Printing time：2006/12/23 ，16:0

Getting sample time：2006/10/20 ，15:1

Ion Chromatography：PIC-10  ion chromatography  Chromatogram Column：shodex IC-52-4E，250mm×4.6mm

Detector: conductance detector 　Eluent：3.6mmol/L Sodium carbonate

Range：1 ^nd  Restrain current：20 mA

 Flux ：0.8ml/min Column temperature：40℃ 

Getting sample capacity ：20μL Sample ： A certain brand of Qingdao flour

Pressure:10.5Mpa  Analyzer：liwei、boying、yujijin

 Open ：

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Serial number   retention time  Name Concentration  Peak area  Peak isolation  Theoretic tray quantity

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1 9.476 BrO3 0.0158 1427 0.00 16596 

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Total 0.0158 1427 
Sample disposing approach:
Weighing a certain amount of flour, samples formed after dissolving by ultrasound concussion, centrifugal layer, ultrafiltration and wiping off organic.
Calculated reclaim rate is between 97% and 102% after callback and the detecting limit less than 0.008mg/L. According with national standard GB/T 20188-2006 proved the sample disposal approach meets the need in application.
Optimizing analysis condition:
Applied advanced precise temperature controlled technology in domestic ion chromatogram to assure the maximum exertion of chromatogram’s advantages. Isolation with chlorine reaches 2.34, better than other domestic instrument factories. Fit for BrO3 trace analysis in high chlorine background.