Analytical Suite Metadata

ActLabs INAA (Sr, no Ag, no Hg)



The samples were analysed for 33 elements (including Sr, excluding Ag and Hg) by instrumental neutron activation analysis (INAA).  The analyses were done by Actlabs Ltd., in Ancaster, Ontario.

Distinguishing characteristics:

  • Sr detection limit: 500 ppm

 

General Methodology:

Thirty (30) gram samples are encapsulated and irradiated at a thermal neutron flux of 7x1011 n cm-2 s-1.  After a 7-day decay the samples are counted under computer control on a high purity Ge detector with a resolution of 1.70 kev for the Co-60 1332 kev photopeak.  For every 11 samples that are irradiated, 1 internal standard which has been calibrated against approximately 80 international reference materials is analysed.  Also included are two NiCr flux wires which are attached to the bottom of each bundle of samples to integrate the flux over the entire vial.  This flux wire references the internal calibration developed from certified reference materials.  The internal standard present is only a check on the analytical results and is not used for calibration.  All samples are rotated while being irradiated to avoid horizontal flux variations.  After counting, approximately 30% of samples are remeasured and checked against the original determinations.  This is done to check anomalous values and check for sample mixups.  International reference materials are frequently run to confirm the calibration.

Instrument: unstated

Sample material: solid

Sample weight: unstated


Analytical Technique:

Hierarchical classification

Technique >> Radiochemical methods >> Activation analysis >> Neutron activation >> INAA

Children

PGNAA | DGNAA


Analytical Decomposition:

Hierarchical classification

Decomposition >> None

Children

None


Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  3182     As_INA  0.5
2  3183     Au_INA  2
3  3184     Ba_INA  50
4  3185     Br_INA  0.5
5  3186     Ca_INA  1
6  3187     Ce_INA  3
7  3188     Co_INA  1
8  3189     Cr_INA  5
9  3190     Cs_INA  1
10  10  3191     Eu_INA  0.2
11  11  3192     Fe_INA  0.01
12  12  3193     Hf_INA  1
13  13  3195     Ir_INA  5
14  14  3196     La_INA  0.5
15  15  3197     Lu_INA  0.05
16  16  3198     Mo_INA  1
17  17  3199     Na_INA  0.01
18  18  3200     Nd_INA  5
19  19  3201     Ni_INA  20
20  20  3448     Rb_INA  5
21  21  3203     Sb_INA  0.1
22  22  3204     Sc_INA  0.1
23  23  3279     Se_INA  5
24  24  3206     Sm_INA  0.1
25  25  3207     Sn_INA  100
26  26  3208     Sr_INA  500
27  27  3209     Ta_INA  0.5
28  28  3210     Tb_INA  0.5
29  29  3211     Th_INA  0.2
30  30  3212     U_INA  0.5
31  31  3213     W_INA  1
32  32  3214     Yb_INA  0.2
33  33  3215     Zn_INA  50
34  34  3216     Wt_INA 

Associated Analytical Packages:

IndexPackage IDPackage Name
1  50     ActLabs INAA + AAS + Hg-CVAAS
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