Details

Autor(en) / Beteiligte

• Alwan, Alwan M.
• Wali, Layla A.
• Hasan, Khulood K.

Titel

A new route for developing highly efficient nano biochemical sensors for detecting ultra-low concentrations of tetracycline antibiotic residue in water

Ist Teil von

• Gold bulletin (World Gold Council), 2020-03, Vol.53 (1), p.39-46

Ort / Verlag

Cham: Springer International Publishing

Erscheinungsjahr

2020

Link zum Volltext

Quelle

SpringerLink Journals - AutoHoldings

Beschreibungen/Notizen

• This study reports a new detection process for sensing ultra-low concentrations of tetracycline (TC), using a hot spot surface-enhanced Raman scattering (SERS) sensor. A gold nanoparticles/ macroporous silicon (Au NPs/macroPSi) hot spot SERS sensor was fabricated using a very simple and low cost method. The SERS signal was investigated using Au NPs/macroPSi hot spot SERS sensor for efficient detection of TC antibiotics at lower concentrations of (10 −3 –10 −9 ) mol/L. The sensor showed an excellent performance for TC detection with an enhancement factor (EF) of 2 × 10 8 , ultra-low detection limit of 10 −9  mol/L, and very high reproducibility with a relative standard deviation of 2%. The effect of the pH value on the behavior of the SERS spectra for TC antibiotic was evaluated, and it was found that pH values of 5 and 6 were the best for the detection process of TC antibiotic.