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Case Studies - Trace
Metal Analysis
UltraPure Silica Gel with UltraLow Trace Metal Content
Silica gel normally contains trace quantities of a variety of different
metals, which can effect the separation. Lead is particularly
problematic and causes peaks to tail. SiliCycle’s proprietary technology
generates a silica gel with the lowest trace metal content on the
market today. Table 1 shows the trace metal analysis for SiliCycle’s
gel and two other manufacturer’s flash silica gel. Our
low trace metal content ensures you get optimal performance from
your
chromatography. Tight control of trace metals lot to lot also
improves your reproducibility.
| Metals |
SiliCycle |
Type A |
Type B |
| Aluminum |
33 |
262 |
280 |
| Barium |
9.4 |
59.7 |
32.5 |
| Calcium |
336 |
1150 |
502 |
| Chromium |
0.5 |
0.6 |
0.4 |
| Copper |
0.2 |
0.2 |
0.2 |
| Iron |
32 |
75 |
41 |
| Lead |
0.41 |
5.24 |
0.95 |
| Magnesium |
61 |
149 |
104 |
| Nickel |
0.4 |
0.5 |
0.5 |
| Silver |
0.09 |
0.29 |
0.19 |
| Sodium |
466 |
945 |
585 |
| Tin |
0.2 |
0.2 |
0.1 |
| Titanium |
147 |
250 |
179 |
| Zinc |
1 |
1 |
2 |
| Zirconium |
32 |
75 |
56 |
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| Table 1: |
Trace metal profile for flash silica gel
from three different suppiliers.
All values are ppm. |
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