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Volume 32, Number 3, 1990

Contents

PARTICIPANTS v
International Workshop of Intercomparison of Radiocarbon Laboratories:
Welcome - The Aims - The Programme
  MS Baxter 253
SESSION I
An Overview of Some Interlaboratory Studies
  EM Scott, MS Baxter, TC Aitchison, DD Harkness and GT Cook 259
International Collaborative Study: Structuring and Sample Preparation
  GT Cool; DD Harkness, BF Miller, EM Scott, MS Baxter and TC Aitchison 267
Report on Stage 3 of the International Collaborative Program
  TC Aitchison, EM Scott, DD Harkness, MS Baxter and GT Cook 271
DISCUSSION 279
SESSION II
Sources of Random Error in the Debrecen Radiocarbon Laboratory
  Ede Hertelendi 283
Systematic Biases in Results of the International Collaborative Study and Their Probable Sources
  MF Pazdur, Romuald A wsiuk Tomasz Goslar and Anna Pazdur 289
Radiocarbon Dating of Intercomparison Samples at the Zagreb Radiocarbon Laboratory
  Nada Horvatincic, Dugan Srdoc, Bogomil Obelic and Ines Krajcar Bronic 295
Radiocarbon Dating Reproducibility at the Museo de La Plata Radiocarbon Laboratory
  Anibal Figini, Roberto Huarte and Jorge Carbonari 301
SESSION III
An Overview of All Three Stages of the International Radiocarbon Intercomparison
  EM Scott, TC Aitchison, DD Harkness, GT Cook and MS Baxter 309
Radiocarbon Dating Problems Using Acetylene as Counting Gas
  Mebus A Geyh 321
DISCUSSION 325
SESSION IV
A Suggested Quality Assurance Protocol for Radiocarbon Dating Laboratories
  Austin Long and Robert M Kalin 329
High-Precision Intercomparison at IsoTrace
  Roelf P Beukens 335
A Consideration of Some Basic Ideas for Quality Assurance in Radiocarbon Dating
  Roy Switsur 341
Statistical Quality Control Graphs in Radiocarbon Dating
  Roy Switsur 347
Routine Checks in the Uppsala Conventional 14C Laboratory to Achieve Reliable Results
  Ingrid U Olsson 355
Checking Back on an Assemblage of Published Radiocarbon Dates
  MGL Baillie 361
SESSION V
Intercalibration of Environmental Isotope Measurements: The Program of the International Atomic Energy Agency
  Roberto Gonfiantini, Kazimierz Rozanski and Willibald Stichler 369
DISCUSSION 375
SESSION VI
Time-Resolved Liquid Scintillation Counting
  Michael Kessler 381
DISCUSSION 387
Report of the International Workshop of Intercomparison of Radiocarbon Laboratories: Summary of the Meeting
  MS Baxter 389
Quality Assurance Protocol for Radiocarbon Laboratories
  Austin Long, Compiler 393