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High productivity vapor generation with the VGA 77 accessory

High productivity vapor generation with the VGA 77 accessory
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High productivity vapor generation with the VGA 77 accessory - 1

High productivity vapor generation with the VGA 77 accessory • • Technical Overview Agilent's fully automated, modular VGA 77 Vapor Generation Accessory is an optional accessory for the 200 Series Atomic Absorption Spectrometers. It is ideal for rapid trace level determinations of mercury (using the proven cold vapor technique) and other hydride-forming elements at parts-per-billion (pg/L) concentrations. The VGA 77 offers: • The convenience of flame AA determinations • Unmatched precision at ppb levels • Ease-of-use, flexibility and automation

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High productivity vapor generation with the VGA 77 accessory - 2

The continuous flow VGA 77 offers the convenience of flame AA operation, while delivering exceptional precision with total flexibility and automation. Benefits of the VGA 77 include: • High sensitivity • Precisions of 1-2 % RSD at ppb levels, achieved using integration of the steady state signal for a few seconds • High sample throughput—results are achieved in less than 1 minute allowing determination of up to 70 samples/hour • Simple operation—the integral pump provides continuous flow conditions with automatic reagent addition • Enhanced stability—the continuous flow conditions ensure...

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High productivity vapor generation with the VGA 77 accessory - 3

• Greater productivity—samples only need to be aspirated once to obtain precise results from multiple replicates. Flow injection produces transient signals, requiring separate injections for each replicate reading. Each replicate consumes several milliliters of sample to ensure the injection loop is filled. This reduces sample throughput and increases sample consumption • Simple and automatic operation—each sample is automatically combined with a continuous flow of acid and reagents Table 1. Typical performance # with flow through cell * using Agilent high intensity UltrAA lamps Unattended...

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High productivity vapor generation with the VGA 77 accessory - 4

Ordering information For ordering information or for more information about our products and services, please consult your local Agilent office or supplier, or see the Agilent website at: www.agilent.com. www.agilent.com Agilent shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. Information, descriptions, and specifications in this publication are subject to change without notice. © Agilent Technologies, Inc. 2016 Published May 4, 2016 Publication number: 5990-6710EN

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