DETERMINATION OF SOME TRACE METAL CONCENTRATIONS IN IMPORTED FRUITS BY F-AAS AND ICP-MS

2010 ◽  
Vol 9 (8) ◽  
pp. 1039-1044 ◽  
Author(s):  
Alina Soceanu
Keyword(s):  
Trace Metal ◽  
Metal Concentrations ◽  
Icp Ms

scholarly journals Simultaneous Determination of Cr, As, Se, and Other Trace Metal Elements in Seawater by ICP-MS with Hybrid Simultaneous Preconcentration Combining Iron Hydroxide Coprecipitation and Solid Phase Extraction Using Chelating Resin

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Akihide Itoh ◽  
Masato Ono ◽  
Kota Suzuki ◽  
Takumi Yasuda ◽  
Kazuhiko Nakano ◽  
...  
Keyword(s):  
Trace Metal ◽  
Solid Phase ◽  
Iron Hydroxide ◽  
Environmental Water ◽  
Chelating Resin ◽  
Metal Elements ◽  
Icp Ms ◽  
Trace Metal Elements ◽  
Hydroxide Coprecipitation

In the present study, ICP-MS with a new hybrid simultaneous preconcentration combining solid phase extraction using chelating resin and iron hydroxide coprecipitation in one batch at a single pH adjustment (pH 6.0) were developed for multielement determination of trace metal ions in seawater. In multielement determination, the present method makes it possible to determine Cr(III), As(V), Se (IV), and other 14 trace metal elements (Ti, V, Co, Ni, Cu, Zn, Zr, Ge, Cd, Sb, Sn, W, Pb, and U) in seawater. Moreover, for speciation analyses of Cr, As, and Se, the pH dependence on recovery for the different chemical forms of Cr, As, and Se was investigated. In speciation analyses, Cr, As, and Se were determined as the total of Cr (III) and a part of Cr (VI), total of As (III) and As (V), and Se(IV), respectively. Determination of total of Se and Cr(VI) remains as future task to improve. Nevertheless, the present method would have possibility to develop as the analytical method to determine comprehensively most metal elements in all standard and guideline values in quality standard in environmental water in Japan, that is, most toxic metal elements in environmental water.

Sampling techniques for reliable determination of trace metals in macrophytes and periphyton

1995 ◽  
Vol 46 (7) ◽  
pp. 1047
Author(s):  
TP McBride ◽  
BN Noller
Keyword(s):  
Trace Metals ◽  
Trace Metal ◽  
Submerged Macrophytes ◽  
Dry Weight ◽  
Total Sample ◽  
Flood Plain ◽  
Sampling Techniques ◽  
Metal Concentrations ◽  
Reliable Determination

Sampling techniques were developed to measure trace-metal concentrations reliably in the shoots of a submerged macrophyte, Najas tenuifolia, and its attached periphyton growing in the Magela Creek flood plain in monsoonal northern Australia. At each site, 30 samples were collected within an 8-m by 8-m quadrat in a pattern of five samples from each of six irregularly spaced points. Samples were collected underwater to include all periphyton present, and precautions were taken at all stages of processing to avoid contamination. Periphyton was dislodged for separate chemical analysis by sonication followed by vigorous shaking. A significant aspect was the large amount of periphyton, up to 35% of the total sample dry weight, associated with the Najas sp. Only a proportion, up to 43%, of this periphyton could be dislodged by the physical procedures used. Trace metals were generally not present in the same concentrations in both the Najas sp. and the periphyton. The average trace-metal concentrations (μg g-1 dry weight) and standard errors measured in the Najas sp. (and periphyton) were cadmium 0.24 � 0.013 (0.093 � 0.012), copper 5.2� 0.25 (12 � 0.74), lead 0.93 � 0.084 (6.5 � 0.43), manganese 2500 � 110 (1500 � 110), uranium 0.24 � 0.023 (0.27 � 0.030), and zinc 38 � 1.0 (23 � 1.5). The significant differences in Najas sp. and periphyton trace-metal concentrations show the need to consider the effect of periphyton when sampling and reporting trace-metal concentrations in submerged macrophytes.

scholarly journals Determination of trace metal concentrations in a flooded tropical lake during a complete hydrological cycle

2005 ◽  
Vol 41 (1) ◽  
pp. 47-55 ◽  
Author(s):  
W. J. Barreto ◽  
M. Reche Ribeiro ◽  
I. S. Scarminio ◽  
M. C. Solci ◽  
J. Nozaki ◽  
...  
Keyword(s):  
Trace Metal ◽  
Hydrological Cycle ◽  
Tropical Lake ◽  
Metal Concentrations
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