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1-(2,6-dichloro-4-nitrophenyl)-3-(4-nitrophenyl)-triazenephotometric determination of trace zinc in the zinc water solution

Xin Zhang

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Abstract

Studied the trace zinc in zinc water solution is determined by the colour reaction of 1(2,6dichloro4nitrophenyl)3(4nitrophenyl)Triazene (DCNPNPT) with zinc(Ⅱ) directly and rapidly Results show that the yellow complex(1∶3) appears at pH=95～105 buffer solution of Na2B4O7NaOH in the presence of Triton X15, the maximum sbsorption wavelength is at 445nm and the maximum negative absorption is wavelength at 535nm The molar absorptivity is 112×105L/(mol·cm) by using dualwavelength spectrophotometry, which the reference and the determined wave are 535nm and 445nm respectively This method has used to determine Zinc in the Zinc Water solution with Satisfactory results

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Studied the trace zinc in zinc water solution is determined by the colour reaction of 1(2,6dichloro4nitrophenyl)3(4nitrophenyl)Triazene (DCNPNPT) with zinc(Ⅱ) directly and rapidly Results show that the yellow complex(1∶3) appears at pH=95～105 buffer solution of Na2B4O7NaOH in the presence of Triton X15, the maximum sbsorption wavelength is at 445nm and the maximum negative absorption is wavelength at 535nm The molar absorptivity is 112×105L/(mol·cm) by using dualwavelength spectrophotometry, which the reference and the determined wave are 535nm and 445nm respectively This method has used to determine Zinc in the Zinc Water solution with Satisfactory results

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Available abstract

Studied the trace zinc in zinc water solution is determined by the colour reaction of 1(2,6dichloro4nitrophenyl)3(4nitrophenyl)Triazene (DCNPNPT) with zinc(Ⅱ) directly and rapidly Results show that the yellow complex(1∶3) appears at pH=95～105 buffer solution of Na2B4O7NaOH in the presence of Triton X15, the maximum sbsorption wavelength is at 445nm and the maximum negative absorption is wavelength at 535nm The molar absorptivity is 112×105L/(mol·cm) by using dualwavelength spectrophotometry, which the reference and the determined wave are 535nm and 445nm respectively This method has used to determine Zinc in the Zinc Water solution with Satisfactory results

Key concepts: Zinc, Molar absorptivity, Chemistry, Spectrophotometry, Absorption (acoustics), Buffer solution, Triazene, Inorganic chemistry

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