气相色谱-质谱联用技术定向筛查在用液体类油田化学助剂中8种有机氯化物

Target-screening of eight organic chloride compounds in chemical agents of liquid oil fields using gas chromatography and mass spectrometry

采用气相色谱-质谱联用技术建立了一种适用于定向筛查在用液体类油田化学助剂中8种有机氯化物的分析方法,考察了样品制备及仪器分析参数对分析过程的影响.该方法确定8种目标化合物的线性范围为2～100 ng/μL,相关系数均大于0.99,仪器检出限范围为10～120 ng/m L.在3个基质加标实验中,各目标化合物的回收率范围为77.2%～93.5%,相对标准偏差小于7%,适合实际样品中目标化合物的定向筛查.应用该方法对胜利油田提供的液体类油田化学助剂混合样品进行了有机氯化物的定向筛查,结果表明混合样品中无相关有机氯化物检出,并对产生这一结果的原因进行了解析.

A method is proposed to target-screen the eight organic chloride compounds in chemical agents of liquid oil fields using gas chromatography and mass spectrometry （GC/MS）. Parameters affecting both extraction and instrumental analysis are studied. Under optimal conditions, the linear range is from 2 to 100 ng/μL for the target compounds. The correlation coefficient R is above 0.99 for the analytes with the limit of detection （LOD） ranging from 10 to 120 ng/mL. Good recovery, ranging from 77.2% to 93.5% with relative standard deviation （RSD） less than 7%, has been achieved in the matric spiking experiments. The established method is applied to target-screen the eight organic chloride compounds in a mixed sample of chemical agents of liquid oil fields provided by the Shengli Oilfield Corporation. However, no target compound is detected in the sample. Reasons for such result are given in the paper.