{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

03.22.10 - March22nd : :As,Cd,Cr,Cu....

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
March 22 nd Water-borne toxic chemicals Growing concern world-wide: collision between agriculture and the water. Heavy metals of concern: As, Cd, Cr, Cu... all associated with human toxicity levels. Arsenic: natural contamination of aquifers, orchards (used to be used as a pesticide). Linked to  bladder, kidney, skin, nasal passages, liver and prostate cancers. And it is a neurotoxin.  Standard for drinking water: 0.010 ppm but the goal is 0. Acute poisoning is lethal over a period  of days to weeks (depending on dose), but also used in medicine. Arsenic V looks similar to  phosphorus and decreases ATP or can be metabolized to Arsenic III, which is then methylated  to facilitate excretion. Problem in drinking water world-wide. Bangladesh has high endogenous  levels of Arsenic in aquifers. “didn’t know” and 85 million people are infect/at risk because of  their drinking water. Alternative to using aquifer – treating surface water (expensive). Rice can 
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern