温度、pH对含油污水荧光特性的影响

Effect of Temperature and pH on the Fluorescence Characteristic of Oily Waste Water

研究了中石化炼油厂出口处含油污水在温度5~55℃,pH 3~12范围内的荧光光谱特性。结果表明,温度只对含油污水的荧光强度有影响,而不改变荧光峰位置;在酸性条件下荧光峰右移,从413 nm移到426.5 nm;且荧光强度随酸性增强而递增。碱性条件下随着碱性增强荧光强度降低,但荧光峰的位置没有移动,始终保持在398 nm。温度和pH值是含油污水荧光特性的两个重要影响因素,必要时需进行温度和pH值的校正补偿,可提高污水中油种类及含量检测的准确度。

The present study was about the effect of temperature（5~55 ℃） and pH（3~12） value on the fluorescence characteristic of oily waste water from the export of China Petroleum Chemical Oil Refinery.It was found that temperature only affects the fluorescence intensity but not the site of fluorescence peaks.The fluorescence peaks shift right that from 413 to 426.5 nm when the oily waste water is acid.And along with the enhancing of the acidity the fluorescence intensity ascended.The fluorescence intensity decreased with alkaline enhancing but the site of fluorescence peaks remained unchanged at 398 nm.Temperature and pH value were the two important impact factors on the fluorescence characteristic of oily waste water.If desired it needs correction and compensation on temperature and pH value.That＇s expected to improve the detection accuracy of oil class and content.