Universal tracer monitored titrations

Michael D. Degrandpre, Todd R. Martz, Robert D. Hart, David M. Elison, Alice Zhang, Anna G. Bahnson

Research output: Contribution to journalArticlepeer-review

Abstract

Titrations, while primarily known as the chemical rite of passage for fledgling science students, are still widely used for chemical analysis. With its many years of existence and improvement, the method would seem an unlikely candidate for innovation, yet it is desirable, in this age of autonomous sensing where analyzers may be sent into space or to the bottom of the ocean, to have a simplified titrimetric method that does not rely upon volumetric or gravimetric measurement of sample and titrant. In previous work on the measurement of seawater alkalinity, we found that use of a tracer in the titrant eliminates the need to measure mass or volume. Here, we show the versatility of the method for diverse types of titrations and tracers. The results suggest that tracers may be employed in all types of titrations, opening the door for greatly simplified laboratory and field-based chemical analysis.

Original languageEnglish
Pages (from-to)9217-9220
Number of pages4
JournalAnalytical Chemistry
Volume83
Issue number24
DOIs
StatePublished - Dec 15 2011

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