Table 4: Molar concentrations (nM) of neonics in sampled surface river water.

Neonics	Molecular Mass	Average Mass per dm3 of Water (Unit: μg/dm3)	Average Molar Concentration (unit: nM)
Thiacloprid	252.72	0.06	0.24
Acetamiprid	222.67	0.08	0.36
Thiamethoxam	291.71	0.09	0.31
-	-	Total = 0.23 μg/dm3 (i.e., 230 ng/dm3)	Total = 0.91 nM (i.e., 9.1 x 10-4 nmol/g H2O)