Teledyne API Model 200AU NOX Analyzer Instruction Manual, 02293, Rev. F

7.6.6 Moly Converter Efficiency

The moly efficiency should be 96 to 102% efficient. If it is outside these limits it should be replaced. The converter efficiency can be determined from the data collected in Section 7.6.5.3.

For each NO2 concentration generated:

1.

Calculate the concentration of NO2 converted as:

 

 

[ NO2 ]CONV = [ NO2 ]OUT - ([ NOx ]ORIG - [ NOx ])REM

Equation 7 - 11

Where:

[NOx]ORIG is the NOx concentration before the GPT ozone is turned on, and [NOx]REM is the NOx remaining after GPT.1

2.Plot the [NO2]CONV concentration output by the instrument on the y-axis against the concentration generated [NO2]OUT on the x-axis. The plot should be a straight line within the

± 2% linearity criteria given for the NOx and NO channels.

3.Determine the best straight line fit of the plot either by inspection or least squares. The slope of the resulting straight line is the moly efficiency. The value should be between .96 and 1.02. If not, the moly needs to be replaced.

4.If you want the M200AU to automatically compensate (Section 7.6.6.1) for converter efficiency, enter the efficiency value in the front panel by CAL-CONC-MOLY-SET, then key in the slope from step 3 followed by ENTR. Press EXIT to return to the SAMPLE menu.

7.6.6.1 Automatic Moly Converter Efficiency Compensation

The M200AU can automatically compensate the NOx and NO2 readings for the molybdenum converter efficiency. There are 2 ways to enter the converter efficiency into the instrument. The first is to enter the efficiency as a decimal fraction using the CAL-CONC-MOLY-SET menu. The second method is to have the M200AU compute the efficiency using the CAL-MOLY-CAL menu. The procedure is given in Table 7-14. To disable the compensation, press CAL-CONC- MOLY-SET and enter 1.0000 as the efficiency.

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Teledyne 200AU instruction manual Automatic Moly Converter Efficiency Compensation
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200AU specifications

The Teledyne 200AU is a cutting-edge analytical instrument designed primarily for trace and ultra-trace analysis of elements in various liquid samples. Renowned for its reliability and precision, this inductively coupled plasma mass spectrometer (ICP-MS) is widely utilized in environmental monitoring, food safety, clinical diagnostics, and geochemical research.

One of the distinguishing features of the Teledyne 200AU is its exceptional sensitivity, allowing for the detection of elements at concentrations as low as parts per trillion (ppt). This sensitivity is crucial for applications where even minute traces of contaminants can have significant implications. The instrument also boasts a wide dynamic range, accommodating high-concentration samples without compromising accuracy.

The Teledyne 200AU incorporates advanced technologies that enhance its analytical capabilities. At the core of its design is a robust ICP source, which ensures optimal ionization efficiency. The instrument also features a high-resolution quadrupole mass analyzer, which enables precise separation and identification of ions based on their mass-to-charge ratio. This feature is essential for distinguishing between isotopes and analyzing complex mixtures.

Another notable characteristic of the Teledyne 200AU is its user-friendly interface, which simplifies the operation and data management processes. The software is intuitive, offering sophisticated data processing algorithms that streamline analysis. Users can easily access real-time data visualization, facilitating timely decision-making based on analytical results.

The instrument is built with durability in mind, featuring a compact design that allows for easy integration into various laboratory environments. The Teledyne 200AU is also equipped with state-of-the-art safety features, including enhanced cooling systems and automated shutdown protocols to protect both the instrument and the user.

Moreover, the Teledyne 200AU supports a variety of sample introduction methods, including nebulization and laser ablation, providing flexibility to accommodate different types of samples and experimental needs. Its multi-element capability further enhances its versatility, allowing simultaneous detection of multiple elements in a single analysis.

In summary, the Teledyne 200AU stands out as a premier instrument in the field of mass spectrometry. Its combination of high sensitivity, advanced technology, user-friendly features, and robust design makes it an invaluable tool for scientists and researchers seeking precise elemental analysis across various disciplines.
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