If there was a difference between the two, it would imply that there are other matrices affect the Roundup. When looking at figure 2 and figure 4, the calibration curves are similar. This can be seen when looking at the dilution 0.2% where both graphs are above an absorbance of 1. Also, the relative deviations are small. With both the serial and stock dilution, the pH was the same. The purpose of determining the pH is for a future test. The pH was relatively the same as the distilled water. When testing the roundup at 100%, the pH varied from 4.12 to 4.77. The future experiment would be to pH adjust the water of each set of samples in order to see if there is a change in the spectra. This would be done with both acidic and basic
If there was a difference between the two, it would imply that there are other matrices affect the Roundup. When looking at figure 2 and figure 4, the calibration curves are similar. This can be seen when looking at the dilution 0.2% where both graphs are above an absorbance of 1. Also, the relative deviations are small. With both the serial and stock dilution, the pH was the same. The purpose of determining the pH is for a future test. The pH was relatively the same as the distilled water. When testing the roundup at 100%, the pH varied from 4.12 to 4.77. The future experiment would be to pH adjust the water of each set of samples in order to see if there is a change in the spectra. This would be done with both acidic and basic