油标对红外光度法测定水中油的影响

Effect of oil standard on the determination of oil in water by infrared spectrophotometry

油标准物质的选择是红外分光光度法测定水中油的重要环节,选择了两种不同的油标,采用红外分光光度法对水中油进行了分析,结果表明,油标不同,测量结果不同。理想的油标是从待测水样中提取,这样的油标的组成才能与被测水样中油的组分相同,红外光谱图基本相同,测定结果才准确可靠。

The selection of oil standard is an important link in the determination of oil in water by infrared spectrophotometry. Two different standards of oil are selected. The oil in water is determined by infrared spectrophotometry. The results are different when different standard of oil is selected. The ideal standard of oil is extracted from the water to be determined. Such oil contains the same composition as the oil in the water sample to be determined. When the infrared spectrogram is basically the same, the determination will be accurate and reliable.