Key facts
- Brand
- Agilent
- Model
- VGA-76
- Category
- Other Electronics
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-12
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Agilent VGA-76 Vapor Generation AA Application Note
The document details a method for analyzing toxic elements like arsenic and antimony in plant materials using vapor generation atomic absorption spectroscopy. It highlights the use of a digestion procedure that avoids perchloric acid, utilizing a mixture of sulphuric, nitric, and hydrogen peroxide acids instead.
The study reports results obtained using an Agilent AA-1475 instrument equipped with background correction and a VGA-76 vapor generator. The analysis was performed on NBS orchard leaves (No. 1571), demonstrating the technique's ability to achieve results in good agreement with certified values.
Agilent VGA-76 specifications
| Instrument Model | Agilent AA-1475 |
|---|---|
| Vapor Generator Model | VGA-76 |
| Recorder Model | Agilent 9176 |
| Printer Model | HP 82905A |
| Sample Type | NBS orchard leaves (No 1571) |
| Sample Mass | approximately 0.5 g |
| Digestion Volume | 5 mL concentrated sulphuric |
| Hydrogen Peroxide Volume | 5 mL volume of 30% v/v hydrogen peroxide |
| Nitric Acid Volume | 2 mL of concentrated nitric acid |
| Final Solution Volume | 25 mL |
| Final Acid Concentration | 7 M hydrochloric acid |
| Integration Time | five 3-second integrations |
All Agilent VGA-76 documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
Which acids are used in the digestion procedure to avoid perchloric acid?
The digestion procedure uses a mixture of sulphuric, nitric, and hydrogen peroxide acids.
What instrument was used to measure arsenic and antimony in the study?
An Agilent AA-1475 with background correction and a VGA-76 vapor generator were used.
What elements can be determined using the VGA-76?
Elements that can be determined include arsenic, antimony, bismuth, selenium, tellurium, tin, and mercury.
From: Agilent VGA-76 Vapor Generation Accessory Application Note
What reducing agent is used in the VGA-76 system?
The system uses sodium borohydride as the reducing agent for the production of hydride vapor.
From: Agilent VGA-76 Vapor Generation Accessory Application Note