Objective To identify the key factors influencing the quality of determination through analyzing the uncertainty of styrene concentration in workplace air by Gas Chromatography(GC).
Methods Through establishing the mathematical model for styrene determination by GC, origins of uncertainty of various parameters influencing styrene concentration measured by GC were listed, evaluated and quantified.
Results The extended uncertainty of styrene determination was 1.2 mg/m(3 k=2).
Conclusion The study showed the choice of standard solutions, the plotting of standard curves and the repeated measurements were key factors influencing the reliability of results from determination of styrene concentration in workplace air.
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