Dionex Corporation Home

Soil Analysis

Analyses of environmental matrices other than water are necessary to ensure clean air, contamination free soil, and proper disposal of hazardous wastes. Dionex leads the way in innovative solutions for the analysis of air, soil, and wastes. Key to good ion and liquid chromatography applications is sample preparation.

Dionex offers industry-leading technology with Accelerated Solvent Extraction (ASE®) for fast, accurate sample preparation of air filters, soils, solids, and wastes. Coupled with rapid solvent reduction systems, the often labor-intensive steps of sample preparation can be automated in your laboratory. Make certain you have the latest information about Dionex instrumentation, methods, and solutions for your environmental air, soil, and waste analyses.

Extraction of contaminants from solid matrices like soil, sediments, and sludge can be a difficult process, often taking up to eight hours or more. Extractions that normally take hours can be performed in minutes using Accelerated Solvent Extraction (ASE) systems with pH-hardened pathways using Dionium components. Compared to techniques like Soxhlet and sonication, ASE generates results in a fraction of the time.

The steps involved in sample preparation can now be automated with ASE flow-through technology. Filtration and cleanup of solid samples can be achieved as part of the solvent extraction process in a single step. ASE offers a lower cost per sample than other techniques, reducing solvent consumption by up to 90%.

ASE is a patented technique for the extraction of solid and semisolid sample matrices using common solvents at elevated temperatures and pressures. ASE systems are available in both the entry-level ASE 150 system, and fully automated ASE 350.

For extraction of environmental samples, ASE has been proven to be applicable to a wide variety of contaminants:

  • Pesticides and herbicides
  • PAHs and semivolatiles
  • PCBs
  • Dioxins and furans
  • TPH (DRO)
  • Explosives
  • Air sampling cartridges (XAD and PUFs)
  • Brominated flame retardants

ASE meets all of the requirements for extraction under U.S. EPA SW-846 Method 6860 Method 3545A for Pressurized Fluid Extraction, and is accepted under CLP SOW OLMO4.2.

PCBs

Polychlorinated biphenyls (PCBs) are purely synthetic compounds that belong to a family of organic compounds known as chlorinated hydrocarbons. PCBs do not readily break down when exposed to heat or chemical treatment.

TPH and BTEX

Dionex developed ASE® technology to facilitate the extraction of TPH and BTEX from a variety of matrices using a fraction of the time, solvent, and cost of traditional Soxhlet extraction.

Carbamates

The toxicity and persistence dioxins and furans in the environment have generated interest in developing a method for fast, accurate detection in a wide variety of sample matrices.

Explosives

Dionex provides technology for the efficient extraction and analysis of all 14 explosive compounds listed in EPA SW-846 Method 8330, “Nitroaromatics and Nitramines by HPLC.”