Table T5. XRF operating conditions for sediment trace elements.
| Element | Line | Crystal | Detector | Collimator | Peak angle (° ) |
Background
offset (° 2  ) |
Total count time | |
|---|---|---|---|---|---|---|---|---|
| Peak (s) |
Background (s) |
|||||||
Rh |
  -Compton |
LIF(200) |
Scint |
Fine |
18.20 |
0.00 |
60 |
0 |
Nb |
|
LIF(200) |
Scint |
Fine |
21.40 |
-0.35 |
200 |
200 |
Zr |
|
LIF(200) |
Scint |
Fine |
22.55 |
-0.35 |
100 |
100 |
Y |
|
LIF(200) |
Scint |
Fine |
23.80 |
-0.40 |
100 |
100 |
Sr |
|
LIF(200) |
Scint |
Fine |
25.15 |
-0.40 |
100 |
100 |
Rb |
|
LIF(200) |
Scint |
Fine |
26.62 |
-0.60 |
100 |
100 |
Zn |
|
LIF(200) |
Scint |
Medium |
41.81 |
-0.40 |
100 |
100 |
Cu |
|
LIF(200) |
Scint |
Fine |
45.03 |
-0.40 |
100 |
100 |
Ni |
|
LIF(200) |
Scint |
Medium |
48.67 |
-0.60 |
100 |
100 |
Fe |
|
LIF(200) |
FPC |
Fine |
85.65 |
0.00 |
100 |
0 |
Cr |
|
LIF(200) |
FPC |
Fine |
69.35 |
-0.50 |
100 |
100 |
Ti |
|
LIF(200) |
FPC |
Fine |
86.18 |
0.00 |
40 |
0 |
V |
|
LIF(200) |
FPC |
Fine |
123.06 |
-0.50 |
100 |
100 |
Ce |
|
LIF(200) |
FPC |
Medium |
128.13 |
1.50 |
100 |
100 |
Ba |
L  |
LIF(200) |
FPC |
Medium |
128.78 |
1.50 |
100 |
100 |
Note: Detectors: Scint = NaI scintillation counter, FPC = flow proportional counter using P10 gas. Trace elements analyzed under vacuum using generator setting of 50 kV and 50 mA.