Double frequency ultrasound at oils and fats sample preparation for detection of lead and cadmium
DOI:
https://doi.org/10.26565/2220-637X-2014-24-15Keywords:
double frequency ultrasound, lead, cadmium, oil, metrology characteristicsAbstract
Application of double frequency ultrasound at oils and fats sample preparation for detection of lead and cadmium was examined. The irradiation with a combination of 1.0-2.5 W/cm2 20-45 kHz and 0.5-0.75 W/cm2 1.0‑2.5 MHz ultrasound during 2-3 minutes intensifies acid mineralization of samples and allows to enhance the extraction of lead and cadmium, to increase the ratio of organic to water phases and to improve reproducibility of analysis compared to its single-frequency versions.
References
Himicheskiy sostav pisch'evy'h produktov: spravochny'e tablicy' soderjaniya aminokislot, jirny'h kislot, vitaminov, makro- i mikroe`lementov, organicheskih kislot i uglevodov / [Pod red. M.F. Netesina i I.M. Skurihina] M.: Pisch'. prom-st', 1979. – 247 s.
Skurykhyn Y.M. Metodi analyza pyshchevikh produktov. Problemi analytycheskoi khymyy. T. 8. / Y.M. Skurykhyn. –M.: Nauka, 1988. – 132 s.
SVCH-izluchenie kak faktor intensifikacii probopodgotovki. Analiz ob`ektov s organicheskoy matricey / I.V. Kubrakova, T.F. Kudinova, E.B. Stavnivenko, N.M. Kuz'min // Jurn. analit. himii.- 1997.-T. 52, № 6.-S. 587-593.
Havezov I., Calev D. Atomno-absorbcionny'y analiz. L.:Himiya, 1983. – 144 s.
Sy'r'e i produkty' pisch'evy'e. Atomno-absorbcionny'y metod opredeleniya toksichny'h e`lementov (GOST 30178-96) [Prinyat 1996-10-04]. - M.: 2010. - 11 s. (Mejgosudarstvenny'y standart)
Chmilenko F.A. Atomno-absorbcionnoe opredelenie toksichny'h e`lementov v jirah i maslah / F.A. CHmilenko, L.V. Baklanova // Ukr. him. jurn.-1998.-T. 64, № 2.- S.134-140.
Anali'tichna hi'mi'ya kuhonnoi` soli' ta rozsoli'v / [Baklanov O.M., Avdeenko A.P., Chmilenko F.O., Baklanova L.V.] - Kramators'k: vid-vo DDMA, 2011. - 283 s.
Margulis M.A. Zvukohimicheskie reakcii i sonolyuminiscenciya / Margulis M.A. M.: Himiya, 1986. – 288 s.
Ul'trazvuk. Malen'kaya e`nciklopediya / Gl.red. I.P. Golyamina - M.: Sov. e`ncikl., 1979.- 400 s.
Alemasova A.S. Vy'sokotemperaturny'e processy' prevrasch'eniya kompleksoobrazovateley i kompleksov metallov v atomno-absorbcionnom analize.- Doneck: Izd-vo DonGU, 1997 - 297 s.
