Characterization of Dissolved Organic Matter in River Water by Conventional Methods and Direct Sample Analysis-Time of Flight-Mass Spectrometry

Table 1

Characterization of surface waters of the Bio-Bio River, VIII Region, Chile.

Point	1	2	3
Sector	Rucalhue	Laja	Concepción
Elevation (m)	846	139	144
Coordinates	37° S	37° S	36° S
	72° W	72° W	73° W
(mg·L^−1)		2.88 ± 0.01	4.30 ± 0.71
Conductivity (S·cm^−1)	89.4 (20.6°C)	114.2 (20.5°C)	125.4 (20.5°C)
pH	7.63	7.55	7.56
Suspended solids (g·L^−1)	12.87 ± 0.19	12.88 ± 0.46	9.97 ± 0.33

: organic carbon content; standard deviation.