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

Selection of NO span gas standards

The NIST-SRM's provide references against which all calibration gas mixtures must be compared (Section 2.0.7, Q.A. Handbook). The procedure requires the comparison of the concentration of a commercial, working calibration standard to an NIST-SRM. This is described in Subsection 7.1 of Section 2.0.7, Q.A. Handbook. Subsections 7.1.4 and 7.1.5 describe the verification and re-analysis of cylinder gases.

Care must be taken to assure that no oxygen is allowed in the NO tank, regulator, or sample lines. If oxygen is present, it reacts with NO to produce NO2, which can lead to significant errors in NO concentration measurement.

It is good practice to request a NOx analysis from the supplier of the NO calibration gas. Generally the maximum NO2 impurity that should be allowed is 1% of the NO concentration. The NO2 impurity in the NO standard can be measured by the M200AU. A procedure is given in the TAD for NO2 measurement.

Use of NO2 permeation tubes as standards

The steps required to compare the concentration of a commercial working calibration standard to an NIST-SRM are described in Subsection 7.3.3 of Section 2.0.7, Q.A. Handbook. See Subsection 7.3.6 for the re-analysis of permeation tubes.

7.6.3 Data Recording Device

Either a strip chart recorder, data acquisition system, digital data acquisition system should be used to record the data from the M200AU RS-232 port or analog outputs. If analog readings are being used, the response of that system should be checked against a NIST referenced voltage source or meter. Data recording device should be capable of bi-polar operation so that negative readings can be recorded.

7.6.4Gas Phase Titration (GPT) System

7.6.4.1Gas Phase Titration (GPT

Gas Phase Titration (GPT) with serial dilution is recommended for checking the converter efficiency and NO2 channel linearity of the M200AU. Those using a NO2 permeation tube should refer to TAD.2

The principle of GPT is based on the rapid gas phase reaction between NO and O3 which produces stoichiometric quantities of NO2 as shown by the following equation:

NO + O3 → NO2 + O2

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Teledyne 200AU instruction manual Data Recording Device, Gas Phase Titration GPT System, Selection of no span gas standards
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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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