- P-ISSN 1225-0163
- E-ISSN 2288-8985
새로운 합성 시약 nocotinaldehyde-4-phenyl-3-thiosemicarbazone(NPS)을 이용하여 Hg(II)의 추출 흡광광도 정량법을 검토하여 미량 Hg(II)의 최적 정량조건을 확립하였다. Hg(II)-NPS 착물은 pH가 3.0~10까지 넓은 범위에서 선택성을 가진 안정된 착물을 형성하며, chloroform을 추출용매로 사용하여 365nm에서 측정한 몰흡광계수는 <TEX>$2.45{\times}10^4L\;mol^{-1}\;cm^{-1}$</TEX>이며, Hg(II)의 농도가 <TEX>$0.2{\sim}18{\mu}g\;mL^{-1}$</TEX>까지 Beer의 법칙을 만족하였다. 또한 본 분석법을 이용하여 두발(표준시료) 중의 수은을 분석하여 양호한 결과를 얻었다.
A selective extraction-spectrophotometric method for the determination of mercury(II) with nocotinaldehyde-4-phenyl-3-thiosemicarbazone(NPS) was described. The method is based on the formation of an insoluble mercury-NPS complex, which is extratable into chloroform from an aqueous solution at pH 3.5 by shaking for 3 min. The absorbance is measured at 365nm and the molar absorptivity is <TEX>$2.45{\times}10^4L\;mol^{-1}\;cm^{-1}$</TEX>. The complex system conforms to Beer's law for up to <TEX>$18{\mu}g\;mL^{-1}$</TEX> of mercury(II). The proposed method is simple and selective and has been satisfactorily applied to the determination of mercury in standard human hair sample.