Metals Department Increases Capacity with Fourth ICP/MS Instrument

Mar 26

Written by:
3/26/2014 12:34 PM  RssIcon

A new Agilent 7700x ICP/MS has been installed, validated and currently running samples for EPA Methods 200.8 and 6020. The instrument is about twice as sensitive than our previous ICP/MS Agilent 7500ce model. The new instrument is equipped with an Integrated Sample Introduction System (ISIS) which increases sample throughput while reducing difficult matrices such as seawater and brines samples. The addition of this instrument increases our capacity while allowing us to further segregate methods and matrices to streamline processing of samples, resulting in enhanced turnaround time for our customers. Additionally, new method development is an on-going process at Weck Laboratories, with new protocols coming on-line such as trace metals in nutritional supplements by United States Pharmacopeia (USP) methods <232> and <233> employing microwave digestion followed by ICP/MS determination.

Routine Metals Analysis Methods

  • Inductively Coupled Plasma Optical Emission Spectroscopy (ICP/OES)
    • 33 Elements by EPA Methods 200.7 and 6010
    • Aqueous (2-500 ug/L) and solid (0.5-100 mg/Kg) matrices
  • Inductively Coupled Plasma Mass Spectrometry (ICP/MS)
    • 60 Elements by EPA Methods 200.8 and 6020
    • Aqueous (0.1-5 ug/L) and solid (0.2-5 mg/Kg) matrices
  • Cold Vapor Atomic Absorption (CVAAS)
    • Mercury by EPA Method 245.1, 7470, 747
    • Aqueous (0.05 ug/L) and solid (0.01 mg/Kg) matrices

Speciation Methods for Arsenic & Selenium

  • Liquid Chromatography - Inductively Coupled Plasma Mass Spectrometry (LC/ICP/MS)
    • Speciation of Arsenic (III, V, Arsenobetaine, Monomethyl-, Dimethyl-)
    • Speciation of Selenium (IV, VI)
    • Aqueous matrices (0.4-0.5 ug/L)

Ultra-Trace Methods for Metals in Ambient Waters (Clean Room)

  • Inductively Coupled Plasma Mass Spectrometry (ICP/MS)
    • 3 Elements by EPA Method 1638
    • Aqueous matrices (0.05 ug/L)
  • Inductively Coupled Plasma Mass Spectrometry (ICP/MS)
    • 21 Elements by EPA Method 1640 (automated SeaFast-3 interface)
    • Aqueous matrices (0.01-1 ug/L)
  • Atomic Fluorescence Spectrometry (AFS)
    • Mercury by EPA 245.7 and 1631E
    • Aqueous matrices (0.2-5 ng/L)

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