Patricia A. Muoio Chief National Information Assurance Research Lab.
Quality Assurance in the Metals Lab
-
Upload
ryan-brennan -
Category
Documents
-
view
233 -
download
2
Transcript of Quality Assurance in the Metals Lab
![Page 1: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/1.jpg)
QUALITY ASSURANCE IN THE METALS LABORATORY
![Page 2: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/2.jpg)
FACTORS YIELDING HIGH QUALITY
Control all parameters Ruggedize system Regular maintenance
![Page 3: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/3.jpg)
SAMPLE INTRODUCTION SYSTEM
![Page 4: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/4.jpg)
CONTROLLING UPTAKE RATE%
EFFI
CIE
NC
Y
0
10
20
30
40
50
60
0.03 0.11 0.27 0.5 0.61 1.4 2.1
UPTAKE RATE (ML/MIN)
Transport Efficiency vs. Uptake
![Page 5: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/5.jpg)
CONTROLLING UPTAKE RATE
Worn pump tubing?
Worn pump rollers?
Improperly adjusted pump tension?
Clogged nebulizer? Kinked sample capillary?
Real-Time Sample Flow Measurement
![Page 6: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/6.jpg)
How it works: Thermal Flow Measurement
Flow Rate is related to (TempA – TempB)
Heater
Temp. Sensor B
sample
Temp. Sensor A
CONTROLLING UPTAKE RATE
![Page 7: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/7.jpg)
Features of TruFlo:
Adjustable damping
Settable alarm limits
Digital display
Recordable graph
Range: 0 to 4mL/min
CONTROLLING UPTAKE RATE
![Page 8: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/8.jpg)
CONTROLLING TEMPERATURE
Standard glass cyclonic Twister spray chamber; e.g. KT-1013
Quartz cyclonic Twister spray chamber; e.g. KT-1013Q
High purity PFA cyclonic spray chamber; e.g. KT-1013P
Low volume Twinnabar spray chamber; e.g. KT-1013T
Glass, quartz and PFA spray chambers are interchangeable
IsoMist Configurations:
![Page 9: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/9.jpg)
CONTROLLING TEMPERATURE
0.91
1.11.21.31.41.51.61.71.81.9
22.12.2
10C 15C 20C 25C 30C 35C
ISOMIST TEMPERATURE
Nor
mal
ised
em
issi
on s
igna
l
Al 396.153As 193.696Ca 317.933Cd 214.440Cr 267.716Cu 327.393Fe 238.204Mg 285.213Mg 280.271Mn 257.610P 178.221Pb 220.353Se 196.026Si 251.611Ti 334.940Zn 202.548Zn 206.200Zn 213.857
Intensity vs. Temperature (1ml/min uptake)
![Page 10: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/10.jpg)
Higher accuracy
Higher productivity
Greater reproducibility
Better experiments
CONTROLLING TEMPERATURE
![Page 11: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/11.jpg)
CONTROLLING TEMPERATUREAv
erag
e In
tens
ity (c
ps)
Temperature (˚C)
Ir 212 Pt 214 Ru 240 Au 242 Pd 340 Rh 343
110000
90000
70000
50000
3000045403530252015105
ENHANCED SENSITIVITY FOR PRECIOUS METALS
![Page 12: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/12.jpg)
CONTROLLING TEMPERATURE
Pt 214
Pt 265
Pt Gravimetric ValuePerc
ent P
latin
um (%
)
Temperature (˚C)
16.0
15.9
15.8
15.7
15.6
4540353025201515.5
IMPROVED ACCURACY FOR PRECIOUS METALS
![Page 13: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/13.jpg)
CONTROLLING INTERFERENCES
ICP-MS
Ionization
Space-charge
Suppression
ICP-OES
EIE
Suppression
Noise
Internal Standardization:
Trident Internal Standard Kit
Modular construction Zero dead-volume
connections
Built-in mixing chamber
![Page 14: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/14.jpg)
SeaSpray nebulizer
Twister spray chamber Argon Humidifier
Ceramic outer tube
DEALING WITH HIGH TDS
![Page 15: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/15.jpg)
IMPROVED STABILITYFully Ceramic D-Torch – Less Maintenance & Improved Stability with High TDS
Glass Expansion October 2013 Newsletter, “How to Achieve High Accuracy with Difficult Samples.”
![Page 16: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/16.jpg)
ENHANCE DAY-TO-DAY REPRODUCIBILTY
Re-usable inline filter.
Nebulizer cleaning tool.
Black flushing adapter.
Real-Time sample monitor.
QA Kit: P/N KT-1136
![Page 17: Quality Assurance in the Metals Lab](https://reader034.fdocuments.net/reader034/viewer/2022042820/55d0c4c8bb61eb05468b47d2/html5/thumbnails/17.jpg)
QC SUMMARY
Control sample uptake
Control spray chamber temperature
Control interferences
Control down-time