Storage of Soil Samples. The concentration of benzene (ug/g) in soil was measured after being stored in sealed glass ampules for different times, as shown in the data below. Quantities given are average ± standard deviation, based on n = 3. Do the results indicate that storage time must be limited to avoid biodegradation? Day 0 6.1 ± 0.7 Day 5 5.9±0.2 Day 11 6.2±0.2 Day 20 5.7±0.2

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Storage of Soil Samples. The concentration of benzene (ug/g) in soil was measured after
being stored in sealed glass ampules for different times, as shown in the data below. Quantities
given are average ± standard deviation, based on n = 3. Do the results indicate that storage
time must be limited to avoid biodegradation?
Day 0
6.1 ± 0.7
Day 5
5.9±0.2
Day 11
6.2±0.2
Day 20
5.7±0.2
Transcribed Image Text:Storage of Soil Samples. The concentration of benzene (ug/g) in soil was measured after being stored in sealed glass ampules for different times, as shown in the data below. Quantities given are average ± standard deviation, based on n = 3. Do the results indicate that storage time must be limited to avoid biodegradation? Day 0 6.1 ± 0.7 Day 5 5.9±0.2 Day 11 6.2±0.2 Day 20 5.7±0.2
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