The Potatoes from the local market had 25% more Cd present than the potatoes from the supermarket. No Cd was detected in the carrots since the concentrations were less than 0.01mg/kg, the detection limit on the instrument used.
The Potatoes from the supermarket had 25% more Chromium present than the potatoes from the local market. No Chromium was detected in the carrots since the concentrations were less than 0.01mg/kg, the detection limit on the instrument used.
The Potatoes from the supermarket had 1.5% more Cu present than the potatoes from the local market.
No Cu was detected in the carrots since the concentrations were less than 0.01mg/kg, since that was the detection limit on the instrument used.
The Potatoes from the supermarket had 28% more Al present than the potatoes from the local market.
•No Al was detected in the carrots since the concentrations were less than 0.01mg/kg, the detection limit on the instrument used.
The Potatoes from the supermarket had 62% more Ni present than the potatoes from the local market. No Ni was detected in the carrots since the concentrations were less than 0.01mg/kg, the detection limit on the instrument used.
Pesticides Detection
Of the 138 different pesticides only 6 were detected. In general the produce from the local market was less contaminated than the produce from the supermarket. One striking result: the strawberries from the supermarket which showed the concentration of Iprodine, a pesticide, at 330 times higher than the strawberries from the local market.
Click on the picture to see a bigger version
Coliform Exposure
This picture shows a sample result of the coliform detection kit. You can tell that the sample is contaminated because of the yellow color the water has taken on. Also, you can tell by the formation of Carbon Dioxide bubbles on top of the sample. All the samples tested by the team ended up having contamination. Though coliform by itself is not harmful, it is a warning that there may be other contaminants in the sample.
Vitamin Content
The Spinach from the supermarket had 2% more vitamin C than the sample from the local market.
The Strawberries from the supermarket had 8% more vitamin C than the sample from the local market.
No vitamin A or E detected in the samples since the concentration of these vitamins is less than 5mg/100g, which is the detection limit of the instrument used.