电感耦合等离子体发射光谱法测定 地沟油及加氢生成物中磷含量

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中图分类号：TQO657.3

文献标志码：A

文章编号：1671-0460（2026）04-0877-05

Determination of Phosphorus Content in Gutter Oil and Its Hydrogenation Products Using Inductively Coupled Plasma Optical Emission Spectrometry

CHENG Zhongqian, TAISHI Jianyao, HU Tingyi

(Sinopec (Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd., Dalian Liaoning 116045, China)

Abstract: An analytical method for determination of phosphorus content in gutter oil and its hydrogenation products was established based on organic sample introduction-inductively coupled plasma optical emission spectrometry (ICP-OES). The analysis conditions were optimized as follows: PremiSolv diluent was selected, the detection wavelength for phosphorus was set at 213.618 nm with vertical observation mode, and quantification was performed using an internal standard calibration curve. The results demonstrated that the calibration curve exhibited good linearity with a correlation coefficient R2 greater than 0.99. The spike recovery rates for actual samples ranged from 94.7% to 110.7%, and the relative standard deviation of method repeatability tests was below 10%. The maximum relative deviation in repeatability measurements of actual samples did not exceed 9.57%.

Keywords: Inductively coupled plasma optical emission spectrometry; Gutter oil; Hydrogenation; Phosphorus content

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