Example: stock market
Solutions For Plasma Ashing
Found 2 free book(s)
ELEMENTS by ICP 7303 (Hot Block/HCl/HNO3 Digestion)
www.cdc.govAshing): METHOD 7303, Issue 1, dated 15 March 2003 - Page 2 of 6 NIOSH Manual of Analytical Methods (NMAM), Fourth Edition REAGENTS: 1. Hydrochloric acid,* conc., ultra pure. 2. Nitric acid,* conc., ultra pure. 3. Calibration stock solutions, 50-1000 :g/mL. Commercially available single element solutions or multielement solutions prepared
ELEMENTS by ICP 7301 (Aqua Regia Ashing)
www.cdc.gov6. Add 2 mL ashing acid and repeat step 5. Rep eat this step until the solution is clear. NOTE: PVC filters will not completely dissolve after repeated additions of ashing acid. 7. Remove watchglass and rinse into the beake r with distilled water. 8. Increase the tem perature to 150 °C and take the sample to near dryness (ca. 0.5 m L). 9.