An on-line aerosol laser mass spectrometer with three, easily interchangeable laser based ionisation methods for characterisation of inorganic and aromatic compounds on particles

2006 ◽  
Vol 258 (1-3) ◽  
pp. 86-94 ◽  
Author(s):  
M. Bente ◽  
T. Adam ◽  
T. Ferge ◽  
S. Gallavardin ◽  
M. Sklorz ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Aromatic Compounds ◽  
On Line ◽  
Laser Mass Spectrometer

scholarly journals 14C AMS at Suerc: Improving QA Data with the 5MV Tandem and 250KV SSAMS

Radiocarbon ◽  
2010 ◽  
Vol 52 (2) ◽  
pp. 263-271 ◽  
Author(s):  
P Naysmith ◽  
G T Cook ◽  
S P H T Freeman ◽  
E M Scott ◽  
R Anderson ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Sample Preparation ◽  
Mass Spectrometer ◽  
Random Access ◽  
Capacity Measurement ◽  
Tandem Accelerator ◽  
Standard Data ◽  
Accelerator Mass Spectrometer ◽  
On Line ◽  
Automated Data Acquisition

In 2003, a National Electrostatics Corporation (NEC) 5MV tandem accelerator mass spectrometer was installed at SUERC, providing the radiocarbon laboratory with 14C measurements to 4–5‰ repeatability. In 2007, a 250kV single-stage accelerator mass spectrometer (SSAMS) was added to provide additional 14C capability and is now the preferred system for 14C analysis. Changes to the technology and to our operations are evident in our copious quality assurance data: typically, we now use the 134-position MC-SNICS source, which is filled to capacity. Measurement of standards shows that spectrometer running without the complication of on-line δ13C evaluation is a good operational compromise. Currently, 3‰ 14C/13C measurements are routinely achieved for samples up to nearly 3 half-lives old by consistent sample preparation and an automated data acquisition algorithm with sample random access for measurement repeats. Background and known-age standard data are presented for the period 2003–2008 for the 5MV system and 2007–2008 for the SSAMS, to demonstrate the improvements in data quality.

Initial development of single particle laser mass spectrometer

2005 ◽  
Author(s):  
L. Fang ◽  
Y. Zhu ◽  
H. Y. Zheng ◽  
X. Y. Guo ◽  
W. W. Zhao ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Single Particle ◽  
Initial Development ◽  
Laser Mass Spectrometer

The Analysis of Coal with the Laser Mass Spectrometer

1970 ◽  
pp. 29-36 ◽  
Author(s):  
F. J. Vastola ◽  
A. J. Pirone ◽  
P. H. Given ◽  
R. R. Dutcher
Keyword(s):  
Mass Spectrometer ◽  
Laser Mass Spectrometer

On-line analysis by capillary separations interfaced to an ion trap storage/reflectron time-of-flight mass spectrometer

1998 ◽  
Vol 794 (1-2) ◽  
pp. 377-389 ◽  
Author(s):  
Jing-Tao Wu ◽  
Mark G Qian ◽  
Michael X Li ◽  
Kefei Zheng ◽  
Peiqing Huang ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Ion Trap ◽  
Time Of Flight ◽  
Flight Mass Spectrometer ◽  
On Line ◽  
Capillary Separations ◽  
Line Analysis

Breath-by-breath VCO2 and VO2 required compensation for transport delay and dynamic response

1982 ◽  
Vol 52 (1) ◽  
pp. 79-84 ◽  
Author(s):  
H. Noguchi ◽  
Y. Ogushi ◽  
I. Yoshiya ◽  
N. Itakura ◽  
H. Yamabayashi
Keyword(s):  
Computer Simulation ◽  
Dynamic Response ◽  
Mass Spectrometer ◽  
Time Constant ◽  
Collection Method ◽  
Transport Delay ◽  
First Order ◽  
On Line

Both transport delay (DELAY) and dynamic response (RESPONSE) of a mass spectrometer would theoretically result in considerable errors in the breath-by-breath calculation of VCO2 and VO2. However, curiously, the contribution of RESPONSE has been ignored. The purpose of this study is to quantify the error caused by RESPONSE. We found that RESPONSE of a mass spectrometer was regarded as a first-order response. We determined DELAY and time constant (T) of RESPONSE and compensated the on-line calculation for both DELAY and RESPONSE and for DELAY only. With T of 150 and 100 ms, deviations of VCO2 from the gas-collection method were 8 +/- 6 and 8 +/- 6 ml/min with compensation for both DELAY and RESPONSE, and 69 +/- 10 and 50 +/- 5 ml/min with compensation for DELAY only, respectively (mean +/- SD). Similar results were obtained with VO2. A computer simulation of error caused by RESPONSE disclosed that the error linearly increased with increasing T. We conclude that to be accurate within +/- 5% of the exact value, compensation should be made when T exceeds 25 ms.

scholarly journals A High Throughput 14C Accelerator Mass Spectrometer

Radiocarbon ◽  
1992 ◽  
Vol 34 (3) ◽  
pp. 458-467 ◽  
Author(s):  
Kenneth H. Purser
Keyword(s):  
Mass Spectrometer ◽  
Unique Feature ◽  
Isotopic Ratios ◽  
Tandem Accelerator ◽  
Ocean Sciences ◽  
Accelerator Mass Spectrometer ◽  
Recent Sample ◽  
Present Design ◽  
On Line ◽  
Differential Transmission

I present design details of a tandem accelerator mass spectrometer, which has been installed at the National Ocean Sciences AMS Facility at Woods Hole, Massachusetts, to provide precision 14C/13C/12C isotopic ratios for sub-milligram-size samples of graphite with throughputs of >4000 samples per year. A unique feature is the capability for simultaneous measurement of all three isotopes after acceleration, to avoid differential transmission effects and to allow on-line fractionation corrections and diagnosis of instrument health. Using filamentous graphite fabricated from a recent sample, we have established the counting rate of 14C ions at between 60–120 s–1.

Reactions of F2+• with aromatic compounds in an ion trap mass spectrometer

1993 ◽  
Vol 65 (1-2) ◽  
pp. 97-100
Author(s):  
Suzanne T. Purrington ◽  
Carol A. Haney ◽  
Robert D. Voyksner
Keyword(s):  
Mass Spectrometer ◽  
Aromatic Compounds ◽  
Ion Trap ◽  
Ion Trap Mass Spectrometer
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