6533b855fe1ef96bd12b073f

RESEARCH PRODUCT

Multielemental determination of trace mineral elements in seawater by dynamic reaction cell inductively coupled plasma- mass spectrometry after Al(OH)3 coprecipitation

Eva SorianoMiguel De La GuardiaAgustín Pastor

subject

Matrix (chemical analysis)IsotopeTrace mineralChemistryCoprecipitationPolyatomic ionAnalytical chemistrySeawaterInductively coupled plasma mass spectrometrySpectroscopyAnalytical Chemistry

description

Abstract A simple method has been developed for the simultaneous determination of 12 trace mineral elements in seawater using, in some cases, several target isotopes (51V, 52Cr, 55Mn, 58,60Ni, 59Co, 63,65Cu, 64,66,68Zn, 75As, 78Se, 111,113Cd, 206,207,208Pb y 238U) in seawater. The method combined a simple and fast Al(OH)3 co-precipitation method, to pre-concentrate mineral elements and to separate them from the seawater matrix, and inductively coupled plasma mass spectrometry using the dynamic reaction cell with NH3 gas to do quantitative determinations free from polyatomic interferences. The recoveries of trace elements after Al(OH)3 co-precipitation varies between 80% for 111Cd and 116% for 59Co, which evidenced the accuracy of the method developed. The determination of 52Cr must be carried out by ICP-MS in standard mode due to the excess errors obtained using the proposed methodology.

yearjournalcountryeditionlanguage
2020-09-01Microchemical Journal
https://doi.org/10.1016/j.microc.2020.104864