International Journal of Photoenergy / 2008 / Article / Tab 2

Research Article

Photocatalyzed Degradation of a Pesticide Derivative Glyphosate in Aqueous Suspensions of Titanium Dioxide

Table 2

Table showing HPLC peaks retention times, , for glyphosate, sarcosine, glycine (sample rows 1–3, resp.), irradiated mixtures of glyphosate at pH 3 and pH 11 (sample rows 4 and 6, resp.), and irradiated mixtures of glyphosate at pH 3 and pH 11 with authentic samples of sarcosine and glycine (sample rows 5 and 7, resp.). Peaks associated with glyphosate, sarcosine, and glycine are shown as bold, underlined, and double underlined text, respectively.

SampleHPLC peak retention time ( )/minutes

1. Glyphosate (from Figure 3)0.941 (min), 1.184 (s)
2. Sarcosine (from Figure 4)1.105 (w), 1.531 (s)
3. Glycine (from Figure 5)0.834 (w),1.558 (s)
4. Glyphosate, 90 min Irradiation, pH30.948 (min), 1.061 (min), 1.13 (s), 1.599 (min), 1.651 (s)
5. Glyphosate (90 min irradiation, pH3) + authentic Sarcocine0.948 (min), 1.039 (min), 1.117 (s), 1.523 (min), 1.651 (s),
6. Glyphosate (60 min irradiation, pH 11)1.161 (s), 1.548 (min), 1.662 (min)
7. Glyphosate (60 min irradiation, pH 11) + authentic Glycine1.108 (s), 1.543 (min), 1.665 (min)

s-strong, m-medium, w-weak.

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