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USGS EXTERNAL QA REPORT 2012

USGS EXTERNAL QA REPORT 2012. CO02 / 02CO. MDN Interlab, 2 samples / month. HAL / FGS, Inc., USA North Shore Analytical, Inc., USA USGS, Wisc. Hg Lab, USA Flett Research, Ltd. – Manitoba, Canada Lab Env. Testing (EC) – Quebec, Canada VITO – Belgium IVL – Sweden

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USGS EXTERNAL QA REPORT 2012

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  1. USGS EXTERNAL QA REPORT2012 CO02 / 02CO

  2. MDN Interlab, 2 samples / month HAL / FGS, Inc., USA North Shore Analytical, Inc., USA USGS, Wisc. Hg Lab, USA Flett Research, Ltd. – Manitoba, Canada Lab Env. Testing (EC) – Quebec, Canada VITO – Belgium IVL – Sweden Dept. Atmos. Sci. National Central Univ. – Taiwan Jozef Stefan Int. Post-grad School – Slovenia Chinese Academy of Sciences – China Umweltbundesamt / Fed. Env. Agency - Germany GMOS

  3. NO Changes to MDN Interlab Program in 2012 • Did NOT add 3 more GMOS labs. • Italy lab could not figure out how to pay for shipping. • France lab did not show interest • South African lab did not respond • Samples shipped to China keep breaking or leaking from freezing!

  4. 2012 3.0 CONTROL = +3 f-psig 1.5 WARNING = +2f-psig 0.0 Hg CONCENTRATION DIFFERENCE, ng/L -1.5 -3.0 JAN JUN DEC

  5. 2012 MDN BLANKS 5 4 3 2 1 0 LABORATORIES

  6. MDN Summary • Three-year moving mercury maximum contamination mass in MDN samples is consistently 0.2—0.3 nanograms per sample. • HAL’s high performance is consistent with previous years, with slight negative bias (~1 ng/L) compared to median concentrations reported from 11 laboratories. • In June and July, a positive bias was observed in HAL results for the first time in many years. No effect on trends.

  7. CAL 2012 CONTROL CHARTS pH 0.3 NH4+ 0 CONCENTRATION DIFFERENCE, mg / L -0.3

  8. CAL 2012 CONTROL CHARTS Na+ Ca+2 Mg+2 K+

  9. CAL 2012 CONTROL CHARTS NO3- SO4-2 Cl- Br-

  10. 2012 SAMPLES OUT OF STATISTICAL CONTROL

  11. 2012 BLANKS 4 samples / Lab / Year

  12. New PCQA Web Site YEAR TYPE OUTPUT .pdf ANALYTE LAB

  13. New PCQA Web Site

  14. NEW NTN Interlaboratory Participant! • U.S. Forest Service, • Northern Research Station, • Durham, New Hampshire • Contact: Jeff Merriam

  15. 2012 Field Audit 2010-12 Network Maximum Contamination Levels & Ptiles

  16. FIELD AUDIT H-ION CONTAMINATION

  17. FIELD AUDIT H-ION LOSS

  18. CA76 / 76CA

  19. CAN5 / CAN6

  20. CO98 / CO89

  21. 2 Co-located Noah-IV Gages

  22. 2 Co-located Noah-IV Gages

  23. 2 Co-located OTT Pluvio2 Gages

  24. 2012 Co-located Results

  25. 2012 Co-located Results

  26. 2012 Co-located Results

  27. 2012 Co-located Results

  28. 2012 Co-located Results

  29. 2012 Co-located Results

  30. 2012 Co-located Results

  31. 2012 Co-located Results

  32. 2012 Co-located Results

  33. 2012 Co-located Results

  34. 2012 Co-located Results

  35. 2012 Co-located Results

  36. 2012 Co-located Results

  37. 2012 Co-located Results

  38. 2012 Co-located Results

  39. 2012 Co-located Results

  40. 2012 Co-located Sampler Program Conclusions • N-CON typically caught more precipitation than ACM • Volume differences not related to concentration • differences • 3. N-CON concentations tend to be higher, but not always, • especially for K, Mg, H-ion • 4. N-CON > concentrations seem to be related to opening • earlier than ACM & catching early onset washout • …but not always

  41. CO00 / 00CO

  42. CO13 / 13CO

  43. NTN Summary • CAL’s high performance is consistent with previous years. (Possibly more variability in Na+, SO42-, and pH than previously observed.) • Three-year moving Network Maximum Contamination Levels in NTN samples is same or lower than recent past years. • Maximum NO3- and NH4+ losses are lower than recent past years, but H+ loss is increasing.

  44. Study 1. Sample Evaporation in NTN Collector Study 2. MDN Sample Loss Study Study 3. Mercury Adsorption in MDN Sample Trains Study 4. Sensitivity of NTN and MDN Collector Sensors Study 5. Catch Efficiency of NTN Collector with Wind Shield

  45. 2014 NADP spring meeting in Belize

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