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《Trace Elements Science》 2001-04
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Synthesis of 1-(4-nitrophenyl)-3-(5-nitro-2-pyridyl)-triazene and Its Color Reaction with Mercury

YANG Ming-hua *,ZHENG Yun-fa,ZHAO Gui-dan (Department of Chemistry,Lishui Teachers College,Lishui 323000,China)  
A new triazene reagent 1-(4-nitrophenyl)-3-(5-nitro-2-pyridyl)-triazene (NPNPDT) has been synthesized and the color reaction of NPNPDT with mercury(Ⅱ) has been studied.In the presence of Triton X-100,orange-yellow complex(1∶2) appears at pH 11 2 buffer solution of Na 2B 4O 7-NaOH.The molar absorptivity is 2 1×10 5 L·mol 1 ·cm 1 .Beer's law is obeyed in the range of 0~280 μg/L for mercury. The trace mercury was determined in human hair and urine by the proposed method with satisfactory results.
【CateGory Index】: O657.32
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