Studies on Electrochemical Behavior of Some Light Lanthanide Ions in Nonaqueous Solution, Flow Injection Determination and Photochemical Characterization of Heavy Metal Ion Chelate Eight Coordinated Complexes. (Part 2)

비수용액에서 가벼운 란탄족 이온의 전기화학적 거동, 흐름 주입법에 의한 정량 및 중금속 이온의 킬레이트형 8-배위 착물의 광화학적 특성 연구 (제 2 보) : 계면활성제 존재하에서 Chromeazurol S를 사용하여 몇 가지 란탄이온의 흐름주입법에 의한 정량

  • 강삼우 (한남대학교 이공대학 화학과) ;
  • 장주환 (한남대학교 이공대학 화학과) ;
  • 김일광 (원광대학교 자연과학대학 화학과) ;
  • 한홍석 (한남대학교 이과대학 화학과) ;
  • 조광희 (한남대학교 이과대학 화학과)
  • Published : 19940100

Abstract

Spectrophotometric determination of some light lanthanide ions by flow injection method is described. Chromeazurol S forms water soluble complex with lanthanide ions in the presence of DTAB. The absorption maximum of the complexes are from 650 nm to 655 nm and the molar absorptivities were ca. $1.8{\times}10^5\;L mol^{-1}cm^{-1}$ on Tris buffer (pH 10.5). The calibration curves for Nd(III), Eu(III) and Sm(III) obtained by FIA are over the range of 0.1 to 0.6 ppm and the correlation coefficient were ca. 0.9993. The detection limits (S/N) were from 10 ppb for Nd(III) and Eu(III) to 20 ppb for Sm(III). The relative standard deviations was ${\pm}$.2% for 0.4 ppm sample. The samples throughput was ca. $50\;cm^{-1}$.

Keywords

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