Determination of Trace Level Lead (Pb) in Drinking Water Using Mercury Free Electrode and Portable Instrument According to Requirement of USEPA Lead and Copper Rule

Drinking Water
Poster Presentation

Prepared by J. Gandhi, B. Zumbrägel
Metrohm USA, 1455 E.Sam Houston Pkwy South, Ste 170, Pasadena, TX, 77503, United States

Contact Information: [email protected]; 713-202-8363


Lead (Pb) is well known to be highly toxic to humans as it interferes with enzyme reactions. Lead is rarely found in significant quantities in water sample of natural origin, for examples from ground or surface water. Lead contaminations of drinking water are usually released from drinking water pipes or domestic water installations. Lead contaminations can result in chronic lead poisoning. The EPA Lead and Copper Rule (LCR) from 1991 defines a Maximum Contaminant Level Goal (MCGL) of zero to prevent any negative health effect. The action level is for lead is 15 µg/L.
In this poster presentation, a new Mercury free electrode method using Portable Analyzer will be presented which allows the easy and straightforward monitoring of the Lead (Pb) as per EPA lead action level directly at the place of sampling. A portable voltammetric analyzer is used in combination with a gold microwire electrode as sensor. Also, we will demonstrate the precision and accuracy data.