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Kawata, K.; Ibaraki, T.; Tanabe, A.; Yagoh, H.; Shinoda, A.; Suzuki, H.; Yasuhara, A., Gas chromatographic-mass spectrometric determination of hydrophilic compounds in environmental water by solid-phase extraction with activated carbon fiber felt, J. Chromatogr. A, 2001, 911, 1, 75-83, https://doi.org/10.1016/S0021-9673(00)01252-8 . [all data]