Figure 5
From: Comparison of stainless and mild steel welding fumes in generation of reactive oxygen species
Mass normalized radical activity, .OH radical peak heights of individual filters sizes adjusted for radicals/mg on 1 hour post generation samples. ESR settings were; center field, 3385 G; scan width, 100 G; time constant, 40 msec; scans, 5; modulation amplitude, 1 G; receiver gain, 2.5 × 104; frequency, 9.793 GHz; and power, 63 mW. Asterisks indicate a significant increase in stainless steel fume compared to mild steel fume (P < 0.05)