Sample Preparation
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lithium formula
How do you make lithium formula descriptions?
Created: 05/27/21 13:54:22
Created By: "Gaven Rank"
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2 | 7802 |
lithium formula
How do you make lithium formula descriptions?
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Chromium Oxidation State
Hello,
I am analyzing a powder for % Cr. The sample is a very dark purple powder, I add HNO3 and HCl and let it sit for an hour to dissolve. I then bring it up to a final weight (final matrix is 2.5% HNO3, 5% HCl). When I am diluting to the final weight the sample is green, indicating Cr is in the 3+ oxidation state. My working and stock standard samples are orange (Cr 6+). Is this ok? I have heard Cr has slow kinetics, how do I know all the Cr is in solution and I will get accurate % Cr for my samples?
Thank you,
Created: 02/04/21 16:25:12
Created By: "Jeff Povelones"
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15 | 7205 |
Chromium Oxidation State
Hello,
I am analyzing a powder for % Cr. The sample is a very dark purple powder, I add HNO3 and HCl and let it sit for an hour to dissolve. I then bring it up to a final weight (final matrix is 2.5% HNO3, 5% HCl). When I am diluting to the final weight the sample is green, indicating Cr is in the 3+ oxidation state. My working and stock standard samples are orange (Cr 6+). Is this ok? I have heard Cr has slow kinetics, how do I know all the Cr is in solution and I will get accurate % Cr for my samples?
Thank you,
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Standards
do you have any standard for the total suspended solid test?
Created: 12/17/20 11:01:55
Created By: "chathurika de silva"
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5 | 3197 |
Standards
do you have any standard for the total suspended solid test?
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Use of HF in Hot block digestion
Can we use HF acid for hot block digestion. we need to develop method to determine total silica and other alkali in soil samples.
Created: 11/26/20 03:24:13
Created By: "rumesh dissanayake"
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1 | 2489 |
Use of HF in Hot block digestion
Can we use HF acid for hot block digestion. we need to develop method to determine total silica and other alkali in soil samples.
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Digestion or leaching of Molecular sieve for lead analysis
Can you help me with digestion or leaching of molecular sieve to extract lead from it.
lead analysis will be done by ICPMS.
Thank you
Ramakrishna B
Created: 10/19/20 10:57:15
Created By: "Ramakrishna Battula"
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1 | 2916 |
Digestion or leaching of Molecular sieve for lead analysis
Can you help me with digestion or leaching of molecular sieve to extract lead from it.
lead analysis will be done by ICPMS.
Thank you
Ramakrishna B
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Dissolving Rh with Sodium Perchlorate
I recently asked a question about dissolving Rh and now want to try one of the methods with sodium perchlorate. The bottle i have says to store and handle under inert gas and this wasn't mentioned in the method. Can you give me anymore information about moving forward with this procedure?
I am wanting to dissolve a 1 gram sample. How much HCL and how much Sodium Perchlorate should be added?
Created: 02/06/20 12:16:00
Created By: "Bill Burtner"
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2 | 8583 |
Dissolving Rh with Sodium Perchlorate
I recently asked a question about dissolving Rh and now want to try one of the methods with sodium perchlorate. The bottle i have says to store and handle under inert gas and this wasn't mentioned in the method. Can you give me anymore information about moving forward with this procedure?
I am wanting to dissolve a 1 gram sample. How much HCL and how much Sodium Perchlorate should be added?
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Rh
What is the best way to digest pure rhodium?
Created: 01/24/20 08:20:07
Created By: "Bill Burtner"
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3 | 2873 |
Rh
What is the best way to digest pure rhodium?
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Sample preparation of cement using fused bead for ICP
in ur application XRF VS ICP for concrete metals u have given a sample preparation using fused bead and then dissolving in Dilute nitric acid, i wanted to know whether the sample dissolves completely in the dil nitric acid or do you get some insoluble for that and then u filter to inject in ICP ?
Created: 11/13/19 04:09:46
Created By: "Lucia Braganza"
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1 | 1668 |
Sample preparation of cement using fused bead for ICP
in ur application XRF VS ICP for concrete metals u have given a sample preparation using fused bead and then dissolving in Dilute nitric acid, i wanted to know whether the sample dissolves completely in the dil nitric acid or do you get some insoluble for that and then u filter to inject in ICP ?
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