Metrohm 797 VA Computrace User Manual
797 va computrace
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Table of contents
Document Outline
- 1 Introduction
- 2 Main window
- 3 General settings for exploratory and determination mode
- 3.1 Electrodes
- 3.2 VA measurement modes
- DP – Differential Pulse
- SqW – Square Wave
- DC – Sampled Direct Current
- NP – Normal Pulse (for "Exploratory" only)
- CV – Cyclic Voltammetry
- PSA – Potentiometric Stripping Analysis
- CCPSA – Constant Current Potentiometric Stripping Analysis
- AC – Alternating Current Voltammetry
- CVS - Cyclic Voltammetric Stripping
- CPVS - Cyclic Pulse Voltammetric Stripping
- 3.3 Potentiostat
- 3.4 General operation sequence
- 3.5 Graphical settings
- 4 Exploratory mode
- 5 Determination mode
- 5.1 Determination mode overview
- 5.2 Working method specifications
- 5.3 Monitor
- 5.4 Determination curves
- Load/save determinations
- Copy parameters to working method
- Determination curves window
- Edit determination method parameters
- Specifications
- Determination
- Voltammetric
- Substances
- Calculations
- Export
- Edit addition parameters
- Edit baseline
- Zooming
- Auto scaling
- Swap axis
- Show baselines
- Show unknown peaks
- Show spikes
- Graphical properties for determination curves
- Graphical properties for calibration curves
- Copy/export graphics
- 5.5 Results
- 5.6 Sample table
- 5.7 Printing in determination mode
- Data processing and evaluation
- Data transfer
- Data acquisition
- Background compensation
- Smoothing and differentiation
- Peak recognition
- Baseline calculation
- Evaluation quantity calculation
- Content calculation
- Dilution calculation
- Standard addition calculation
- Rules for standard addition
- Calibration curve calculation
- Rules for calibration curves
- Formula calculation
- 6 Electroplating Bath VA
- 6.1 Electroplating Bath VA – Introduction
- 6.2 Calibration techniques with CVS and CPVS
- 6.3 Different settings and options with CVS and CPVS
- 6.4 Some Definitions used with CVS and CPVS
- 7 Manual control
- 8 How to ...?
- 8.1 Installation and program start
- 8.2 User rights
- 8.3 Signals in exploratory mode
- 8.4 Methods in determination mode
- 8.5 Determinations with voltammetric trace analysis
- Load a determination
- Save a determination
- Automatically save determinations
- Perform a determination
- Perform a test determination with the Pb test method
- Perform determinations using the 863 Compact VA Autosampler
- Perform VA determinations using the 838 Advanced Sample Processor
- 838 method for trace analysis
- Recalculate an existing determination
- Print determination results and curves
- 8.6 Analyze Electroplating Bath Solutions
- Introduction
- Choose the mode in Electroplating Bath VA
- Choose the Calibration technique in Electroplating Bath VA
- Operate a sequence in Electroplating Bath VA
- Brightener Analysis with 838 Advanced Sample Processor and "MLAT"
- Brightener Analysis with 838 Advanced Sample Processor and "LAT"
- Suppressor Analysis with 838 Advanced Sample Processor and DT
- Suppressor Analysis with 838 Advanced Sample Processor and RC
- 8.7 Standard addition technique
- 8.8 Calibration curve technique
- 8.9 Work with film electrodes
- 8.10 Diagnostic procedures
- 9 Troubleshooting
- 9.1 General procedure for error messages
- 9.2 Connection problems
- 9.3 Software problems
- 9.4 Dosing Device problems
- 9.5 General rules for VA trace analysis
- 9.6 Voltammetric problems
- Low background current or unstable baseline
- Curves with high noise
- SqW Problems
- Standard addition curves are not reproducible
- Peak displacement
- No peak found
- Peak is in the highest (A range
- Double peak
- Standard addition peaks displaced
- No addition
- Spikes / signal jump in voltammogram
- Oxygen interference
- Unsuitable bridging electrolyte in the reference electrode
- Overloading of the working electrode
- Disturbances at the HMDE through gas formation
- Complex formation
- Peak on highly curved baseline
- Peak overlapping
- Calibration with chemically non-isoformal standards
- Results not reproducible
- Software license
- Declaration of conformity – Software validation
- Index