کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9460424 | 1620781 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bioaerosol characterization by surface-enhanced Raman spectroscopy (SERS)
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
It is demonstrated that bioaerosols can be characterized by their surface-enhanced Raman spectra. Preliminary studies showed that Raman spectra of aqueous suspensions of Escherichia coli, Pseudomonas aeruginosa, and Salmonella typhimurium can be obtained by mixing them with a nanocolloidal suspension of silver. Adsorption of the microorganisms on the silver quenches fluorescence and yields greatly enhanced spectra. To assist in the interpretation of the spectra we also obtained SERS spectra of N-acetyl glucosamine and the amino acids L-lysine, D-alanine and D-glutamic acid. After baseline studies identified the spectral region of interest and the concentrations of microorganisms and colloid particles needed to maximize the Raman signal, aerosolized microorganisms were impacted and transferred to a colloidal suspension of silver nanoparticles to obtain reproducible Raman spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Aerosol Science - Volume 36, Issues 5â6, MayâJune 2005, Pages 651-664
Journal: Journal of Aerosol Science - Volume 36, Issues 5â6, MayâJune 2005, Pages 651-664
نویسندگان
A. Sengupta, M.L. Laucks, N. Dildine, E. Drapala, E.J. Davis,