Application of flow injection potentiometry to the determination of chloride in various matrices

Summary The preparation and performance of a tubular chloride ion selective electrode for flow injection potentiometry is presented. The influence of system parameters on sensitivity, detection limit, response time and sample throughput are investigated. It is shown that 60–200 samples can be processed per hour within the concentration range 0.1–10,000 mg/l. The precision is generally better than 1% r.s.d. over the entire range. Application of the proposed method to analysis of tap and mineral water, emission control of hydrogen chloride and the determination of chloride in pure silicon nitride is shown to give results very well comparable to other methods.

---

Anwendung der Fließinjektions-Potentiometrie zur Bestimmung von Chlorid in verschiedenen Materialien

---

Dedicated to Prof. Dr. G. Tölg on the occasion of his 60th birthday