高效液相色谱法测定冷冻机油中BTPP含量

High Performance Liquid Chromatography for Determination of BTPP Content in Refrigerant Oil

中文关键词:  高效液相色谱法,磷酸酯类抗磨剂,冷冻机油

英文关键词:normal-phase high performance liquid chromatography,organic phosphate type anti-scuff agent,refrigerant oil

中文摘要:

      将正相高效液相色谱法用于冷冻油中抗磨剂(BTPP)含量测定研究，建立了抗磨剂(BTPP)含量的快速分离检测方法.使用氨基键合相分析柱，以二氯甲烷∶正庚烷(80∶20,V/V)二元混合溶剂为流动相，流速为1.0 mL/min，于262 nm波长处检测.最低检测限为0.026 1%，相关系数在0.999 9以上.BTPP加标回收率为100±3.0%(n=4)，日内测定结果的相对标准偏差RSD小于2.0%（n=8），方法快速、准确、重现性好，不需要复杂的样品预处理，实用性强，对环境污染小.

英文摘要:

      Normal-phase High Performance Liquid Chromatography Method was applied in the research of anti-scuff agent (BTPP) content in refrigerant oil determination, and established the rapid segregation test method of BTPP content. Use the amino-linkage phase analytical column, the dichloromethane:n-heptane (80∶20,V/V) binary mixture solvent as mobile phase, flow rate is 1.0 mL/min, then tests in 262 nm wavelength. The lowest detection limit is 0.0261%, correlation coefficient is above 0.9999. The percent recovery of BTPP by adding standard substance is 100±3.0%(n=4), the measurement result of relative standard deviation RSD in one day is below 2.0%(n=8), this method is rapid, accurate and good repeatability, it needn’t complicated sample pretreatment, it also has good practicability and it is less pollution.