Application Note: Chromate in Drinking Water by Ion Chromatography with PCR and UV/VIS Detection According to EPA Method 218.7
5 November 2013

Hexavalent chromium (chromate) is known to be cancerogenic if inhaled and suspected to be cancerogenic if ingested. EPA Method 218.7 allows to determine chromate in drinking water down to the sub-μg/L range (method detection limit, MDL = 15 ng/L). Post-column reaction with 1,5-diphenylcarbazide and subsequent visible detection at 530 nm is applied.

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