A simple and sensitive method was developed for the simultaneous determination of four macrolides in pork using high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS).Homogenized sample was extrac...
A new LC-MS method has been established for determination of momoiodotyrosine(MIT) and diiodotyrosine(DIT) in the hydrolysate of premix feeds.Samples was hydrolyzed with 4.0 mol·L-1 NaOH for 16 h at 110 ℃,then the h...
The products of thermal desorption were generated under the temperature of 280 ℃ and were analyzed by gas chromatography-mass spectrometry with capillary column,the residual monomer styrene was no detected.The produc...
Surfactant is widely used in the industry,and its determination is important in both performance and quality control consideration.A liquid chromatography coupling mass spectrometry(LC-MS)method was established for an...
In this paper,the synthetic product,2,4-Pentadiol dibenzoate,was studied by gas chromatography-mass spectrometry with capillary column and liqud chromatography-mass spectrometry,respectively,and the structures of the ...
A data processing combination of manual and automatic steps for mass peaks identification of a coking gas oil was illustrated.Some representative compounds were identified by manual process.A program was performed to ...
The presented work is to determine the mass fraction of angiotensinⅠ in solution by isotope dilution method,which is a pilot study organized by Consultative Committee for Amount of Substance.Firstly,the hydrolysis ti...
The metabolites and metabolic passways of nitrazepam in rat were confirmed.Wistar rats were feed a pill of nitrazepam,24 h urine reactions were collected.After β-Glucuronidase hydrolysis of the urine samples,the frac...