紫外分光光度法测定三甘醇中凝析油含量  

Determination of condensate oil in triethylene glycol by UV spectrophotometry

作　　者：贺清华 温欣[2] 郝丽[2] 温立宪[2] 谢娟[1] HE Qinghua;WEN Xin;HAO Li;WEN Lixian;XIE Juan(College of Chemistry and Chemical Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China;Gas Production Plant 1 of PetroChinaChangqing Oilfield Company,Jingbian Shaanxi 718500,China)

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]中国石油长庆油田分公司第一采气厂,陕西靖边718500

出　　处：《石油化工应用》2023年第10期109-113,共5页Petrochemical Industry Application

摘　　要：针对某油田的三甘醇样品,通过确定在波长220 nm下,测得不同浓度的混配凝析油的吸光度,从而建立凝析油浓度标准曲线,采用紫外分光光度法测定三甘醇样品中的凝析油含量。结果表明,拟合凝析油浓度标准曲线的重现性良好,且3次拟合吸光度与凝析油浓度的直线方程的相关系数均在0.9990以上。在不同吸光度下,分别采用3次标准曲线计算的凝析油浓度的相对标准偏差均小于5.000%,表明重现性良好,故该方法可用于测定三甘醇样品中凝析油含量,且准确性较高。For a triethylene glycol sample from an oilfield,the absorbance of different concentrations of mixed condensate was measured at the wavelength of 220 nm,so as to establish the condensate concentration standard curve and determine the condensate content in the triethylene glycol sample by UV spectrophotometry.The results showed that the reproducibility of the fitted standard curve of condensate concentration was good,and the correlation coefficients of the three fitted linear equations of absorbance and condensate concentration were above 0.9990.The relative standard deviations of the condensate concentrations calculated by the three standard curves at different absorbances were less than 5.000%,indicating that the reproducibility was good,so the method can be used for the determination of condensate in triethylene glycol samples with high accuracy.

关 键 词：紫外分光光度法 三甘醇 凝析油 含量检测 

分 类 号：O657.32[理学—分析化学]