XRD |
IR or FTIR |
Chemical or Colorometric |
Other, e.g., Thermal Analysis |
|---|---|---|---|
| Universal | Coal or specific evaluated matrix | Specific evaluated matrix | Thermal analysis not well suited for air samples. |
| Non-destructive | Non-destructive to analyte destructive to matrix | Destructive to analyte and matrix. | Generally destructive towards matrix. |
| MSDS often useful | MSDS needed for non-evaluated matrices. | MSDS needed | MSDS needed |
| Type or description of operation | Type or description of operation | Type or description of operation | Type or description of operation |
| List specific crystalline interferences known to be present at worksite | List chemical interferences known to be present at worksite | List crystalline and chemical interferences known to be present at worksite. Interferences include ionic fluorides, e.g., CaF2 | No likely interferences except perhaps alkaline materials. |
| Air volume and Sample mass | Air volume and Sample mass | Air volume and Sample mass | (Bulks only) |
| Confirmation readily available. | Confirmation possible. | No confirmation generally available. Bulks may be confirmed by microscopy. | No additional confirmation needed; very specific to quartz. |
| Can analyze quartz, cristobalite, and tridymite in diverse respirable dust matrices. | Can analyze quartz, cristobalite, and tridymite in specific respirable dust matrices. | Can analyze but not distinguish quartz, cristobalite, and tridymite in many respirable dust matrices. | Can analyze quartz in many bulk matrices. |
