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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Fakes on April 02, 2015, 07:12:54 AM

Title: Sodium in adblue
Post by: Fakes on April 02, 2015, 07:12:54 AM

I have a problem with sodium in Adblue (30% urea-70% water). Specification for sodium is 0,5 ppm and the ICP analysis finds from 3 to 10 ppm. I am thinking that the problem is in the water, if somebody can help...

Title: Re: Sodium in adblue
Post by: Hunter2 on April 02, 2015, 07:14:51 AM

What is your blind value without adblue in the water.

Title: Re: Sodium in adblue
Post by: Fakes on April 02, 2015, 07:20:04 AM

Unfortunately i measure the Adblue when it is received by the consumer. It comes in plastic containers (contain 1 ton AdblUe) and is transported to buses' tanks through metal pumps.

Title: Re: Sodium in adblue
Post by: Fakes on April 02, 2015, 07:22:46 AM

What also worries me is that these boxes are in open space and i don't know if rain water enters.

Title: Re: Sodium in adblue
Post by: Hunter2 on April 02, 2015, 07:44:48 AM

Well, rain water should be sodium free. It will contain probably carbon dioxide or sulfur dioxide according the environment.  But any mineral water or tap water will contain some ions. I would recommend to get a sample directly after manufactering  and compare.

Title: Re: Sodium in adblue
Post by: Fakes on April 02, 2015, 11:35:08 AM

Thank you