Fluorescence characterization of metal ion—humic acid interactions in soils amended with composted municipal solid wastes

Plaza, César; Brunetti, Gennaro; Senesi, Nicola; Polo, Alfredo
December 2006
Analytical & Bioanalytical Chemistry;Dec2006, Vol. 386 Issue 7/8, p2133
Academic Journal
Fluorescence spectroscopy has been used to probe the structural properties and Cu(II), Zn(II), Cd(II), and Pb(II)-binding behavior of humic acid (HA)-like fractions isolated from a municipal solid waste compost (MSWC) and HAs from unamended and MSWC-amended soils. The main feature of the fluorescence spectra, in the form of emission-excitation matrix (EEM) plots, was a broad peak with the maximum centered at an excitation/emission wavelength pair that was much shorter (340/437 nm) for MSWC-HA than for unamended and MSWC-amended soil HAs (455/513 and 455/512 nm, respectively). Fluorescence intensity for MSWC-amended soil HA was less than that for unamended soil HA. These results were indicative of more aromatic ring polycondensation and humification of soil HAs, and of partial incorporation of simple and low-humified components of MSWC-HA into native soil HA, as a result of MSWC amendment. Titrations of HAs with Cu(II), Zn(II), Cd(II), and Pb(II) ions at pH 6 and ionic strength 0.1 mol L−1 resulted in a marked decrease of the fluorescence intensities of untreated HAs. By successfully fitting a single-site fluorescence-quenching model to titration data, the metal ion complexing capacities of each HA and the stability constants of metal ion-HA complexes were obtained. The binding capacities and stability constants of MSWC-HA were smaller than those of the unamended soil HA. Application of MSWC to soil slightly reduced the metal-ion-binding capacities and affinities of soil HAs.


Related Articles

  • Unavoidable reality. DASTUR, MAHAZAREEN // Down to Earth;7/16/2013, Vol. 22 Issue 5, p53 

    The article focuses on aspects related to proper waste management in India. Topics discussed include the role of waste and dumping treatment facilities for garbage disposal, the importance of recycling for the environment, and the use of radiofrequency identification tags for detection of...

  • Radioactive Waste Management.  // Chemical Business;Mar2014, Vol. 28 Issue 3, p7 

    The article discusses the management of the disposal of radioactive waste products and the environmental problems they pose to industrial countries. It discusses the dependence of the safety of a nuclear waste repository on the behavior of the surrounding ground water. It is inferred that the...

  • Synthesis of a Dehydroabietyl Derivative Bearing a 2-(2′-Hydroxyphenyl) Benzimidazole Unit and Its Selective Cu2+ Chemosensing. Ying-Chun Wang; Lu-Zhi Liu; Ying-Ming Pan; Heng-Shan Wang // Molecules;Jan2011, Vol. 16 Issue 1, p100 

    A dehydroabietyl derivative 2 bearing a 2-(2′-hydroxyphenyl)benzimidazole unit was synthesized and its sensing behaviors toward metal ions were investigated by UV-Vis and fluorescence spectroscopy methods. In THF solution, compound 2 exhibited excellent selectivity for Cu(II) over...

  • A novel fluorescent sensor for Fe3+ and Cr3+ based on a calix[4]arene bearing two coumarin units. Wang, He-wen; Feng, Ya-qing; Meng, Shu-xian // Journal of Chemical Research;Oct2012, Vol. 36 Issue 10, p587 

    A novel turn-on fluorescent sensor based on a calix[4]arene with two coumarin units as fluorophores and iminogroups as ionophores on the upper rim has been synthesised. Its recognition properties towards heavy and transition metal ions have been studied by UV-Vis and fluorescence spectrometry....

  • Spectral and luminescent properties of coumarins in nanoparticles from metal ion complexes. Mironov, L.; Sveshnikova, E.; Ermolaev, V. // Optics & Spectroscopy;Jul2013, Vol. 115 Issue 1, p53 

    We have studied the absorption spectra of complexes of trivalent ions Y, La, Lu, and Sc with p-phenylbenzoyltrifluoroacetone that were introduced into a solution of 90% HO + 10% iso-CHOH in the absence and presence of either 1,10-phenanthroline or coumarins 6, 7, or 30. We have shown that these...

  • Synthesis, Spectroscopic Properties of Bis-Boc-L-alanine Modified 1,8-Naphthyridine Ligand Induced by Cr3+. Gaozhang Gou; Bo Zhou; Ling Shi; Na Wu; Xianlan Chen; Wei Liu // Applied Mechanics & Materials;2014, Vol. 716-717, p163 

    One Bis-Boc-L-alanine-1,8-naphthyridine ligand containing amino acid by amido bond named 2,7-Bis-Boc-L-alanine-1,8-naphthyridine (L1) was synthesized and characterized. And there absorption and fluorescence spectra in methanol is presented. Then, the comprehensive study of spectroscopic...

  • Regions ally in war on waste Redd, Adrienne // World Wastes;Jun1993, Vol. 36 Issue 6, p110 

    No abstract available.

  • Regional systems benefit both wet and dry states Redd, Adrienne // World Wastes;Oct1993, Vol. 36 Issue 10, p53 

    No abstract available.

  • Contracting services: a question of needs Hutchinson, Richard J. // World Wastes;Oct1995, Vol. 38 Issue 10, p50 

    No abstract available.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics