Variables: dissolved_oygen pH electric_conductivity Keywords: high resolution mass spectrometry pesticides metabolites Systems: groundwater Substances: 1-3-Dimethyl-2-imidazolidinon (CYSGHNMQYZDMIA-UHFFFAOYSA-N) 1-Propanesulfonate (KCXFHTAICRTXLI-UHFFFAOYSA-N)