Chemometric investigations on the representativity of soil sampling Jürgen EinaxBernd MachelettKlaus Danzer Original Papers Pages: 267 - 272
Use of a data treatment software for the resolution of overlapping differential pulse polarographic peaks J. J. Berzas NevadoJ. Rodríguez Flores Original Papers Pages: 273 - 275
Potentiometric and conductometric determination of ammonium by gas-diffusion flow injection analysis Wolfgang FrenzelCheng-Yu Liu Original Papers Pages: 276 - 280
Preparation and properties of an 8-hydroxyquinoline silica gel, synthesized via mannich reaction U. PyellG. Stork Original Papers Pages: 281 - 286
Karl Fischer titration in boiling methanol H. -D. IsengardU. Striffler Original Papers Pages: 287 - 291
Fiber optic near-infrared spectroscopy in the refining industry Susan J. FoulkBruce E. DeSimas II Original Papers Pages: 292 - 294
Evaluation of the interelemental effect in X-ray fluorescence analysis by the total addition method F. Bosch ReigV. Peris MartinezJ. V. Gimeno Adelantado Original Papers Pages: 295 - 298
Certification of VL-2, a Venezuelan lateritic material as a standard reference material J. J. LaBrecqueH. Schorin Original Papers Pages: 299 - 305
Certification of SLB-1, a Suriname lateritic bauxite material as a standard reference material J. J. LaBrecqueH. Schorin Original Papers Pages: 306 - 311
Examination of steel samples, provided as reference materials, by instrumental analyses P. HoffmannR. JährlingK. H. Lieser Original Papers Pages: 312 - 317
Simultaneous spectrophotometric determination of metal ions with 4-(pyridyl-2-azo)resorcinol (PAR) E. GómezJ. M. EstelaM. Blanco Original Papers Pages: 318 - 321
A new kinetic photometric method for the simultaneous determination of metals based on catalytic and activating effects A. CladeraA. CaroV. Cerdà Original Papers Pages: 322 - 326
Indirect kinetic determination of As(III) based on its accelerating effect on the Os(VIII)-catalysed reaction between iodide and bromate in a micellar medium Dolores SiciliaSoledad RubioDolores Pérez-Bendito Original Papers Pages: 327 - 332
Separation and determination of S-anions in very small samples by microbore ion chromatography M. WeidenauerP. HoffmannK. H. Lieser Original Papers Pages: 333 - 336
Determination of thorium in the range of low concentrations R. HillK. H. Lieser Original Papers Pages: 337 - 340
Adsorptive stripping voltammetric determination of cobalt at ppb levels in high-purity aluminium Pamidi V. A. PrasadJ. ArunachalamS. Gangadharan Original Papers Pages: 350 - 351
Investigation for the determination of ultra trace amounts of Co2+ complexed with 1,10-phenanthroline by adsorptive voltammetry Vassiliki I. BebekiAnastasios N. Voulgaropoulos Original Papers Pages: 352 - 356
Separation of arsenic anions by capillary zone electrophoresis with UV detection P. MorinM. B. AmranM. Leroy Original Papers Pages: 357 - 362
Phase analysis of high-temperature superconductors by selective dissolution combined with ICP-AES Zhu JianzhongI. G. VasilevaZ. I. Boris Original Papers Pages: 363 - 366
Characterisation of high-critical temperature superconducting materials by ICP-AES technique Madhuri J. KulkarniAparna A. ArgekarM. D. Sastry Original Papers Pages: 367 - 369
Determination of arsenic in glass and raw materials for glass via quartz-tube hydride generation AAS after separation by solvent extraction Udo RohrLothar Meckel Original Papers Pages: 370 - 375
Characterization of a chelating silica gel with immobilized 2-amino-1-cyclopentene-1-dithiocarboxylic acid (ACDA) U. PyellG. Stork Original Papers Pages: 376 - 380
Possibilities for the identification of organic coating on inorganic matter R. DoiberN. Wamser Original Papers Pages: 381 - 386
Diethyldithiocarbamate (DDTC) extraction of copper(II) and iron(III) associated with humic substances in water Masataka HiraideHiroshi HommiHiroshi Kawaguchi Original Papers Pages: 387 - 390
Simultaneous determination of arsenic, selenium and antimony in water by an inductively coupled plasma hydride method L. PretoriusP. L. KempsterJ. F. van Staden Original Papers Pages: 391 - 393
A fiber optic evanescent field absorption sensor for monitoring organic contaminants in water J. BürckJ. -P. ConzenH. -J. Ache Original Papers Pages: 394 - 400
Continuous flow thin-layer headspace (TLHS) analysis E. KozłowskiT. GóreckiE. Sieńkowska-Zyskowska Original Papers Pages: 401 - 404
Storage stability of polycyclic aromatic hydrocarbons collected from ambient air using solid supports Gerd KlosterReinhard NiehausHelene Stania Original Papers Pages: 405 - 408
Aspects of cleaning environmental materials for multi-element analysis, e.g. plant samples Bernd Markert Original Papers Pages: 409 - 412
A simple method for the determination of amitrole in drinking and ground water A. PachingerE. EisnerH. Klus Original Papers Pages: 413 - 415
Retention-index based vapor pressure estimation for polychlorobiphenyl (PCB) by gas chromatography Regina C. FischerR. WittlingerK. Ballschmiter Original Papers Pages: 421 - 425
On-line sample preparation and determination of phenols with a Flow-Analysis method C. KwadeR. VoigtländerK. Cammann Original Papers Pages: 426 - 428
Preconcentration and determination of bentazepam at C18-modified carbon paste electrodes P. HernándezE. LorenzoL. Hernández Original Papers Pages: 429 - 432
Determination of environmental caused chlorophenol levels in urine of the general population J. AngererB. HeinzowG. Lehnert Original Papers Pages: 433 - 438
Spectrophotometric determination of iron(II) in anti-anaemic preparations using a newly developed Schiff's base Prodromos B. IssopoulosPantelis T. Economou Original Papers Pages: 439 - 443
Multielement analysis of biological reference materials by total-reflection X-ray fluorescence and inductively coupled plasma mass spectrometry in the semiquant mode Klaus GüntherAlex von BohlenReinhold Klockenkämper Original Papers Pages: 444 - 448
On the determination of phosphorus in some processed fruit products by wet-digestion and dry-ashing methods — a preliminary report C. F. OduozaS. A. Thomas Original Papers Pages: 449 - 451
Microwave muffle furnace assisted decomposition of vegetable samples for flame atomic spectrometric determination of Ca, Mg, K, Fe, Mn and Zn A. Morales-RubioA. SalvadorM. de la Guardia Original Papers Pages: 452 - 456
A coupled NMR and MS isotopic method for the authentication of natural vinegars Gérald RemaudClaude GuillouGérard J. Martin Original Papers Pages: 457 - 461
Simultaneous determination of ascorbic acid and dehydroascorbic acid by HPLC with postcolumn derivatisation and fluorometric detection Michaela CapellmannHermann M. Bolt Original Papers Pages: 462 - 466