119 resultados para CU2
Resumo:
Resumo:
A novel water-soluble fluorescent nanosphere as fluorosensor was prepared by emulsifier-free emulsion copolymerization of styrene with naphthalimide derivative (A). The fluorosensor was high sensitive for detection of Cu2+. Comparied with other fluorosensors based on organic fluorophore, it has two advantages. First, there is no pollution to environment in the use of it. Second, it can be used repeatedly.
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NP>>3 g/L35NP Cu2+Pb2+Cd2+pH5.0Na+K+Ca2+Mg2+Cl-NO3-SO42-C2O42-EDTALangmuirFreundlichCu2+Pb2+Cd2+25Cu2+Pb2+Cd2+1.61 mmol/g0.96 mmol/g0.98 mmol/gCu2+Pb2+Cd2+pseudo-30minEDTACu2+Pb2+Cd2+ Cr6+Cr6+Cr6+pH23pHCr6+pH5.0CrCr6+Cr3+Cr3+Cr6+Cr6+ Cu2+Pb2+Cd2+Cr6+LangmuirFreundlich25pH5.0LangmuirCu2+Pb2+Cd2+4.20 mmol/g3.13 mmol/g2.97 mmol/gCr6+
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,Cu2 + PCu2 + ,,Cu2 + P10 ;1. 0 mgPL Cu2 + , 5. 010. 020. 0 mgPL Cu2 + ,40. 0 mgPL Cu2 + Cu2 +
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(HFO)Cu2+.:,PZC8.280.02;Cu2+HFO,HenryLangmuir;,Cu2+(Y=aXb).Cu2+Cu2+Cu2+.
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Two new azo dyes of alpha-isoxazolylazo-beta-dilcetones and their Ni(II) and Cu(II) complexes with blue-violet light wavelength were synthesized using a coupling component, different diazo components and metal (II) ions (Ni2+ and Cu2+). Based on the elemental analysis, MS spectra and FT-IR spectral analyses, azo dyes were unequivocally shown to exist as hydrazoketo and azoenol forms which were respectively obtained from the solution forms and from the solid forms. The action of sodium methoxide (NaOMe) on azo dyes in solutions converts hydrazoketo form into azoenol form, so azo dyes are coordinated with metal (II) ions as co-ligands in the azoenol forms. The solubility of all the compounds in common organic solvents such as 2,2,3,3-tetrafluoro-1-propanol (TFP) or chloroform (CHCl3) and absorption properties of spin-coating thin films were measured. The difference of absorption maxima from the complexes to their ligands was discussed. In addition, the TG analysis of the complexes was also determined, and their thermal stability was evaluated. It is found that these new metal (II) complexes had potential application for high-density digital versatile disc-recordable (HD-DVD-R) system due to their good solubility in organic solvents, reasonable and controllable absorption spectra in blue-violet light region and high thermal stability. (c) 2004 Elsevier B.V. All rights reserved.
Resumo:
,CuOCuClCu2+,,Cu2+P2O5-ZnO-Na2O,CuOCuClP2O5-ZnO-Na2OCu2+,Cu2+6%,1053 nm59.46 cm-1,
Resumo:
Wolffia ;;;;;;W. globosa mat K RAPD W. globosa ;Monpterus albus Zuiew GSTs maGST 1. Wolffia Wolffia Wolffia Wolffia subgroup //W. globosaW. neglecta mat K Wolffia 2. Wolffia RAPD ;MVSP, Popgene Ntsys Wolffia 3. W. globosa W. globosa W. globosa ;4.19 ;S;W. globosa pH ;IAAGA6-BA EDDHA-Fe EDTA W. globosa ;W. globosa 4. W. globosa W. globosa ;; 5. Cr3+CDNB WolffiaSpirodela Lemna Wolffia Spirodela Lemna Cr3+Wolffia 800GB( 80mg/L)Spirodela Lemna 10mg/L;20mg/L;W. globosa W. globosa GSTs Cu2+Cd2+CDNB NBD-Cl 6. Monpterus albus Zuiew GSTs GSTs BiomarkerM. albus GSTs GSH 207 maGST SDS-PAGE MALDI-TOF/MS MaGST 52kDa26 kDamaGST CDNB 13.07 0.37 ;NBD-Cl 5.54 ;ECA4-NPA GSH CDNB Km Vmax 0.32 mM 16.19 ;CDNB GSH Km Vmax 0.44 mM 28.83 maGST pH pH7.0-7.5 pH6.5 pH8.5 65%72%;45305580%60
