Tetraphasic polar organic chemical integrative sampler for the determination of a wide polarity range organic pollutants in water. The use of performance reference compounds and in-situ calibration

1. Iparraguirre, A.
2. Prieto, A.
3. Vallejo, A.
4. Moeder, M.
5. Zuloaga, O.
6. Etxebarria, N.
7. Paschke, A.