METHODS: Four components:ginsenoside Rg_1、ginsenoside Re、ginsenoside Rb_1 and schisandrin in Shengmai Injection were determined simultaneously by HPLC, using a waters symmetryshield TMRP_(18) column(4.6 mm×250 mm; 5.0 μm),acetonitrile-water as a mobile phase.
Employing the redox between KI and H 2O 2 as an indicator reaction, the mixture of Cr 6+ , Mo 6+ and W 6+ are determined simultaneously by using this method.
Norepinephrine(NE),epinrphrine(E),3,4-dihydroxyphenylacetic acid(DOPAC),dopamine hydrochloride(DA),homovanillic acid(HVA),and 5-hydroxytryptamine(5-HT) could be determined simultaneously and distinctly separated from internal standard(3,4-dihydroxybenzylamine,DHBA) by this method.
Seven trace elements(Sr,Ba,Fe,Cu,Zn,Mn,Mo) in eight kinds of vegetables were simultaneously determined by means of ICP-AES with recoveries of 91.9%—108.4%.
Abstract The contents of 14 trace elements (Fe, Ni, Cu, V, Pb, K, Na, Ca, Mg, Al,Zn, Mn, Co, Mo) in various crude oils and heavy oils were simultaneously determined by ICP-AES.
A method for simultaneous determination of Si, Mn, Fe, Ca, Mg, Al and Ti in Co rich crusts from the Pacific Ocean by ICP AES was developed. Samples were dissolved in mixed acid (HCl+HNO 3+HF) and in a medium of 0.2 mol/L HF and 0.3 mol/L H 3BO 3.7 elements mentioned above were simultaneously determined by ICP AES.
The contents of vitamin C and creatinine in urine of men were simultaneously determined with high performance liquid chromatography method by Micropak-CH Column and use methanol: 5mM-dodecylsulfonate (40:60) as mobile phase at UV 254 nm.
It was confirmed that this method was rapid, simple, highly sensitive, stable, and had the property of simultaneous determination of PCn and other thiol-containing compounds.
These features were exploited to improve analytical performances in simultaneous determination of the minor ingredient of pseudoephedrine hydrochloride and the major ingredient of ibuprofen in a pharmaceutical preparation.
A rapid and reliable high performance liquid chromatographic (HPLC) method for the simultaneous determination of heterocyclic compounds, namely nicotinic acid, nicotinamide, and 3-cyanopyridine, in industrial effluent is described.
A method for simultaneous determination of the particle size and velocity in a supersonic, two-phase luminescent jet consisting of a gas phase and the particles is considered.
The problem is regarded as coupled, the convective process in the liquid being determined simultaneously with the solution of the heat-conduction problem in the surrounding rock.
Natural killer and suppressor activities were determined simultaneously for metrial gland granulated cells and splenocytes of the same rat with common cell targets.
The data were compared to the hydrochemical parameters (temperature, salinity, BOD5, dissolved oxygen, phosphates, organic phosphate, detergents) determined simultaneously.
Multivariate statistical process control methods, which are recommended for use in the cases of a great number of simultaneously determined factors, are briefly discussed.
Although there is a spectral overlap between the absorbance spectra of complexes Cu2+-NH3 and Cu2+-citrate, they have been simultaneously determined using an artificial neural network (ANN).
A simultaneous analysis is performed of the modified Rayleigh equation and asymptotic representation of the self-similar solution of the problem formulated on the basis of the energy model with a variable temperature of the interface.
The device is used as a mass and energy spectrometer for the simultaneous analysis of the hydrogen (0.8-80 keV) and deuterium (0.66-36 keV) charge-exchange fluxes emitted by a plasma.
One advantage of the multiresonance technique is that simultaneous analysis is performed for the entire set of resonance frequencies, which substantially increases the accuracy in finding the reflection coefficient.
同时测定
simultaneous determination
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