ELEMENTS by ICP (Hot Block/HCl/HNO3 Digestion) MW: Table 1
7303
CAS: Table 2
METHOD: 7303, Issue 1
RTECS: Table 2
EVALUATION: PARTIAL
OSHA: Table 2 NIOSH: Table 2 ACGIH: Table 2
Issue 1: 15 March 2003
PROPERTIES: Table 1
ELEMENTS: aluminum antimony* arsenic barium beryllium bismuth* boron
cadmium calcium chromium cobalt copper gallium gold
indium iron lead* magnesium manganese molybdenum neodymium
nickel palladium phosphorus platinum potassium selenium sodium
strontium tellurium thallium tin* titanium vanadium yttrium
zinc
- With certain restrictions (see Table 3)
SAMPLING SAMPLER:
FILTER (0.8-:m, cellulose ester membrane)
FLOW RATE:
1 to 4 L/min
VOL-MIN: -MAX:
Table 1 Table 1
SHIPMENT:
Routine
SAMPLE STABILITY:
Stable
BLANKS:
2 to 10 field blanks per set ACCURACY
MEASUREMENT TECHNIQUE:
INDUCTIVELY COUPLED ARGON PLASMA, ATOMIC EMISSION SPECTROSCOPY
ANALYTE:
See element list above
REAGENTS:
Conc. HCl, 1.25 mL; and conc. HNO3 , 1.25 mL
FINAL SOLUTION:
5% HCl and 5% HNO3 , 25 mL
WAVELENGTH:
Element and instrument specific
BACKGROUND CORRECTION:
Spectral wavelength shift
CALIBRATION:
Elements in 5% HCl, 5% HNO3 LOQ to 50,000 :g/sample [1]
RANGE STUDIED:
5,000 to 50,000 :g/sample
RANGE:
BIAS:
Not determined
ESTIMATED LOD: Varies with element; Table 1
OVERALL PRECISION:
Not determined
ACCURACY:
Not determined
PRECISION (Š):
Not evaluated
APPLICABILITY: The working range of this method is up to 100 mg/m3 for each element in a 500-L sample (the minimum range depends on the LOD for each sample; see Table 1). The analysis is not compound specific. Certain elemental compounds are known to be acceptable or unacceptable by this method (see Table 3). For unverified compounds, a test run should be conducted using a known amount of the compound in question to determine acceptability. INTERFERENCES: Interferences are spectral in nature and are accounted for by choosing appropriate wavelengths, applying interelement correction factors, and background correction. OTHER METHODS: Alternative, more sensitive methods exist for some elements by graphite furnace atomic absorption spectroscopy. This method is similar to NIOSH Method 7301, differing only in the use of the hot block for digestion of the sampler.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
