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Example sample tables

Example sample tables

 

Use the tables below as inspiration for your own sample table.

An empty, editable MEX1 sample table can be found here

MEX1 transmission samples examples

 

Sample

Sample form

Edge

Analysis mode

Concentration

K max

Environment

Scans

Time/Scan

(hrs)

Total

(hrs)

Sample

Sample form

Edge

Analysis mode

Concentration

K max

Environment

Scans

Time/Scan

(hrs)

Total

(hrs)

W metal (model compound) diluted with cellulose 

7 mm pellet

W L3

T

Δμd= 1.35
μTd = 2.5

XANES only

RT

2

0.25

0.5

Sc2O3 (model compound) diluted with cellulose

7 mm pellet

Sc K

T

Δμd= 0.35
μTd = 1.5

18

RT

2

0.75

1.5

3 x Fe-bearing model compounds diluted with cellulose

7 mm pellet

Fe K

T

Δμd= 0.83 - 1.05
μTd = 1.5 - 2.5

XANES only

cryo

3 x 2 = 6

0.25

1.5

4 x CeO2 catalysts diluted with cellulose

7 mm pellet

Ce L3

T

Δμd= 0.47
μTd = 2.2

16

RT

4 x 2 = 8

0.25

2

16 soil samples diluted with cellulose

7 mm pellet

Fe K

T

Δμd= 0.35 - 0.97
μTd = 1.8 - 2.2

XANES only

RT

16 x 2 = 32

0.5

16

30 wt% Pt0.14Ni0.86 on carbon, diluted with cellulose

7 mm pellet

Ni K

T

Δμd= 0.85
μTd = 1.5

20

cryo

4

1

4

Radiation hardness testing (hrs)

2

Beamline setup and training (hrs)

4

Total time requested

23.5 hours

 (3 shifts)

MEX1 fluorescence sample examples

Sample

Sample form

Edge

Analysis mode

Concentration

K max

Environment

Scans

Time/Scan

(hrs)

Total

(hrs)

Sample

Sample form

Edge

Analysis mode

Concentration

K max

Environment

Scans

Time/Scan

(hrs)

Total

(hrs)

FeS2 diluted with cellulose

7 mm pellet

Fe K

F

32 % w/w, diluted in cellulose to 0.1% = 1000 ppm

18

RT

3

0.5

1.5

Blood samples x 10

Liquid

Hg L3

F

0.1 mM

16

cryo

10 x 6

1

60

Beamline setup and training (hrs)

4

Total time requested

65.5 hours
(9 shifts)

MEX1 simultaneous fluorescence and transmission sample examples

Sample

Sample form

Edge

Analysis mode

K max

Environment

Concentration

Scans

Time/Scan

(hrs)

Total

(hrs)

μTd

Δμd

mass fraction

16 x Soil samples diluted with cellulose

13 mm pellet

Fe K

F & T

XANES only

RT

1.5

 

 

0.154

Fe = 3500 ppm

2 x 16 = 32

0.5

16

Over-absorption characterisation (Grazing exit)

4

Beamline setup and training (hrs)

4

Total time requested

24 hours

(3 shifts)

How to represent measuring different edges in the same sample in the sample table?

Sample

Sample form

Edge

Analysis mode

k max

sample
environment

μTd

Δμd

mass fraction

number of scans

time per scan (minutes)

total time
(hours)

Sample

Sample form

Edge

Analysis mode

k max

sample
environment

μTd

Δμd

mass fraction

number of scans

time per scan (minutes)

total time
(hours)

Yb-doped
ZnFe2O4

7 mm pellet
diluted 30:1
with
cellulose

Yb L3

F

18

RT

-

-

~2200 ppm Yb

3

20 mins

1

Zn K

T

16

1.08

0.19

 

2

9 mins

0.3

Fe K

T

16

2.0

0.5

 

2

9 mins

0.3

  • Merge the sample, sample form and sample environment cells. This makes it obvious to the reader that the samples are linked.

  • You MUST have one row per edge, and it MUST contain either μTd AND Δμd, OR mass fraction OR all three.

  • You calculations for edge step, total absorption and concentration MUST be internally consistent. That means the mass of sample + dilutant must be identical in the calculations for the different edges.

    • In this example a Yb-doped zinc ferrite spinel will be subject to Yb L3, Fe K and Zn K analysis. The dilution ratio of 30 parts cellulose to 1 part sample was chosen such that the Yb concentration was in the vicinity of 2000 ppm, suitable for fluorescence. Various values for total absorption were investigated for the Zn and Fe K-edges, until a pair of values were found that gave an identical mass for the pellet that was in the vicinity of 40 mg, simultaneously producing edge steps for both Fe and Zn were greater than 0.1, and total absorption <2.5.

MEX1 Microprobe sample table example (click here for more information)

Scan type
Details
Sample
Sample Form
Edge: Element(s)
of interest
Scan Dimensions, mm
(horiz. x vert.)
Spot size, mm
Pixel Pitch, mm
(horiz.)
Dwell, sec
Row Pitch, mm
(vert.)
Scan
Time
Nos. Incident
Energies
Nos. scans
TOTAL SCAN TIME
Scan type
Details
Sample
Sample Form
Edge: Element(s)
of interest
Scan Dimensions, mm
(horiz. x vert.)
Spot size, mm
Pixel Pitch, mm
(horiz.)
Dwell, sec
Row Pitch, mm
(vert.)
Scan
Time
Nos. Incident
Energies
Nos. scans
TOTAL SCAN TIME
Map
Coarse (overview) map.
Volcanic sand grains
Petrographic section (30 µm thick)
K-edge: Ti, Fe
3 x 3
0.02
0.1
0.1
0.1
150 mins
1
1
150 mins
Point XANES
Single point XANES on regions identified from the overview scan.
K-edge: Ti
Fixed point
0.02
na
1
na
2 mins
100
10
20 mins
K-edge: Ti
0.02
na
0.5
na
1 mins
120
20
20 mins
XANES map
A small area of the overview scan remapped at a range of incident energies.
K-edge: Fe
0.22 x 0.2
0.005
0.005
0.02
0.005
1 mins
100
4
240 mins
Map
Coarse (overview) map.
Flag leaf, wheat (Triticum aestivum)
Intact, whole leaf
K-edge: K, Ca, Mn, Zn
5 x 2
0.005
0.1
0.25
0.1
4 mins
1
20
85 mins
Map
Higher definition (high detail) map of the stoma identified in the over scans.
0.5 x 0.5
0.005
0.005
0.25
0.02
10 mins
1
36
375 mins
Point XANES
Single point XANES centred on the stoma as identified from the maps.
K-edge: Ca
Fixed point
0.01
na
2
na
4 mins