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Bondar Clegg (lake sediment) INAA - flux 1x10**11, counting 15 min  (33 elements +Au + Wt)



Bondar Clegg, lake sediment; Instrumental Neutron Activation Analysis (Na, Sc, Cr, Fe, Co, Ni, Zn, As, Se, Br, Rb, Zr, Mo, Ag, Cd, Sn, Sb, Te, Cs, Ba, La, Ce, Sm, Eu, Tb, Yb, Lu, Hf, Ta, W, Ir, Th, U, Au, Wt) –  flux 1x10**11, counting approximately 15 minutes

General Methodology:

The weighed sample (up to 40g) is irradiated epithermally for 20 minutes in a neutron flux with an approximate density of 1x10*11 neutrons/sq cm/second. Counting begins seven days after irradiation. The counting time is somewhat variable (approximately 15 minutes) and is matrix dependent. Counting is done on a germanium-lithium co-axial counter.  The counting data is accumulated on a VAX computer and is subsequently converted to concentrations.  Numerous international reference samples are irradiated with each batch of routine samples.  Elements determined by INAA include:

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  2241     Na_INA  0.02
2  2242     Sc_INA  0.2
3  2243     Cr_INA  20
4  2244     Fe_INA  0.2
5  2245     Co_INA  5
6  2246     Ni_INA  10
7  2247     Zn_INA  100
8  2248     As_INA  0.5
9  2249     Se_INA  5
10  10  2250     Br_INA  0.5
11  11  2251     Rb_INA  5
12  12  2252     Zr_INA  200
13  13  2253     Mo_INA  1
14  14  2254     Ag_INA  2
15  15  2255     Cd_INA  5
16  16  2256     Sn_INA  100
17  17  2257     Sb_INA  0.1
18  18  2258     Te_INA  10
19  19  2259     Cs_INA  0.5
20  20  2260     Ba_INA  50
21  21  2261     La_INA  2
22  22  2262     Ce_INA  5
23  23  2263     Sm_INA  0.01
24  24  2264     Eu_INA  1
25  25  2265     Tb_INA  0.5
26  26  2266     Yb_INA  2
27  27  2267     Lu_INA  0.2
28  28  2268     Hf_INA  1
29  29  2269     Ta_INA  0.5
30  30  2270     W_INA  1
31  31  2271     Ir_INA  50
32  32  2272     Au_INA  2
33  33  2273     Th_INA  0.2
34  34  2274     U_INA  0.2
35  35  2275     Wt_INA 

Associated Analytical Packages:

IndexPackage IDPackage Name
1  443     Bondar Clegg / Becquerel (NGR lake sediment) INAA-flux 1x10**11, counting 15 min (33 elements, Au + Wt)
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