This application note describes the capability of the Teledyne Leeman Lab's Prodigy7 High-Dispersion ICP for performing analysis
according to SW-846 Method 6010C. This method is applicable to groundwaters, Toxicity Characteristic Leaching Procedure (TCLP)
and Extraction Procedure (EP), industrial organic wastes, soils, sludge, and sediments.
As with other US EPA mandated methods, Method 6010C requires adherence to specific procedures to ensure analytical quality
A Prodigy7 inductively coupled plasma (ICP) spectrometer equipped with a radial view torch and a 240-position CETAC ASX-520
autosampler was used to generate the data.
The Prodigy7 is a compact benchtop simultaneous ICP-OES system featuring a 500 mm focal length Echelle Optical System coupled
with a megapixel CMOS Detector. At 28 × 28 mm, the active area of the CMOS Detector is significantly larger than any other
solid-state detector currently used for ICP-OES. This combination allows Prodigy7 to achieve higher optical resolution than
other solid-state detector based ICP systems. The detector also provides continuous wavelength coverage from 165 to 1100 nm
permitting measurement over the entire ICP spectrum in a single reading without sacrificing wavelength range or resolution.
This detector design is inherently anti-blooming and is capable of random access, nondestructive readout that results in a
dynamic range of more than six orders of magnitude.
The sample introduction system consists of:
- Cyclonic spray chamber
- Seaspray™ concentric nebulizer
- Four-channel peristaltic pump
The volume of cyclonic spray chamber is low to allow for fast washout between samples, while its knockout tube or baffle,
efficiently reduces the amount of sample aerosol reaching the torch.
The torch and sample introduction system are uniquely integrated into the optical system through Prodigy7's innovative Image
Stabilization System, which treats the torch as an optical component by rigidly attaching it to the spectrometer.
The initial performance parameters measured for this application note were determined as specified in Method 6010C. All samples
were analyzed using the Prodigy7 equipped with a radially viewed torch.
Method 6010C requires that the upper limit of the linear dynamic range (LDR) be established. This is accomplished by analyzing
increasingly higher concentration analyte standards. The LDR is considered exceeded when the measured concentration is more
than 10% below the true concentration. The upper limit of the LDR must be established for each wavelength utilized by determining
the signal responses from a minimum of three different concentration standards across the range. The ranges that may be used
for the analysis of samples should be judged by the analyst from the resulting data. A standard at the upper limit must be
prepared, analyzed, and quantitated against the normal calibration curve. The calculated value must be within 10% (±10%) of
the true value.
The types of samples analyzed under the scope of Method 6010C may exhibit considerable spectral complexity. As a result, interferences
due to spectral overlaps may be observed. When present and uncorrected, these interferences will produce biased determinations.
For this study, checks are performed for the major matrix elements, Al, Ca, Fe, Mg, Si, and P on the other analyte elements.
This is done using single element solutions. Once the interferences are identified, the Prodigy7 will automatically calculate
the interfering element correction factors.
Sample Analysis Results
A certified water sample, ERA WatR™ Pollution Trace Metals, Lot P213-500, and four certified soil samples were prepared and
analyzed: ERA Metals in SewageSludG™ , Lot. D078-160 (Environmental Resource Associates, Arvada, Colorado) and Standard Reference
Materials (SRM) 2709, 2710, 2710 (NIST, Gaithersburg, Maryland).
The Prodigy7 ICP readily accommodated all of the soil samples for analysis. Examination of the data indicates the results
for all elements lie well within the performance acceptance limits (PAL) for the ERA soil or the range specified for the NIST
SRM soils. The results demonstrate excellent precision, as indicated by the low relative standard deviation (RSD) data, indicating
the Prodigy7 is operating well above the detection limit (DL) and limit of quantitation (LOQ) for the elements determined.
For the full application note visit: http://web.teledyneleemanlabs.com/spectroscopyAN1305.
Teledyne Leeman Labs
6 Wentworth Drive , Hudson, NH 03051
tel. (603) 886-8400, fax 603-886-9141