1-（4-Acetylaminophenyl）-α-bromo-1-propanone was synthesized from 1-（4-acetylaminophenyl） propanone through α-hydrogen brominating using Br2 in ethanol as bromination agent,and the yield was 70.4%.The melting poi...1-（4-Acetylaminophenyl）-α-bromo-1-propanone was synthesized from 1-（4-acetylaminophenyl） propanone through α-hydrogen brominating using Br2 in ethanol as bromination agent,and the yield was 70.4%.The melting point of the target compound was tested and the structure was confirrmed by FT-IR and MS.The route with little pollution and less loss of solvent is practically valuable.展开更多
In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution...In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution of Na2B4O7NaOH.The molar absorptivity is 256×105L·mol-1·cm-1.Beer’s law is obeyed in the concentration range of 0～12μg/25mL for Mercury(Ⅱ).The results are in agreement with those determined by the conventional method.This new method was used to determine trace mercury in wastewater.展开更多
文摘1-（4-Acetylaminophenyl）-α-bromo-1-propanone was synthesized from 1-（4-acetylaminophenyl） propanone through α-hydrogen brominating using Br2 in ethanol as bromination agent,and the yield was 70.4%.The melting point of the target compound was tested and the structure was confirrmed by FT-IR and MS.The route with little pollution and less loss of solvent is practically valuable.
文摘In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution of Na2B4O7NaOH.The molar absorptivity is 256×105L·mol-1·cm-1.Beer’s law is obeyed in the concentration range of 0～12μg/25mL for Mercury(Ⅱ).The results are in agreement with those determined by the conventional method.This new method was used to determine trace mercury in wastewater.
