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Ted Mooney, P.E. RET
Pine Beach, NJ
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Quantitative analysis of Zinc and Iron impurities in Trivalent Passivation Solution
January 4, 2011
Trivalent Chromate passivation is regularly monitored for percentage of the trivalent solution and pH.But impurities like Zinc and Iron which adversely affect the performance of the coating are not monitored.Any suggestion for an accurate and cost-effective method (other than AAS) for the quantitative analysis of the above impurities in the passivation bath?
S.Ramajayam
Subramanian Ramajayam
consultant - Bangalore, India
I do not think that you will be happy with results you obtain from methods that are simpler than AAS. If an AAS is way out of the budget, the next best option is to send your sample to an outside lab.
Jon Barrows, MSF, EHSSC
GOAD Company
Independence, Missouri
January 7, 2011
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