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- W2357505484 abstract "In this paper the synthesis of the new reagent 1-(4-nitrophenyl)-3-(3-nitro-5-chloro-pyridyl)-triazene(NPNCPDT) and its chromatogenic reaction with zinc have been studied.In the presence of surface active agent Triton X-100 and in the medium of Na_2B_4O_7-NaOH buffer solution(pH=10.5),Zn(Ⅱ) reacts with the reagent to form a yellow complex with the molar ratio of 1∶2.The positive and negative maximum absorptions of the complex are at 450 nm and 540 nm,respectively.The molar apparent absorptivity is 2.50×10~5 L·mol~(-1)·cm~(-1) using dual-wavelength spectrophotometric measurement with the reference wavelength at 450 nm and measurement wavelength at 540 nm.Beer′s law is obeyed in the range of 0~480 μg/L for Zn(Ⅱ).The method has been(applied) to the direct determination of zinc in human hair samples with precision of less than 2.5%RSD(n=6)." @default.
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- W2357505484 date "2006-01-01" @default.
- W2357505484 modified "2023-09-28" @default.
- W2357505484 title "Synthesis of 1-(4-Nitrophenyl)-3-(3-Nitro-5-Chloro-Pyridyl)-Triazene and Its Chromatogenic Reaction with Zinc(II)" @default.
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