ELEMENTS by ICP (Hot Block/HCl/HNO3 Ashing): METHOD 7303, Issue 1, dated 15 March 2003 - Page 6 of 6 TABLE 3: VALIDATION SUMMARY Status1
Analyte
Analyte
Status
Analyte
Status
Ag
Not Valid
CuO
Valid
S
Not Valid
Al
Valid
Fe
Valid
Sb
Partially Valid4
Not Valid
Fe2O3
Valid
Sb2O3
Partially Valid5
As
Valid
Ga
Valid
Se
Valid
Au
Valid
In
Valid
Si
Not Valid
B
Valid
KCI
Pending
Sn
Partially Valid6
Ba
Pending
Mg
Valid
SnO
Pending
BaO
Pending
MgO
Valid
SnO2
Pending
BaO2
Pending
Mn
Valid
Sr
Valid
BaCl2
Valid
MnO
Valid
SrCrO4
Valid (by Cr)
BaSO4
Pending
Mo
Valid
Te
Valid
Be
Valid
NaCl
Pending
Ti
Valid
Bi
Partially Valid2
Nd
Valid
Tl
Valid
Ca
Valid
Ni
Valid
V
Valid
CaCO3
Valid
P
Valid
V2O5
Valid
Al2O3
3
CaO
Valid
Pb
Partially Valid
Y
Valid
Cd
Valid
PbCrO4
Valid (by Cr)
Zn
Valid
Co
Valid
PbO
Valid
ZnO
Valid
Cr
Valid
Pd
Valid
Zr
Not Valid
Cu
Valid
Pt
Valid
ZrO
Not Valid
1
Status definitions
2 3
4 5 6
Valid:
The method is suitable for samples up to at least 0.0500 g bulk material with recoveries of between 90 and 110 percent. This weight exceeds most expected levels encountered in work environments.
Partially Valid:
The m eth od is suita ble with bulk-material recoveries of between 90 and 110 percent under certain conditions (as footnoted abo ve).
Not Valid:
The method procedure is not suitable for samples at any weight with recoveries of between 90 and 110 percent. An alternative method should be used.
Valid up to 10,000 :g/sample and within 7 days of sample digestion. Va lid up to 50,000 :g/sample and at least 2 4 ho urs after s am ple digestion ; Valid up to 15,000 :g/s am ple within 24 hours of sample digestion. Valid up to 25,000 :g/sample and within 7 days of sample digestion. Valid up to 25,000 :g/sample and within 7 days of sample digestion. Valid up to 30,000 :g/sample and within 7 days of sample digestion.
NOTE:
The upper limits of the method can be extended by serial dilution of the samples at the time of analyses.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
