Choi K L, Que Hee S S, Sutherland R G
J Environ Sci Health B. 1976;11(2):175-83. doi: 10.1080/03601237609372033.
2,4-D levels in the South Saskatchewan River near Saskatoon in 1973 at the height of the spraying season, and at harvestime, were determined by a method involving direct glc analysis, ankaline hydrolysis, followed by n-butylation of the liberated free acid after acidification of the alkaline solution, and confirmed by subsequent n-octylation. GC/MS also confirmed the presence of 2,4-D. 2,4-D was detected during the spraying season but not at harvest time or in river mud samples. The average level was ca. 2mug of acid equivalent to 2,4-D per liter of river water at the height of the spraying season.
1973年喷洒季节高峰期以及收获期时，萨斯卡通附近南萨斯喀彻温河中的2,4-滴水平，通过一种方法来测定，该方法包括直接气相色谱分析、碱性水解，然后在碱性溶液酸化后对释放出的游离酸进行正丁基化，并通过随后的正辛基化加以确认。气相色谱/质谱联用仪也证实了2,4-滴的存在。在喷洒季节检测到了2,4-滴，但在收获期或河泥样本中未检测到。喷洒季节高峰期时，每升河水中2,4-滴酸当量的平均水平约为2微克。
