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Chemistry (including Biochemistry)/We are working in small research and need some help

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Question
Dear Dr. Henry Boyter:

We are a chemistry teachers group from Syria
And we are looking forward for your help in some questions.

The questions are:
1.   How can we detection iron and nickel in the botanical oil that’s fit to eating and determining the ratio of each one?
2.   How can we kill urea enzyme that’s inventory in soybean?
3.   How can we decrease the value of COD from the water that’s followed from alimentary factories before draining it?

And thank you for your cooperation and helping us.


Answer
1. ICP or ICP-MS.  Less desirable would be AA.

2. Would need more info.

3. See the references for bulk.  If not bulk, I would need details (volume, COD level, target, chemical content, etc)

http://people.howstuffworks.com/sewer3.htm

http://www.ec.gc.ca/soer-ree/English/soer/MWWE1.cfm

http://www.wef.org/LearnAboutWater/ForEducators/CurriculumMaterials/
(Read 9-12 links)

http://www.college.ucla.edu/webproject/micro7/studentprojects7/Rader/asludge2.ht...

http://ohioline.osu.edu:80/aex-fact/0768.html

http://www.wef.org/LearnAboutWater/ForThePublic/WastewaterTreatment/

http://ga.water.usgs.gov:80/edu/wuww.html

Chemistry (including Biochemistry)

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Dr. Henry Boyter, Jr.

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No homework, biochemistry, or other schoolwork! The question will be rejected. If you have not searched www.google.com, do so before posting. If you are a student, give your grade and course. Everyone, explain the purpose and context for the question.
Experience in the area
Chemistry (non-biochemistry), environmental science, occupational health and safety, environmental regulation and management, environmental engineering, and wastewater engineering. I'm the Director of Environmental, Health, and Safety and the Director of Research at the Institute of Textile Technology.

Experience

Chemistry (non-biochemistry), environmental science, occupational health and safety, environmental regulation and management, environmental engineering, and wastewater engineering. I'm the Director of Environmental, Health, and Safety and the Director of Research at the Institute of Textile Technology.

Education/Credentials
PhD, MS, BS in Chemistry

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