Abstract：The residual organic matters in nickel electrolyte would cause air holes on nickel plate surface, thus influencing the appearance quality of products. In order to determine the content of sulfonated kerosene (which was an important component of organic matters) in nickel electrolyte, the static-state headspace gas chromatography was adopted in the experiment. The hydrogen flame ionization detector (FID) was used for direct sampling and determination without extraction. The experimental conditions of headspace analysis were optimized. The optimal equilibrium temperature (80 ℃) and equilibrium time (60 min) were obtained. Under the optimized conditions, the detection limit of method was 0.008 mg/L (3S/N), the linear range was 0.1-100 mg/L, and the linear correlation coefficient of calibration curve was higher than 0.96. The chromatograms of actual nickel electrolyte sample and standard solution of sulfonated kerosene were compared. It was found that the peak position of each component was consistent. The relative standard deviation (RSD, n=6) of determination results of two samples was 5.3% and 4.5%. The recoveries were between 92% and 104%.
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