Analyze Pesticides, PCBs, Herbicides and More on a Single Rtx-CLPesticides Column Set, Using a micro-ECD and Dual Column Analysis
Get fast separations without sacrificing resolution by using Restek’s proprietary Rtx-CLPesticides and Rtx-CLPesticides2 columns for multiple environmental methods. Instead of changing columns between GC-ECD methods, you can save time by analyzing chlorinated pesticides, PCBs, herbicides, and other halogenated compounds on a single column set using dual column analysis and an Agilent micro-ECD. As shown here, Rtx-CLPesticides and Rtx-CLPesticides2 columns have a unique selectivity and are ideal for multiple GC-ECD methods. Compare them to your current column set and you’ll see the Restek advantage!
Rtx-CLPesticides columns offer the best overall performance for organochlorine pesticides analysis, as well as many other dual column analysis GC-ECD methods (0.32 mm ID columns).
| Method Compound List | Column Pair | Analysis Time (min) | Coelutions | Restek Advantage |
|---|---|---|---|---|
| 8081B (Organochlorine pesticides analysis) | Rtx-CLPesticides / Rtx-CLPesticides2 | 7 / 7 | 0 / 0 | Increase sample throughput with 7 min analyses and baseline resolution. |
| Competitor A column 1 / column 2 | 7 / 8 | 0 / 1 | ||
| Competitor B column 1 / column 2 | 10 / 9 | 0 / 0 | ||
| 8081B (extended)(Organochlorine pesticides analysis) | Rtx-CLPesticides / Rtx-CLPesticides2 | 24 / 23 | 1 / 2 | Best balance of speed and selectivity. All compounds are resolved on at least one column. |
| Competitor A column 1 / column 2 | 27 / 29 | 0 / 3 | ||
| Competitor B column 1 / column 2 | NDP / 16 | NDP / 3 | ||
| 8082A (Polychlorinated biphenyls [PCBs], Aroclors analysis) | Rtx-CLPesticides / Rtx-CLPesticides2 | 7 / 7 | n/a | Fast PCB analysis times. |
| Competitor A column 1 / column 2 | 6 / 7 | n/a | ||
| Competitor B column 1 / column 2 | 24 / 21 | n/a | ||
| 8151A (Chlorinated herbicides analysis) | Rtx-CLPesticides / Rtx-CLPesticides2 | 13 / 13 | 1 / 0 | More elution order changes improve confidence in confirmational results. |
| Competitor A column 1 / column 2 | 13 / 13 | 0 / 0 | ||
| Competitor B column 1 / column 2 | 16 / 15 | 1 / 1 | ||
| 504.1 (EDB, DBCP, TCP analysis) | Rtx-CLPesticides / Rtx-CLPesticides2 | 6 / 6 | 0 / 0 | Reliably separate analytes from trihalomethane interferences. |
| Competitor A column 1 / column 2 | 6 / 6 | 0 / 0 | ||
| Competitor B column 1 / column 2 | NDP | NDP | ||
| 505 (Organohalide pesticides analysis) | Rtx-CLPesticides / Rtx-CLPesticides2 | 18 / 18.5 | 1 / 1 | All compounds resolved on at least one column. |
| Competitor A column 1 / column 2 | 14 / 14 | 0 / 1 | ||
| Competitor B column 1 / column 2 | 35 / 36 | 1 / 2 | ||
| 508.1 (Chlorinated pesticides, herbicides, organohalides analysis) | Competitor A column 1 / column 2 | 21 / 23 | 0 / 3 | Good balance of speed and resolution. |
| Competitor A column 1 / column 2 | 21 / 23 | 0 / 3 | ||
| Competitor B column 1 / column 2 | 18 / 17 | 2 / 4 | ||
| 552.2 (Haloacetic acids, dalapon analysis) | Rtx-CLPesticides / Rtx-CLPesticides2 | 12 / 12 | 0 / 0 | No coelutions—get accurate results for compounds that coelute on other columns. |
| Competitor A column 1 / column 2 | 8 / 9 | 1 / 1 | ||
| Competitor B column 1 / column 2 | NDP / 10 | NDP / 1 | ||
Comparison based on published competitor data. All columns tested were 0.32 mm ID. NDP = no data published.
NOTE: Analyzing dirty or derivatized samples can contaminate your column. Restek does not recommend analyzing trace-level pesticide samples following derivatized samples (e.g., Methods 8151A and 552.2) without first performing inlet maintenance. Standard steps include trimming the guard column and changing the inlet liner, seal, O-ring, and septum.
