Key facts
- Brand
- Agilent
- Model
- 7000A Series
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-02
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Agilent 7890A/7000A Series Triple Quadrupole GC/MS Backflushing Application Note
This document presents a method for the routine detection and quantification of biomarkers in petroleum samples using the Agilent 7890A/7000A Series Triple Quadrupole GC/MS. The method utilizes a Pressure Controlled Tee (PCT) configuration with backflushing to remove higher boiling substances from the column prior to subsequent runs. This approach allows for the detection of diverse biomarkers at levels as low as 2 ppm with relative standard deviations (RSDs) well below 5% in a single run. The technique is suitable for fingerprinting petroleum samples and deconvoluting oil mixtures in complex systems.
Read onlineAgilent 7000A Series specifications
| Detection limit | 2 ppm |
|---|---|
| Precision (RSD) | below 5% |
| Source temperature | 250 °C |
| Quadrupole temperature | 150 °C |
| Delta EMV | 70 eV |
| Acquisition mode | Selected reaction monitoring |
Source: Agilent 7890A/7000A Series Triple Quadrupole GC/MS Backflushing Application Note
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Questions answered in these manuals
What is the detection limit for biomarkers using this method?
The method can detect, confirm, and quantify biomarkers at levels as low as 2 ppm.
From: Agilent 7890A/7000A Series Triple Quadrupole GC/MS Backflushing Application Note
What is the typical precision of the analysis?
The analysis achieves relative standard deviations (RSDs) well below 5%.
From: Agilent 7890A/7000A Series Triple Quadrupole GC/MS Backflushing Application Note
What analytes can this method detect?
The method detects melamine, ammelide, ammeline, and cyanuric acid.
From: Agilent 7890A/7000A Series Melamine Screening Confirmation Application Note
How does the method improve upon previous regulations?
It provides a sensitivity of 0.25 ppm, meeting the FDA import alert requirement which is lower than the previous 2.5 ppm limit.
From: Agilent 7890A/7000A Series Melamine Screening Confirmation Application Note