Assaying aluminium in drinking water.

摘要

The aluminium content in a water supply is determined by a method which involves forming the aluminium in a sample stream of the water into a complex with added fluoride and sensing the fluoride content electrically. Equipment for carrying out the invention comprises means (10) to mix a sample stream (in 1) with a standard sodium fluoride solution (in 9), warm it (in 12) and sense the PD generated between electrodes 13 and 14. Solutions of known aluminium concentration can be drawn from reservoirs 3 and 4 to calibrate the fluoride ion selective electrode 14.