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News — lead

Square wave anodic stripping voltammetry and metal testing

electrochemistry lead potentiostat rodeostat

Square wave anodic stripping voltammetry and metal testing

The Rodeostat python library has several electrochemistry programs currently implemented including cyclic voltammetry, constant voltage, linear sweep, chronoamperometry and more. We have recently added a square wave anodic stripping voltammetry (SWASV) program to the library. Stripping voltammetry is a powerful electroanalytical technique for the detection of trace metals in the ppb range (more about this below). In this blog post we use SWASV with the Rodeostat potentiostat to measure lead using a commercial bismuth screen printed electrode. Bismuth has gained alot of attention as a suitable non-toxic replacement for mercury electrodes (hanging-drop or thin film electrodes). Bismuth can form alloys with many metals. Lead, zinc and...

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Testing a lead colorimetric assay

colorimeter lead

Testing a lead colorimetric assay

In this blog post we describe our initial testing of a colorimetric kit for measuring lead in drinking water. In 2015, a Virginia Tech research team found that over 40% of the homes in Flint, MI had elevated lead water levels with 25% of homes well above the EPA 15 ppb maximum contamination level. The levels of lead in drinking water should be zero or undetectable. The Flint water crisis was widely reported in the news and lead contamination of drinking water is still an ongoing public concern. The goal of this project was to find an affordable and easy-to-use lead test for measuring lead in...

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