Measurement of vanadium, nickel, and arsenic in seawater and urine reference materials by inductively coupled plasma mass spectrometry with cryogenic desolvation

Journal Article · Wed Sep 15 04:00:00 EDT 1993 · Analytical Chemistry (Washington); (United States)

DOI:https://doi.org/10.1021/ac00066a011· OSTI ID:6915324

Alves, L C; Allen, L A; Houk, R S ^[1]

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1. Ames Lab.-U.S. Department of Energy, IA (United States) Iowa State Univ., Ames, IA (United States)

Addition of a small dose (2%) of H[sub 2] to the aerosol gas flow enhanced analyte signals by a factor of 2-3, which compensated for the loss of analyte signal that accompanied earlier efforts at cryogenic desolvation with inductively coupled plasma mass spectrometry (ICP-MS). Vanadium, nickel, and arsenic at microgram per liter levels in urine, river, and seawater reference materials were determined. The polyatomic ions ClO[sup +], CaO[sup +], and ArCl[sup +], which normally cause severe overlap interferences for these elements, were attenuated to manageable levels by cryogenic desolvation. The samples were simply diluted with 1% HNO[sub 2] so that the chloride could be removed as HCl. The analytical results obtained for these standard reference materials agreed closely with the certified or recommended values. The detection limit ranges (3[sigma]) obtained were 10-1000 ng L[sup [minus]1] for V, 0.03-20 [mu]g L[sup [minus]1] for Ni, and 4-7000 ng L[sup [minus]1] for As in the original samples. The samples were introduced by flow injection to minimize clogging of the sampling orifice. 29 refs., 2 figs., 5 tabs.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6915324
• Journal Information: Analytical Chemistry (Washington); (United States), Journal Name: Analytical Chemistry (Washington); (United States) Vol. 65:18; ISSN 0003-2700; ISSN ANCHAM
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
661210 -- Cryogenics-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AEROSOLS
ARSENIC COMPOUNDS
BIOLOGICAL MATERIALS
BIOLOGICAL WASTES
BODY FLUIDS
CALIBRATION STANDARDS
CATIONS
CHARGED PARTICLES
CHLORINE COMPOUNDS
COLLOIDS
COMPILED DATA
CRYOGENICS
DATA
DATA ACQUISITION
DISPERSIONS
ELEMENTS
HALOGEN COMPOUNDS
HYDROCHLORIC ACID
HYDROGEN
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IONS
MASS SPECTROSCOPY
MATERIALS
NICKEL COMPOUNDS
NITRIC ACID
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
SEAWATER
SOLS
SPECTROSCOPY
STANDARDS
SURFACE WATERS
TRANSITION ELEMENT COMPOUNDS
URINE
VANADIUM COMPOUNDS
WASTES
WATER