Instrumental neutron activation analysis and inductively coupled plasma mass spectrometry on atmospheric biomonitors

• Type: Article in International Scientific Journal
• Date: 2007

Authors

freitas, mc (Author) Other; pacheco, amg (Author) Other; dionisio, i (Author) Other; sarmento, s (Author) Other; baptista, ms (Author) Other; vasconcelos, mtsd (Author) Other; cabral, jp (Author) FCUP

Journal

Title: Journal of Radioanalytical and Nuclear Chemistry

Vol. 273

Pages: 705-711

ISSN: 0236-5731

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 4 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-004-7YH

DOI: 10.1007/s10967-007-0934-2

Abstract (EN): In a biomonitoring study aiming to find alternatives to lower epiphytes as air-quality monitors,lichens and tree bark were exposed at different sites for discontinuous periods of 2 months and continuously. Native lichens were collected as well. The contents for 22 elements were obtained by both instrumental neutron activation analysis (INAA) and inductively coupled plasma mass spectrometry (ICP-MS). Quality control as asserted by analyzing ISE-921, NIST-1547 and TL-1 was good Losses of As and Se by volatilization during sample digestion and neutron irradiation were evident, Ca contents by ICP-MS appeared underestimated probably due to the formation of the insoluble fluoride. ICP-MS featured a better precision than INAA. Nonparametric statistics were applied to the ICP-MS replicates, to those determined by INAA, and to compare the results of both techniques. High or even excellent correlations were found between replicates in INAA, whereas, in ICP-MS, Cr and Ta were just fairly or not correlated. As an overall comparison of the techniques, biased results were found for As, Ba, Ce, Cr, Cs, Hf, La, Sc, Se, Ta, and Zn, unbiased results could be found for Ca, Co, Fe, K, Na, Rb, Sb, Sm, Tb, Th, and U.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7