Determination of mercury (II) by spectrophotometric method based on self assembly of gold nanoparticles

محورهای موضوعی : Journal of the Iranian Chemical Research

Yan Du ¹ (College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R.. China)
Jing Yan ² (College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R.. China)
Mei Ni ³ (College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R.. China)
Bao Du ⁴ (College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R.. China)

تاریخ دریافت : 1389/11/02 تاریخ پذیرش : 1389/12/19 تاریخ انتشار : 1390/01/10

کلید واژه: Spectrophotometer, Gold nanoparticles, Mercury (II), Glutathione,

چکیده مقاله :

Due to the binding of the –COO- group with the mercury (II), gold nanoparticlesfunctionalized with glutathione can self-assemble to form a supermolecular network in the HAc-NaAc buffer solution. The aggregation of functionalized gold nanoparticles and mercury (II)caused the shift of maximum absorption peak of the UV-Vis spectrum from 520 nm to 609 nm.Based on this principle, a simple spectrophotometric method for determination of mercury (II)was preliminarily established. The detection limit of the developed method for determination ofmercury (II) was about 8.5×10-8 mol L-1.

منابع و مأخذ:

[1] G.P. Brandao, R.C. de Campos, A.S. Luna, Spectrochim Acta B 60 (2005) 625-631.
[2] S. Bhattacharyya, P. Chaudhuri, S. Dutta, S.C. Santra, Bull. Environ. Contam. Tox. 84 (2010) 618-
622.
[3] J.L. Mann, S.E. Long, W.R. Kelly, J. Anal. Atom. Spectrom. 18 (2003) 1293-1296.
[4] A.G. Lista, M.E. Palomeque, B.S.F. Band, Talanta 50 (1999) 881-885.
[5] A.J. Percy, M. Korbas, G.N. George, J. Gailer, J. Chromatogr. A 1156 (2007) 331-339.
[6] L. Bennun, J. Gomez, Spectrochim Acta B 52 (1997) 1195-1200.
[7] C. Radulescu, C. Stihi, G. Busuioc, A.I. Gheboianu, I.V. Popescu, Bull. Environ. Contam. Tox. 84
(2010) 641-646.
[8] P. Ugo, L.M. Moretto, P. Bertoncello, J. Wang, Electroanal. 10 (1998) 1017-1021.
[9] P.R. Devi, T. Gangaiah, G.R.K. Naidu, Anal. Chim. Acta 249 (1991) 533-537.
[10] R. Elghanian, J.J. Storhoff, R.C. Mucic, R.L. Letsinger, C.A. Mirkin, Science 277 (1997) 1078-1081.
[11] P.K. Sudeep, S.T.S. Joseph, K.G. Thomas, J. Am. Chem. Soc. 127 (2005) 6516-6517.
[12] Z.P. Li, X.R. Duan, C.H. Liu, B.A. Du, Anal. Biochem. 351 (2006) 18-25.
[13] M. Rex, F.E. Hernandez, A.D. Campiglia, Anal. Chem. 78 (2006) 445-451.
[14] K.C. Grabar, R.G. Freeman, M.B. Hommer, M.J. Natan, Anal. Chem. 67 (1995) 735-743.