemiluminescence intensity were investigated. The calibration curve for L-alanine was linear over the range from 6.60×10-8 M to 4.00×10-7 M, coefficient of correlation was 0.996 and detection limit was 3.5×10-9 M under the optimal conditions of 4.0×10-3 M, 4.0×10-2 M, 4.0×10-4 M, 12.8 for the concentration of luminol, H2O2, silver nanoparticles and pH, respectively.

Keywords

Acknowledgement

This work was supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0093819).