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1 liter = 1000 mL  1000 g

1 liter = 1000 mL  1000 g. 10 g. 1 g. 0.001g = 1 mg. 0.001 g = 1 mg = 1 ppm 1,000 g 1,000,000 mg 1 ppb = 1 μg

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1 liter = 1000 mL  1000 g

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  1. 1 liter = 1000 mL  1000 g 10 g 1 g 0.001g = 1 mg

  2. 0.001 g = 1 mg = 1 ppm 1,000 g 1,000,000 mg 1 ppb = 1 μg 1,000,000,000 μg 1 ppt = 1 ng 1,000,000,000,000 ng 1 ppq = 1 pg 1,000,000,000,000,000 pg

  3. 1 pg = 1/1,000,000,000 OF THIS SINGLE CRYSTAL !

  4. 1 ppm = 1 sec in 11.6 days 1 ppb = 1 sec in 31.7 years 1 ppt = 1 sec in 31,700 years 1 ppq = 1 sec in 31,700,000 years

  5. City of Portland ICP-MS Method Reporting Levels

  6. Use Poly-Propylene Tubes for Digestion and Storage

  7. Analyst Clean Techniques • 1.   Pre-rinsing of sample tubes: I rinse all of my “Falcon” tubes with 1.5-2.5ml of Trace metal grade nitric acid. Then rinse 3-4 times with DI water. • 2.   Digestion Vessels: rinse 2-3 times with an aliquot of acid preserved sample. • 3. Double Pipetting: The first draw of acid should be sent to a waste bottle. • 4.   Blank prepared first: When dispensing the acid place in the blank first. That way if there is any contamination on the pipet tip it will show up in the blank. • 5.   Sample Analysis: Only uncap what the instrument can do in a 30-40 minute period. This reduces the chance of possible air borne contamination.

  8. VWR Pre-cleaned Sample Bottles

  9. Laminar Flow Hood

  10. Hot Block Digester

  11. Quiescent Distillation of Acid & Water

  12. Dissolved Metals Set-up

  13. Replace Latex with Tygon Tubing

  14. Auto-Sampler Cover from Tap Platics

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