NEWS
The D-Torch also provides the durability of being able to handle
difficult matrices such as HF, high dissolved salts, and organic
solvents without sacrificing analytical performance at both standard
and low flow plasma gas
2% HF Detection Limit
μg/L
2% HNO3 Detection Limit
μg/L
Element (λ) 16 L/min 10 L/min 16 L/min 10 L/min
Al 167 1.18 4.90 1.35 1.54
Ba 455 1.21 3.26 0.23 0.05
Cd 214 0.31 0.16 0.12 0.31
Co 228 0.44 0.16 0.31 0.46
Cr 267 0.52 0.40 0.86 0.93
Cu 221 1.03 1.41 0.78 1.57
K 766 1.08 1.23 0.64 1.30
Mg 279 0.26 0.50 0.53 0.64
Mn 257 0.07 0.16 0.15 0.28
Ni 221 0.97 0.70 0.56 2.59
Pb 220 2.42 1.95 1.77 6.88
Zn 213 0.52 1.74 0.23 0.54
Table 3: Detection limits obtained with a fully ceramic D-Torch at 16L/min and 10L/min.
Figure 4: Stability with HF at plasma gas flow rate of 10L/min with fully ceramic D-Torch.
Conclusions
In summary, the ceramic D-Torch, in comparison to quartz,
provides the analyst with reduced argon consumption, a
more robust plasma, and longer life. The expected lifetime
of the ceramic D-Torch is at least 5 times that of a quartz
torch when dealing with difficult matrices, making the
ceramic D-Torch a cost effective solution to reduce some
of the traditional consumable costs associated with ICP.
Additionally the ceramic D-Torch provides the analyst with
the ability to run the ICP at a reduced plasma gas flow with
no loss in performance.
Reference
i. Thermo Scientific Technical Note #43053,
Radial Demountable Ceramic Torch for the Thermo
Scientific iCAP 6000 Series ICP spectrometer, 2010.
www.geicp.com Glass Expansion Newsletter | Issue 28 | page 3