261 / 363
Table 2015.18G. Final ICP-OES conditions utilized for acid-soluble or “total” P and K validation
Factor
Setting
Power, kW
1.15
a
Plasma flow, L/min
15
Auxiliary flow, L/min
1.5
Nebulizer pressure, L/min
0.40
Nebulizer type
V-grove
Spray chamber
Scott’s (baffled)
Sample pump tube
Orange/white (id = 0.64 mm)
Buffer/internal standard pump tube
Orange/white (id = 0.64 mm)
CsCl concentration, M
0.035
Internal standard and concn, µg/mL
6
Buffer matrix
2% nitric acid
Exposure length, s
10
Number of exposures
3
Rinse time, s
30
Total analysis time, min
2.4
a
A power of 1.20 kW is required for a Thermo 6500 radial vie w.
Candidates for 2016 Method of the Year
260