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Ralph Obenauf

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Articles by Ralph Obenauf

Matrix Effects in ICP-AES Analysis

ByRalph Obenauf,Vanaja Sivakumar,Laszlo Ernyei
September 1st 2007

SPEX CertiPrep, Inc.

Trace Elements in Fish and Fish Oil Supplements

ByRalph Obenauf,Vanaja Sivakumar,Bill Driscoll
March 1st 2007

SPEX CertiPrep, Inc.

A Statistical Approach to Reporting Uncertainty on Certified Values of Chemical Reference Materials for Trace Metal Analysis (PDF)

ByNimi Kocherlakota,Ralph Obenauf,Robert Thomas
September 1st 2002

The authors discuss an approach by a manufacturer of calibration standards and certified reference materials to standardize the reporting of uncertainty associated with certified values quoted on a certificate of analysis.

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Latest Updated Articles

  • Trace Elements in Fish and Fish Oil Supplements
    Trace Elements in Fish and Fish Oil Supplements

    Published: March 1st 2007 | Updated:

  • Matrix Effects in ICP-AES Analysis
    Matrix Effects in ICP-AES Analysis

    Published: September 1st 2007 | Updated:

  • A Statistical Approach to Reporting Uncertainty on Certified Values of Chemical Reference Materials for Trace Metal Analysis (PDF)
    A Statistical Approach to Reporting Uncertainty on Certified Values of Chemical Reference Materials for Trace Metal Analysis (PDF)

    Published: September 1st 2002 | Updated:



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