Atomic Absorption Spectrometry
Perkin-Elmer PinAAcle 900T
Methods:
Flame (acetylene/air, 2300°C, preferably aqueous solutions).
Solutions are aspirated via a hose capillary and sprayed into the flame. Approx. 5ml of solution is used for one measurement (average of 3 measurements). It is a quick method for the determination of individual elements.
Graphite furnace with autosampler
Smallest sample quantities (liquid) are atomised in a graphite cuvette up to 2800°C.
The sample amount is about 20µl per single measurement, but much more time is needed to work out the temperature programme/measurement routine. For a complicated sample matrix, the temperature programme must be precisely adapted. The detection limits are much better than with the flame, but in both cases they depend on the respective element.
The elements listed here can be analysed, a hollow cathode lamp is available.
Element | detection limit [µg/l] | |
Flame (Acetylene/Air) | Graphit Furnace | |
Aluminium (Al) | - | 0,1 |
Lead (Pb) | 30 | 0,09 |
Cadmium (Cd) | 0,8 | 0,002 |
Calcium (Ca) | 1,5 | 0,01 |
Chromium (Cr) | 3 | 0,004 |
Iron (Fe) | 5 | 0,06 |
Gold (Au) | 9 | 0,15 |
Iridium (Ir) | 900 | 3,0 |
Potassium (K) | 3 | 0,005 |
Cobalt (Co) | 9 | 0,15 |
Copper (Cu) | 1,5 | 0,014 |
Lithium (Li) | 0,8 | 0,06 |
Magnesium (Mg) | 0,15 | 0,004 |
Manganese (Mn) | 1,5 | 0,005 |
Sodium (Na) | 0,3 | 0,005 |
Nickel (Ni) | 6 | 0,07 |
Palladium (Pd) | 30 | 0,09 |
Platin (Pt) | 60 | 2,0 |
Rhodium (Rh) | 6 | Keine Angabe |
Ruthenium (Ru) | 100 | 1,0 |
Silver (Ag) | 1,5 | 0,005 |
Silicon (Si) | - | 1,0 |
Thallium (Tl) | 15 | 0,1 |
Bismuth (Bi) | 30 | 0,05 |
Zinc (Zn) | 1,5 | 0,02 |
Tin (Sn) | - | 0,2 |
Contact:
Annette Ricken Tel.: 0211/81-12874, e-mail: