iCAP 6500 Duo ICP适用于EPA 200.7方法要求
abstract：
This Application Note describes the use of the Thermo Scientific iCAP 6500 Duo for the analysis of waters using the US EPA method 200.7。
instrument：
Thermo Scientific iCAP 6500 Duo ICP
Conclusions：
The iCAP 6500 Duo ICP demonstrated compliance with the requirements of EPA Method 200.7 for a wide range of water sample types and showed that it easily coped with the stringent AQC requirements of the method. A combination of specifically designed hardware and software tools enable and simplify compliant analysis as outlined below.
Wavelength calibration is quick and easy with the autopeak function and method and instrument optimization are automatically performed with the built-in optimization procedures. Along with the high transmission optical design and sensitive CID-86 detector, this helps to produce the optimum in performance, as indicated by the excellent method etection limits obtained.
The lack of physical and spectral interference in environmental samples, demonstrated in the interference study, makes the iCAP ideal for analyzing waters and other environmental materials. This yields accurate results for all environmental sample types.
Careful attention was paid to the thermal conductivity of the instrument during the design phase. This has produced an extremely stable system that continues to give good accuracy over long periods of time without frequent re-calibration and also produces good precision over extended runs. This is demonstrated by the consistent IPC results.
The iTEVA software has a built-in QC checking capability that is designed to meet the requirements of EPA methods. The package also includes monitored uptake / washout features. This reduces the amount of non-productive time and maximizes useful analytical time.
The productivity tools in iTEVA in combination with the speed of the iCAP and the low-volume sample introduction system result in rapid analysis times. Samples in this study were being processed at a speed of 1 sample every 3 minutes and 30 seconds, or 17 samples per hour. This makes the iCAP the ultimate ICP for cost-effective elemental analysis。
