Volumetric control of an electrolytic engraving process. Analysis of mixtures of hydrochloric acid, phosphoric acid and aluminium

Llorenç Alerm, Jordi Bartrolí

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

The volumetric determination of hydrochloric acid, phosphoric acid and free aluminium in electrolytic engraving bath samples is described. Three consecutive acid-base volumetric measurements were performed, using a commercial combined pH sensor to determine the equivalence volumes of each titration. Sodium fluoride was used to mask the interference of free aluminium in the quantification process for both acids, optimizing the amount of masking agent necessary for quantitative results. The results, evaluated through the preparation of synthetic samples, show good reproducibility (RSD 1%). The relative error associated with the method was less than 3%. The method presented here facilitates the analytical control of the electrochemical engraving bath in the manufacture of offset printing matrices, verifying its function and allowing the optimization and control of the production process.
Original languageEnglish
Pages (from-to)191-195
JournalAnalyst
Volume122
Issue number2
DOIs
Publication statusPublished - 1 Feb 1997

Keywords

  • Electrolytic engraving bath
  • Process control
  • Quality control

Fingerprint Dive into the research topics of 'Volumetric control of an electrolytic engraving process. Analysis of mixtures of hydrochloric acid, phosphoric acid and aluminium'. Together they form a unique fingerprint.

Cite this