. 1998 Dec;64(12):4924–4929. doi: 10.1128/aem.64.12.4924-4929.1998

TABLE 1.

Maximal depletion rates of and maximal ¹⁴CO₂ evolution rates from BTX compounds added to soil individually or in mixtures

Addition(s)^a	Maximal rate (days)^b
	Benzene		Toluene		o-Xylene		p-Xylene
	Depletion	¹⁴CO₂ evol.	Depletion	¹⁴CO₂ evol.	Depletion	¹⁴CO₂ evol.	Depletion	¹⁴CO₂ evol.
Benzene	4.7 (7–10)	8.0 (7–10)
Toluene			4.0 (0–7)	7.0 (0–7)
o-Xylene					4.3 (4–7)	9.0 (4–7)
p-Xylene							3.6 (5–11)	6.1 (5–11)
B^*Tp-X	3.5 (7–10)	7.8 (7–10)	2.4 (7–10)
BT^*o-X	2.2 (4–7)		2.8 (4–7)	6.0 (4–7)	1.4 (4–7)		ND
BTo-X^*	1.9 (4–7)		2.1 (4–7)		1.6 (4–7)	7.6 (7–11)
BTp-X^*	3.3 (5–8)		2.5 (5–8)				2.5 (5–8)	3.0 (8–12)

Individual compounds were added at 3 μl · g of soil⁻¹; three-component mixtures were added at 1 μl · g of soil⁻¹ each (3 μl · g⁻¹ total). In mixtures, only the component followed by an asterisk was radiolabeled. Abbreviations: BTp-X, benzene, toluene, and p-xylene; BTo-X, benzene, toluene, and o-xylene.

Depletion rates expressed in micromoles per gram of soil per day and ¹⁴CO₂ evolution (evol.) expressed in percent total radiolabel added. The numbers in parentheses give the time span (in days) when the specified maximal rate prevailed. ND, not determined.