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顶空气相色谱-荧光技术测定燃料油中硫化氢

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实际生产检测过程中,燃料油中的硫化氢(H2S)主要是通过快速液相萃取法和气相色谱法进行检测.针对两种方法中样品前处理过程复杂、受人为影响大及对仪器造成损害等问题,文章采用顶空进样气相色谱-荧光检测技术实现了对燃料油中H2S的准确测定.结果表明,顶空进样气相色谱-荧光检测技术测定H2S的相关系数达0.99以上,定量限和检出限分别达到了0.3 mg/kg和0.1 mg/kg,RSD低于4.0%.在实际油品检测中,燃料油中H2S含量的测定结果与英国石油学会标准IP 570/15的差异并不明显,相对误差<4.0%,证实了顶空进样气相色谱-荧光检测技术对于燃料油中H2S含量测定的准确性.该检测方法的建立为燃料油及石油化工行业中H2S检测方法的开发提供了借鉴,为简化油品检测前处理过程、提高检测效率提供了条件.
Determination of Hydrogen Sulfide in Fuel Oil by Headspace Gas Chromatography-Fluorescence Detection
At present,hydrogen sulfide(H2S)in fuel oil is primarily detected using rapid liquid-phase extraction and gas chromatography methods.To address the issues of complex sample pretreatment,significant human error,and potential instrument damage associated with these methods,the article employs headspace sampling gas chromatography with fluorescence detection for accurate measurement of H2S in fuel oil.The results indicate that the headspace sampling gas chromatography-fluorescence detection technique achieves a correlation coefficient above 0.99 for H2S measurement,with a quantitation limit and detection limit of 0.3 mg/kg and 0.1 mg/kg,respectively,and an RSD of less than 4.0%.In practical fuel oil testing,the measurement results for H2S content using this technique showed no significant difference compared to the British Petroleum Standard IP 570/15 Determination of Hydrogen Sulfide in Fuel Oils-Rapid Liquid Phase Extraction Method,with a relative error of less than 4.0%.This confirms the accuracy of the headspace sampling gas chromatography-fluorescence detection technique for determining H2S content in fuel oil.The establishment of this detection method provides a reference for the development of H2S detection methods in the fuel oil and petrochemical industries,simplifying the sample pretreatment process and improving detection efficiency.

fuel oilhydrogen sulfidedetectionheadspace gas chromatographyfluorescence detection

刘慧琴、谢良波、边晖、陈时远、刘淑贞

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广东省惠州市石油产品质量监督检验中心

天津市产品质量监督检测技术研究院

国家市场监管技术创新中心(石油石化产品质量安全)

燃料油 硫化氢 检测 顶空气相色谱 荧光检测

2024

油气田环境保护
中国石油天然气集团公司安全环保与节能部 中国石油天然气股份有限公司安全环保与节能部 中国石油集团安全环保技术研究院

油气田环境保护

影响因子:0.367
ISSN:1005-3158
年,卷(期):2024.34(5)