On-line chromatographic pretreatment of samples with varying salt concentrations for capillary electrophoresis J. R. VeraartC. GooijerU. A. Th. Brinkman Originals Pages: 581 - 588
Influence of mobile phase conditions on the clean-up effect of restricted-access media precolumns for plasma samples injected in a column-switching system Z. YuD. Westerlund Originals Pages: 589 - 594
Solid phase extraction of polychlorinated biphenyls from water containing humic substances P. BonifaziE. PieriniF. Bruner Originals Pages: 595 - 600
GC determination of volatile components in human exhalation and in ambient atmosphere, after preconcentration on solid sorbents T. QinX. B. XuK. Stulik Originals Pages: 601 - 604
HPLC analysis of fat-soluble vitamins on standard and narrow bore columns with UV, electrochemical and particle beam MS detection R. AndreoliM. CareriM. Musci Originals Pages: 605 - 612
Molecular shape recognition of polycyclic aromatic hydrocarbons with various alkyl diphenyl bonded phases in microcolumn liquid chromatography K. JinnoC. OkumuraY. -L. Chen Originals Pages: 613 - 618
HPLC analysis of boldine in pharmaceuticals D. De OrsiL. GagliardiD. Tonelli Originals Pages: 619 - 622
Selective chiral determination of aspartic and glutamic acid in biological samples by capillary electrophoresis A. TivestenA. LundqvistS. Folestad Originals Pages: 623 - 633
An exprimental design approach to selecting the optimum liquid chromatographic conditions for the determination of vitamins B1, B2-phosphate, B3, B6 and C in effervescent tablets containing saccharin and sunset yellow FCF C. NsengiyumvaJ. O. De BeerF. Parmentier Originals Pages: 634 - 644
Determination of sorbic acid in wines with a hydrogen sulfonated divinyl benzene-styrene copolymer HPLC column A. AmatiM. CastellariG. Arfelli Short Communication Pages: 645 - 648
Chromatographic mobility of some metals on paper impregnated with lignin N. BrajenovićS. KvederO. Hadžija Short Communication Pages: 649 - 650
M. S. Tswett's correspondence with John Briquet II. Letters from St. Petersburg (1896–1898) I. M. HaisM. NiangL. S. Ettre Historical Papers Pages: 651 - 662
M. S. Tswett's correspondence with John Briquet III. The two late letters (1915–1917) I. M. HaisM. NiangL. S. Ettre Historical Papers Pages: 663 - 667