This study evaluated the emission reduction of hexavalent chromium , nickel, manganese and other metals generated during welding operations while using pulsed power inverter (PPI) technology. Particle size distribution and metal sp4ecies differentiation within each particle size was examined using gravimetric and laboratory analyses. Emissions from ozone, carbon monoxide and nitrogen oxides were evaluated using real-time monitoring. Emissions for operations using PPI technology were compared with welding processes, typically mild ...
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