Characteristics, Distribution, and Source Analysis of the Main Persistent Toxic Substances in Karst Groundwater at Jinan in North China

Table 2

Detection limits of the organic compounds.

No.	Organic compounds	Detection limits (μg/L)
1	Trichloromethane	0.1
2	Carbon tetrachloride	0.1
3	1,1,1-Trichloroethane	0.1
4	Trichloroethylene	0.1
5	Tetrachloroethylene	0.1
6	Dichloromethane	0.2
7	1,2-Dichloroethane	0.2
8	1,1,2-Trichloroethane	0.1
9	1,2-Dichloropropane	0.2
10	Bromoform	0.2
11	Vinyl chloride	0.1
12	1,1-Dichloroethylene	0.1
13	cis-1,2-Dichloroethylene	0.1
14	Chlorine benzene	0.1
15	Phthalates	0.1
16	Dichlorobenzene	0.1
17	Benzene	0.2
18	Toluene	0.1
19	Ethylbenzene	0.1
20	Ditoluene	0.2
21	Styrene	0.1
22	Total BHC	0.01
23	γ-BHC (lindane)	0.01
24	Total DDT	0.002
25	Hexachlorobenzene	0.01
26	Benzo(a) pyrene	0.002