Determination of Aminoglycoside Modification Enzymes by MIC Ratio Method and its Comparison with Radioactive Assay

Hacettepe Medical Journal


Determination of Arsenobetaine in Fish Tissue by Species Specific Isotope Dilution LC-LTQ-Orbitrap-MS and Standard Addition LC-ICPMS
Yang, Lu; Ding, Jianfu; Maxwell, Paulette; McCooeye, Margaret; Windust, Anthony; Ouerdane, Laurent; Bakirdere, Sezgin; Willie, Scott; Mester, Zoltan (American Chemical Society (ACS), 2011-05-01)
An accurate and precise method for the determination of arsenobetaine (AsB, (CH(3))(3)(+)AsCH(2)COO(-)) in fish samples using exact matching species specific isotope dilution (ID) liquid chromatography LTQ:Orbitrap mass spectrometry (LC-LTQ-Orbitrap-MS) and standard addition LC inductively coupled plasma mass spectrometry (LC-ICPMS) is described. Samples were extracted by sonication for 30 min with high purity deionized water. An in-house synthesized (13)C enriched AsB spike was used for species specific ID...
Determination of binary pesticide mixtures by an acetylcholinesterase-choline oxidase biosensor
Kok, FN; Hasırcı, Vasıf Nejat (2004-02-15)
In this study, acetylcholinesterase (AChE) and choline oxidase (ChO) were co-immobilized on poly (2-hydroxyethyl methacrylate) (pHEMA) membranes to construct a biosensor for the detection of anti-cholinesterase compounds. pHEMA membranes were prepared with the addition of SnCl4 to achieve the desired porosity. Immobilization of the enzymes was done by surface attachment via epichlorohydrin (Epi) and Cibacron Blue F3G-A (CB) activation. Enzyme immobilized membrane was used in the detection of anti-cholineste...
Determination of selected natural hormones and endocrine disrupting compounds in domestic wastewater treatment plants by liquid chromatography electrospray ionization tandem mass spectrometry after solid phase extraction
Muz, Melis; SÖNMEZ, MARGARET JEANNE M.; Komesli, Okan Tarik; Bakirdere, Sezgin; Gökçay, Celal Ferdi (2012-01-01)
A new analytical method for the simultaneous determination of two natural hormones (progesterone and estrone) and two selected endocrine disrupter compounds (EDCs) (diltiazem and carbamazepine (Cbz)) was developed by liquid chromatography electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) after pre-concentration with solid phase extraction (SPE). Influent and effluent samples taken from five different wastewater treatment plants throughout Turkey namely Hurma/Antalya, Lara/Antalya, Kemer-1 and ...
Determination of minor and trace elements in bone samples by neutron activation analysis and luorine by ion selective electrode
Yılmaz, Gülay; Aras, Namık K; Department of Chemistry (1997)
Determination of SARA fractions of crude oils by NMR technique
Kök, Mustafa Verşan; Nurgaliev, Danis K. (Elsevier BV, 2019-08-01)
In this research, four different crude oils from Tatarstan oil fields with wide range of API gravities (from 16.6 to 32.5 degrees API) were used for hydrogen and carbon nuclear magnetic resonance spectroscopy (H NMR and C NMR) determinations. The hydrogen and carbon aromaticity factors were calculated by using the results of H NMR and C NMR spectroscopy results. The results show that the aromaticity factors were high for heavy crude oils. For predicting SARA fractions, the correlations were developed as a f...
Citation Formats
S. Kocabıyık, “Determination of Aminoglycoside Modification Enzymes by MIC Ratio Method and its Comparison with Radioactive Assay,” Hacettepe Medical Journal, pp. 145–156, 1988, Accessed: 00, 2021. [Online]. Available: 0.