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D5233-92 – Standard Test Method Technical Guide
📐 Scope and Application
This test method, ASTM D5233-92 (Reapproved 2023), specifies the single batch extraction procedure for solid wastes or sludges to evaluate leaching potential. The extract obtained is used to measure analyte concentrations for pass/fail comparisons against set acceptance levels. The test may be omitted if total analysis confirms the absence of target analytes or if acceptance levels cannot be exceeded (Section 1.3). Furthermore, if any liquid fraction of the extract exhibits a concentration equal to or greater than the acceptance level, the waste is considered failed without the need for further analysis (Section 1.4).
⚙️ Test Procedure and Analytical Considerations
The batch extraction method is designed primarily for non-volatile analytes under the test conditions. Although volatile analytes can be detected, the extract must not be used for determining volatile organic analytes (Section 1.6). The procedure does not detail all sampling and analytical requirements; users are responsible for establishing appropriate practices (Section 1.7). Values are reported in SI or inch-pound units as per the standard (Section 1.8). Safety precautions are necessary, and users should refer to Note 8 for specific guidance (Section 1.9).
📊 Application Criteria and Referenced Standards
The following table outlines the key conditions for applying this test method, based on the standard’s scope.
| 🟦 Condition | 📐 Required Action |
|---|---|
| Total analysis shows no target analytes | Test not required (1.3) |
| Acceptance levels cannot possibly be exceeded | Test not required (1.3) |
| Liquid fraction concentration ≥ acceptance level | Waste fails immediately (1.4) |
| Volatile analyte detected | Waste fails if acceptance level exceeded (1.6) |
| Volatile organic analytes | Extract unsuitable for determination (1.6) |
Additionally, the standard references several ASTM practices for sampling and analysis, as listed below.
| 📏 Reference | 🎯 Description |
|---|---|
| D75/D75M | Practice for Sampling Aggregates |
| D420 | Guide for Site Characterization |
| D1193 | Specification for Reagent Water |
| E122 | Practice for Calculating Sample Size |
Technical Note: Ensure that the extraction conditions are controlled to prevent analyte loss. For volatile organic compounds, consider alternative methods such as those described in other ASTM standards.
Safety Precaution: Refer to Note 8 in the standard for specific precautionary statements. Users must establish appropriate safety and environmental practices.
❓ Frequently Asked Questions
🔍 What is the purpose of ASTM D5233-92?
It provides a single batch extraction method to assess the leaching potential of wastes, helping to determine if analyte concentrations exceed acceptance levels.
💡 When can the test be skipped?
If total analysis shows no target analytes or if acceptance levels cannot be exceeded, the test is not required (Section 1.3).
⚡ What if a liquid fraction concentration is high?
If any liquid fraction has a concentration equal to or above the acceptance level, the waste fails immediately without further analysis (Section 1.4).
📌 Can this method be used for volatile organics?
The extract should not be used for volatile organic analytes; however, if detected, failure is determined based on acceptance levels (Section 1.6).