Effect of Nitric Acid on the Low Fluorescing Performance of Drilling Fluid Lubricant Based Animal and Vegetable Oils

<table>Effect of nitric acid content on properties of low fluorescence lubricant.</table>

Journal of Spectroscopy

Figure 2: Effect of Nitric Acid on the Low Fluorescing Performance of Drilling Fluid Lubricant Based Animal and Vegetable Oils 