Variables: total_organic_carbon pH electric_conductivity Keywords: micropollutants high resolution mass spectrometry land use Substances: 1-3-Dimethyl-2-imidazolidinon (CYSGHNMQYZDMIA-UHFFFAOYSA-N) 1-Propanesulfonate (KCXFHTAICRTXLI-UHFFFAOYSA-N)