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View Diary: Study: 30 Toxic Chemicals at High Levels at Exxon Arkansas Tar Sands Pipeline Spill Site (8 comments)

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  •  Basically, oil fumes. (1+ / 0-)
    Recommended by:
    Deward Hastings
    The chemicals found in the samples include benzene, toluene, ethylbenzene, n-hexane, and xylenes
    These are all naturally occurring heavier components of oil.
    •  or gasoline fumes (0+ / 0-)

      The "smell" of gasoline comes, at least in part, from n-hexane, which is widely used in food processing (extracting soy oil, for example) as well.  It's a good solvent for making hash oil.  These are all volatile compounds, which will not be present beyond normal background levels much past the time it takes a cup of spilled gasoline to evaporate.  To suggest that its presence in low concentrations in the air for a few weeks means that "quality of life has been changed forever" is simply nonsense.

      Fake Left, Drive Right . . . not my idea of a Democrat . . .

      by Deward Hastings on Tue Apr 30, 2013 at 01:00:03 PM PDT

      [ Parent ]

      •  Easy for you to say (0+ / 0-)
        Benzene vapors in the Mayflower sample were measured at 220 parts per billion by volume (ppbV), exceeding the Texas short-term effects screening levels (ESL) for benzene of 54 parts per billion (ppb) by four times. Many residents were exposed for several days and are still being exposed to crude remaining in the environment.
        My emphasis.
        From cotterperson's link: http://www.gcmonitor.org/...
        •  easy indeed (1+ / 0-)
          Recommended by:
          marina

          I used benzene as a solvent 50 years ago in chem lab, and it was always present in the straight-run gasoline (and kerosene) that was a common part of every young man's "playing with cars" experience back then (same with n-hexane, only moreso).  We literally "washed up" with it.  Both were common industrial solvents (and found in some household cleaning products as well).

          n-hexane "smells like gasoline" (or at least like gasoline used to) and benzene has a rather pleasant "sweet" smell.  Knowing that (from experience) won't kill you.

          Fake Left, Drive Right . . . not my idea of a Democrat . . .

          by Deward Hastings on Wed May 01, 2013 at 06:30:57 AM PDT

          [ Parent ]

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