×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

How to characterize high purity material ?

How to characterize high purity material ?

How to characterize high purity material ?

(OP)
Hi all,

I would like to know, what type of method can be used to determine the characteristics of high purity material.

I want to determine the chemical ingredients of high purity aluminum.
Aluminum content is as high as 99.999.

RE: How to characterize high purity material ?

For chemical composition use the ICP-OES method - Inductively coupled plasma - optical emission spectroscopy

RE: How to characterize high purity material ?

You may also consider AAS method to determine trace elements present.


"Even,if you are a minority of one, truth is the truth."

Mahatma Gandhi.

RE: How to characterize high purity material ?

Contact your material supplier and ask them for a copy of the material certification that the aluminum manufacturer has on file for this particular order of aluminum. The material certification should list the trace element content.

Maui

RE: How to characterize high purity material ?

The MTR should also tell you how they did the analysis for each element.
For most elements you will be looking at 20ppm and less, for some you will need to be able to detect amounts of 10ppb. It will take four or five different analysis methods.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

RE: How to characterize high purity material ?

(OP)
I am in doubt of usefullnes of OES method, since I need to look for the elements where they may exist in the material at ppm levels.

@Maui
They have sent us a ICP OES analysis of the material. But we have to justify the results in more certain way. I don't trust ICP OES method at this level of purity.

@EdStainless

What is MTR ?

RE: How to characterize high purity material ?

The ICP-OES is one of the best methods for detection of impurity levels in the ppm range. Another option you have is ICP-MS for even lower detection limits.

RE: How to characterize high purity material ?

The material test report. There are reports from NASA on ultra-pure metals, you could see that they used.
I would second ICP-MS. Mass spec is an absolute technique since you are counting atoms.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources