“…Four model PAHs solutions were used at 50% of their water solubility at 20°C: 66 μg L −1 for anthracene, 1,998 μg L −1 for fluorene, 1,283 μg L −1 for phenanthrene, and 146 μg L −1 for pyrene (Rumble et al 2001). PAHs were measured after 5-, 10-, 20-, 30-, 40-, and 50-min extraction times, at 20°C, using the general procedure referred to under Section 2.2.…”