滴定法测定食用植物油中过氧化值内部质控方法探讨

Discussion on the internal quality control method for determining the peroxide value in edible vegetable oil by titration method.

为探讨滴定法测定食用植物油中过氧化值含量的有效内部质量控制方法,采用质量控制图分析了2018年过氧化值测定过程使用的质控样检测数据。结果表明:由于过氧化值本身性质的不稳定,造成两条质量控制图整体上均呈上升趋势;应缩短过氧化值质控样的使用时间,并相应增加平行双样、人员比对等其他内部质量控制手段,确保过氧化值检测结果的准确可靠。

The test data of the quality control sample used in the determination of peroxide value in 2018 were analyzed by the quality control chart.The results showed that due to the instability of the peroxide value itself,the two quality control charts were on the rise as a whole.To ensure the accuracy and reliability of peroxide value detection results,the use time of peroxide value quality control samples should be shortened,and other internal quality control methods,such as parallel double samples and personnel comparison,should be increased.