FI based Sorbent Extraction
There are numerous examples of sophisticated and very useful FI manifolds with a high degree of complexity (Kolev & McKelvie 2008).
Yet, perhaps the most complex system has been designed by oceanographers, for monitoring of traces of Fe in sea water. (Measures 1995), described in the previous section.
1.3.12.
In spite of it complex system of channels and valves, this method has been extensively used in laboratories and aboard ship for mapping ocean regions deficient in iron. The detection limit is 0.9nMFe with a sampling frequency of 10s/hr.
The method has been recently modified (Bruland 2006) and verified by Worsfold using flow injection chemiluminiscence catalytic assay.
The instrument shown here is located in Measure’s laboratory at the University of Hawaii and in a transportable laboratory at U.H.
Measures, C. I., J. Yuan, and J. A. Resing. 1995. Mar.Chem. 50:3- 12.
