Analytical Suite Metadata

ActLabs 4Lithores (Zr by ICP-MS) (Cr reported as Cr and Cr2O3)



General Methodology:

4LithoRes - Lithium Metaborate/Tetraborate Fusion - ICP and ICP/MS

A combination of packages Code 4B (lithium metaborate/tetraborate fusion ICP whole rock) and Code 4B2 (trace element ICP/MS).

4B

Samples are prepared and analyzed in a batch system. Each batch contains a method reagent blank, certified reference material and 17% replicates. Samples are mixed with a flux of lithium metaborate and lithium tetraborate and fused in an induction furnace. The molten melt is immediately poured into a solution of 5% nitric acid containing an internal standard, and mixed continuously until completely dissolved (~30 minutes). The samples are run for major oxides and selected trace elements (Code 4B) on a combination simultaneous/sequential Thermo Jarrell-Ash ENVIRO II ICP or a Varian Vista 735 ICP. Calibration is performed using 7 prepared USGS and CANMET certified reference materials. One of the 7 standards is used during the analysis for every group of ten samples.

Totals should be between 98.5% and 101%. If results come out lower, samples are scanned for base metals.  Low reported totals may indicate sulphate being present or other elements like Li which won’t normally be scanned for. Samples with low totals however are automatically re-fused and reanalyzed.

4B2

Samples fused under code 4B2 are diluted and analyzed by Perkin Elmer Sciex ELAN 6000, 6100 or 9000 ICP/MS. Three blanks and five controls (three before the sample group and two after) are analyzed per group of samples. Duplicates are fused and analyzed every 15 samples. Instrument is recalibrated every 40 samples.

 [description retrieved on 2016-02-01 from http://www.actlabs.com/page.aspx?page=517&app=226&cat1=549&tp=12&lk=no&menu=64&print=yes]

Note that ActLabs reports an upper detection limit of 2,000 ppm for arsenic by ICP-MS for this suite.  However, if an analysis is initially greater than 2,000 ppm, the solution may be diluted and re-analysed by ICP-MS, in order to obtain a legitimate value which may be much greater than 2,000 ppm.

Instrument: unstated

Sample material: solid

Sample weight: unstated


Analytical Technique:

Hierarchical classification

Technique >> Other >> ICP-MS/ICP-ES

Children

None


Analytical Decomposition:

Hierarchical classification

Decomposition >> Fusion >> Alkaline >> Borate/tetraborate

Children

LiBO2-Li2B4O7


Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  5479     SiO2_FUS_ICP  0.01
2  5480     Al2O3_FUS_ICP  0.01
3  5481     Cr2O3_FUS_ICP  0.01
4  5494     Fe2O3_T_FUS_ICP 
5  5483     MgO_FUS_ICP  0.01
6  5484     MnO_FUS_ICP  0.001
7  5485     CaO_FUS_ICP  0.01
8  5486     TiO2_FUS_ICP  0.001
9  5487     Na2O_FUS_ICP  0.01
10  10  5488     K2O_FUS_ICP  0.01
11  11  5489     P2O5_FUS_ICP  0.01
12  12  5490     LOI 
13  13  5492     Total 
14  14  5495     Sc_FUS_ICP  1
15  15  5496     Be_FUS_ICP  1
16  16  5497     V_FUS_ICP  5
17  17  5498     Cr_FUS_MS  20
18  18  5499     Co_FUS_MS  1
19  19  5500     Ni_FUS_MS  20
20  20  5501     Cu_FUS_MS  10
21  21  5502     Ga_FUS_MS  1
22  22  5503     Ge_FUS_MS  0.5
23  23  5504     As_FUS_MS  5
24  24  5505     Rb_FUS_MS  1
25  25  5506     Sr_FUS_ICP  2
26  26  5507     Y_FUS_MS  0.5
27  27  5508     Zr_FUS_ICP  1
28  28  5509     Nb_FUS_MS  0.2
29  29  5510     Mo_FUS_MS  2
30  30  5511     Ag_FUS_MS  0.5
31  31  5512     In_FUS_MS  0.1
32  32  5513     Sn_FUS_MS  1
33  33  5514     Sb_FUS_MS  0.2
34  34  5515     Cs_FUS_MS  0.1
35  35  5516     Ba_FUS_ICP  3
36  36  5517     Bi_FUS_MS  0.1
37  37  5518     La_FUS_MS  0.05
38  38  5519     Ce_FUS_MS  0.05
39  39  5520     Pr_FUS_MS  0.01
40  40  5521     Nd_FUS_MS  0.05
41  41  5522     Sm_FUS_MS  0.01
42  42  5523     Eu_FUS_MS  0.005
43  43  5524     Gd_FUS_MS  0.01
44  44  5525     Tb_FUS_MS  0.01
45  45  5526     Dy_FUS_MS  0.01
46  46  5527     Ho_FUS_MS  0.01
47  47  5528     Er_FUS_MS  0.01
48  48  5529     Tm_FUS_MS  0.005
49  49  5530     Yb_FUS_MS  0.01
50  50  5531     Lu_FUS_MS  0.002
51  51  5532     Hf_FUS_MS  0.1
52  52  5533     Ta_FUS_MS  0.01
53  53  5534     W_FUS_MS  0.5
54  54  5535     Tl_FUS_MS  0.05
55  55  5536     Pb_FUS_MS  5
56  56  5537     Th_FUS_MS  0.05
57  57  5538     U_FUS_MS  0.01

Associated Analytical Packages:

IndexPackage IDPackage Name
1  296     ActLabs GSC TGI4 whole rock analysis (variant #1)
2  297     ActLabs GSC TGI4 whole rock analysis (variant #2)
Date modified: