Soil sample Concentration of glucose added (mg) Concentration of glucose founda (mg) Recovery (%) RSD (%)
1 72 69.1 96.0 3.90
144 136 94.4 4.67
288 281 97.6 5.56
2   72 67.5 93.8 3.90
216 191 88.4 4.03
360 369 103 5.52
3   252 241 95.6 4.25
432 441 102 5.33
aAverage values from five measurements.
Table 2: Results of the glucose assay and recovery test for soil samples.