Factorial analysis of a chemiluminescence system for bromate detection in water

摘要: Abstract A chemiluminescent flow system for bromate detection, based on the reaction of with sulphite in acid medium and using steroid hydrocortisone as sensitiser, was studied. factorial analysis strategy study effect response experimental factors, rates two pumps (Q1 — plus aqueous solution; Q2 carrier, water), sample injection volume (VL), reactor (VR), concentration (CS), (CH) (CA), used. Screening performance made Plackett Burman designs. The optimisation procedure achieved by three levels factors full VL CH are most significant a quadratic term also observed to be significant. optimised responded linearly (logarithm detector signal function logarithm concentration) range between 3.6×10−7 5.0×10−4 M limit detection about 8.0×10−8 M (about 10 microg/l). An some interfering ions it suggested that bromide chloride begin quench chemiluminescence when they 10-fold excess relatively concentration.