小中大If you deal with the preparation well during combustion ofsample, the recovery rate is perfect. I have detected a lot of sample for determination of chloride and bromide ion, and the range of recovery rate is from 95.63% to 109.53%. It meets the requirement of EN 14582. Concerning to the test of halogen ion by combustion ways, the following content ought to be pay attention to carefully.
1)All vessels must be very clean, and they must be rinsed by ultrapure water;
2)All receiving solution must be used ultrapure water to dissolve or dilute, and the concertration of receiving solution ought to be accordant during test period.
3)The sample must be burnt completely.
4)The oxygen vessel must be cleaned for three times at least. and confrim it is very clean.
5)After the samples are burnt, the gas in oxygen vessel ought to be receipted in eluent solution.
6)The content of chloride or bromide ion must be at the middle of standard curve.
7)The CC of standard curve must be greater than 99.9%.
8)Operator or analyst must verify the standard curve everytime of test. it is possible, suggest you make the standard curve everytime.
9)The IC ought to be steadby about the single of detector before carrying out the test.
