Reducing bioavailability and phytotoxicity of 2,4-dinitrotoluene by sorption on K-smectite clay.

نویسندگان

  • Michael G Roberts
  • Clayton L Rugh
  • Hui Li
  • Brian J Teppen
  • Stephen A Boyd
چکیده

Smectite clays demonstrate high affinities for nitroaromatics that strongly depend on the exchangeable cation. The K-smectites have high affinities for nitroaromatics, but Ca-smectites do not. Here we evaluate the ability of K-smectite to attenuate the bioavailability and hence toxicity of 2,4-dinitrotoluene (2,4-DNT) to the aquatic plant duckweed. In the absence of K-smectite, 2,4-DNT was highly toxic to duckweed. Small amounts of K-smectite reduced toxicity substantially, presumably by reducing 2,4-DNT bioavailability via sorption.

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عنوان ژورنال:
  • Environmental toxicology and chemistry

دوره 26 2  شماره 

صفحات  -

تاریخ انتشار 2007