非分散红外法测定增压输送管路表面残留油脂含量

Determination of Residual Oil Content on Pressurized Supercharged Pipeline Surface by Non-dispersive Infrared Method

建立了以非分散红外法测定水中油类物质方法为依据,结合增压输送管路实际特征,测定增压输送管路表面残留油脂含量的方法,并研究了其可行性。用脱脂棉球蘸取萃取剂六氯四氟丁烷擦拭增压输送管路表面,挤出样液至容量瓶中,后定容至50ml,以浓度为200mg/L的B重油标液做量程校准溶液,六氯四氟丁烷萃取剂做零点校准溶液,测试样品,根据测试结果评价产品表面清洁度,并在测试后用氧化铝、活性炭回收萃取剂,减少对环境负担。测得该方法检出限为0.04mg/L,测得空白加标回收率为85.6%~95.8%,试验结果验证了本方法的可行性。

Based on the non-dispersive infrared method for the determination of oil in water and the actual characteristics of the pressurized pipeline,a method for the determination of residual oil content on the surface of the pressurized pipeline is established and its feasibility is studied.Use absorbent cotton ball dipped in the extracting agent S-316 to wipe the surface of pressurized conveying pipeline,extrude the sample solution into a volumetric bottle,and then constant volume to 50ml,the sample was tested of using B heavy oil standard liquid with a concentration of 200mg/L as the span calibration solution,while using the S-316 extraction agent as the zero-point calibration solution.The surface cleanliness of the product was evaluated according to the test results,and the extraction agent was recovered with alumina and activated carbon after the test to reduce the environmental burden.The detection limit of this method was 0.04mg/L,and the recovery rate of the blank addition was 85.6%~95.8%.The test results verified the feasibility of this method.