Rapid Analysis of Eukaryotic Bioluminescence to Assess Potential Groundwater Contamination Events

Table 1

Concentrations of selected endogenous groundwater constituents and exogenous chemicals and their effects on P. lunula bioluminescence after a 24-h exposure.

(a)

Endogenous compounds
Arsenic		Barium		Selenium		Strontium
Concentration (mg/L)	Percent inhibition	Concentration (mg/L)	Percent inhibition	Concentration (mg/L)	Percent inhibition	Concentration (mg/L)	Percent inhibition
Control	0	Control	0	Control	0	Control	0
5	98	40	13	25	0	4000	62
10	99	60	39	50	0	10000	59
30	98	80	72	100	0	20000	0
50	99	125	100	250	43	25000	0
100	98	250	100	500	74	—	—

(b)

Exogenous compounds
Glutaraldehyde		HCl
Concentration (mg/L)	Percent inhibition	Concentration (mg/L)	Percent inhibition
Control	0	Control	0
0.75	0	25	0
1.5	0	50	0
3	0	100	0
5	47	200	55
7.5	98	300	99