EPA 1640 Ultra-Trace Metals by ICPMS
Dec
1
Written by:
12/1/2009 4:00 AM
Ultra-Trace Metals by ICPMS
EPA 1640, ug/L
| Analyte |
Preparation |
MRL |
| Aluminum |
Column |
1 |
| Antimony |
Reductive |
0.2 |
| Arsenic |
Column |
0.05 |
| Barium |
Column |
0.2 |
| Beryllium |
Reductive |
0.05 |
| Cadmium |
Column |
0.01 |
| Chromium |
Reductive |
0.3 |
| Cobalt |
Column |
0.01 |
| Copper |
Column |
0.01 |
| Iron |
Column |
1 |
| Lead |
Column |
0.01 |
| Molybdenum |
Column |
0.05 |
| Nickel |
Column |
0.01 |
| Selnium |
Column |
0.1 |
| Silver |
Cobalt |
0.05 |
| Thallium |
Reductive |
0.05 |
| Tin |
Column |
0.05 |
| Titanium |
Column |
0.1 |
| Vanadium |
Column |
0.05 |
| Zinc |
Column |
0.2 |
|
Column - Column Repconcentration
Reductive - Reductive Coprecipitation
Cobalt - Cobalt Coprecipitation
|
Determination of Trace Elements in Water by On-Line Chelation Preconcentration and Inductively Coupled Plasma-Mass Spectrometry. Weck Laboratories has expanded the target metals list from 14 to 20 elements! Three sampl e pre-treatment options within the method employ co-precipitation, reduction or ion exchange pre-concentration. These steps remove the dissolved solids matrix while concentrating the target analytes. This sample preparation significantly reduces interferences and enhances the detection limits. The column preconcentration technique is applicable to most of the elements and employs an iminodiacetate functionalized chelating resin column in an on-line pH buffered system. It is the most efficient option as sample handling is minimal.