|
|
 |
|
|
Milestone mercury analyser - New for 2008
|
|
|
|
The DMA-80 Mercury Analyzer effortlessly analyses liquid and solid samples without sample digestion or wet chemistry pre-treatment steps, and
without any waste disposal. Sample analysis is performed in 5 minutes and up to 40 samples can be automatically processed in less than 4 hours. An intuitive controller uploads sample weights, controls the analysis
and processes data with built-in report generation and networking capabilities
|
|
|
|
|
|
- Easy routine determination of mercury in difficult sample matrices
- Eliminates the need for sample preparation (no wet chemistry!)
- Results in approximately 5 minutes with analysis independent of matrix
- Detection range from 0 to 1,000 ng Hg
- Integral 40 position autosampler for high-throughput, unattended operation
- Quartz sample boats for automated analysis of aqueous samples
|
|
|
|
|
Sequence of Operation
Liquid or solid samples are introduced into the DMA-80 Mercury Analyser autosampler. Prior to
combustion, the sample is initially dried in an oxygen stream passing through a quartz tube located inside a controlled heating coil. The combustion gases are further decomposed on a catalytic column at
750 °C. Mercury vapour is collected on a gold amalgamation trap and subsequently desorbed for quantitation. Mercury content is determined using atomic absorption spectrometry at 254 nm, and the results
are displayed using a Pentium-based control terminal
|
|
|
|
|
|
|
|
Intuitive EasyControl software
The large touch-screen interface provides easy, graphical interaction and allows manual
operation of the instrument, as well as pre-programmed, unattended automatic operation. Parameters can be changed in the middle of a sample run and there is no need to wait for an entire queue of samples
to be processed.
A typical peak profile resulting from analysis is shown where the 1st peak corresponds to the long pathlength flow cell and Hg content up to 20 ng. The instrument determines the
absolute amount of Hg (normally expressed in ng), and then the software calculates its concentration in the sample.
The 2nd peak corresponds to the short pathlength flow cell and Hg content in the
range of 20-1000 ng..The software measures the height, the half width and the area of the absorbance peak, that assists in both method development and troubleshooting. Data can be easily exported into a
spreadsheet.
|
|
|
