关键词:盐酸二甲双胍缓释片;杂质;双氰胺;HPLC中图分类号R927.2文献标识码A文章编号1007—306(2006)01-29,03TheComparisonBetweentwoHPLCColumnfortheDeterminationoftheImpurityofMetforminHydrochlorideSustainedReleaseTabletsDUNing,QIANWen,ZHOUYan-U2JiangsuInstituteforDControl(Nanjing210008)5angsuProvinc~PeoplesHospital(...
Comparison Techniques for HPLC Column PerformanceThe article considers the different methods that can be used to compare the performance of liquid chromatography columns and evaluates the advantage of the high pressures and high temperatures some of them can be used at. The main focus is on the ...
Smart tips: Increase your column lifetime. How to identify the column degradation Find resolution on the right selectivity. Our most popular (U)HPLC selectivities Flyer: Column care guide and general method development information for Thermo Scientific hydrophobic columns ...
and Guinchard, G, “Study and Optimization of Column Efficiency in HPLC: Comparison of Two Methods for Separating Ten Benzoidiazepines”, J. Liq. Chrom. , 17 , 1443 (1995b). View ArticleGuillaume, Y.; Guinchard, C. Study and optimization of column effi- ciency in HPLC: comparison ...
ParticleSizesmall(3µm)medium(5µm)large(10µm)ColumnLengthshort(30mm)medium(150mm)long(300mm)ColumnIDnarrow(2.1mm)medium(4.6mm)wide(22.5mm)SurfaceArealow(200m2/g)high(300m2/g)PoreSizesmall(60Å)medium(100Å)large(300Å)CarbonLoadlow(3%)medium(10%)high(20%)BondingTypemonomeric...
as well as the extent to which data pre-treatment will mitigate these effects. The experimentally obtained HPLC data are in the type of molar proportion, which means the total VFA content are all approximately equal to 1. In this case, there is no comparison of the total rumen volatile fatt...
The commercial CDTect [TM] assay was used as a comparison method. Serum samples from nondrinkers (n = 57), moderate drinkers (n = 77), and heavy drinkers (n = 139) were analyzed. Results: In ROC analysis for differentiation between moderate and heavy drinkers, the area under the curve...
In comparison to calcium carbonate, silica or polymer gels are commonly utilised as packing materials. Detector The separation of analytes takes place inside the column, and the separation is seen using a detector. When no analyte is present, the eluent has a constant composit...
3 Comparison of HPLC fingerprints of single herb and JHD 采用 LC-Q-TOF/MS 正,负离子模式获得 JHD 指纹 图谱中化合物的质谱信息见图 4,并采用对照品对 色谱峰进行确认,同时结合处方中各药材化学成分 研究相关文献报道[11-17],建立了各单味药成分的化 合物数据库,共鉴定了 70 个化合物,见表 3. ...
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