5 Table 2: 5 µg/L spike recovery data for Stoddard solvent.
Figure 1: Results of normalised intensities show 2.5-hour stability of petroleum ether.
Table 2 shows the high degree of accuracy that can be achieved through ICP-MS, even for the heavier naphtha, across all elements analysed. To demonstrate the stability of the method, a series of elements was monitored over a 2.5 hour period, Figure 1 shows the high degree of stability that was achieved.
This study demonstrates that with a high quality, robust ICP-MS instrument – such as PerkinElmer’s NexION 300 ICP-MS – it is possible to analyse trace-level metals in
complex and highly variable naphtha solvents, under a single set of instrumental conditions. The high-power plasma conditions and chilled spray chamber enable the highly volatile solvent matrix to be handled easily. Introducing oxygen prevents the build-up of carbon on the sampler cone, thereby maintaining sensitivity and the use of ammonia in the DRC enables the removal of polyatomic interfering species. These factors combine to provide excellent stability, proving the efficacy of ICP-MS for the determination of elements at sub ppb concentrations in challenging organic matrices.
First Published in Labmate UK & Ireland, July 2011
Mass Spec Options to Suit All
Whether customers are looking to save money on their mass spec service contract or new equipment, KRSS (formerly Kinesis-RSS) and Research Scientific Services (RSS) have options for everyone.
KRSS formed in 2007 and is the Europe's fastest growing independent MS sales and service organisation, employing experienced engineers covering the UK, Europe and beyond. RSS is the largest independent MS sales and service company in the US; formed in 1991 by ex Micromass management/engineers covering the US and Canada.
Both companies offer competitively priced service options that minimise instrument downtime, maximise sample throughput and ensure quality results are delivered on time.
Circle no. 311
MBH ANALYTICAL LTD
CERTIFIED REFERENCE MATERIALS
OES – XRF – AA – ICP FOR ALL YOUR
CERTIFIED REFERENCE MATERIALS CONTACT
MBH
CATALOGUE AVAILABLE WEBSITE
www.mbh.co.uk
A BS EN ISO 9001 REGISTERED COMPANY - CERTIFICATE NO. 0524
MBH ANALYTICAL LIMITED Holland House, Queens Road, BARNET, Herts EN5 4DJ, England
Tel : (44) 020 8441 2024 Fax : (44) 020 8449 0810 E-mail:
info@mbh.co.uk
Circle no. 312 Circle no. 313
Interested in publishing a Technical Article?
Contact Gwyneth on +44 (0)1727 855574 or email:
gwyneth@intlabmate.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44
