Sample Collection
Samples and digest/extract fractions are collected, preserved and handled under the applicable SW‑846 preparation method and project requirements. Trace‑level work requires careful contamination control.
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ICP-MS
US EPA Method 6020
Overview of "Inductively Coupled Plasma–Mass Spectrometry"
US EPA Method 6020 describes trace‑element determinations at low concentrations in water samples and in waste extracts or digests by ICP‑MS. The method emphasizes internal standards, isobaric interference correction, calibration, tuning checks and ongoing QC verification.
End-to-End Analytical Process
Sample Preparation
Aqueous, soil, sludge and waste samples are digested or extracted using the appropriate SW‑846 preparation procedure; digestates are diluted to control dissolved solids and matrix effects.
Analysis & Maintenance
Prepared samples are analyzed by ICP‑MS with calibration blanks, internal standards, interference correction, tuning checks and ongoing QC verification.