Agilent 700 Series ICP-OES Maintenance Tips & Tricks
Contents
1. Agilent 700 Series ICP OES Maintenance Tips amp Tricks The Meafsure of Confidence F Agilent Technologies Maintenance Checklist 1 Daily e Inspect nebulizer torch e Inspect pump tubing e Empty drain vessel Weekly e Clean torch e Inspect cone axial or snout radial e Inspect bonnet radial The Measure of Confidence 2 2 Agilent Technologies Maintenance Checklist 2 Monthly Clean spraychamber Clean nebulizer Inspect the state of induction coll Verify that the water level in water recirculator is sufficient If low add more water Do not add more Chloramine T without flushing out the recirculator Clean check air filter on top of ICP OES behind chimney The Measure of Confidence 2 2 Agilent Technologies Nebulizer Cleaning Concentric Glass High sensitivity nebulizer e Soak in Aqua Regia e Back flush with water or vacuum NEVER sonicate e Inner capillary may shatter or crack This is NOT always visually apparent The Measure of Confidence 2 2 Agilent Technologies Wavelength Calibration using S21 Agilent ICP OES can be calibrated using S21 Oil standard e Perform dark current scan wavelength calibration monthly ICP Expert software Go to Supplied Worksheets directory 2 Rename worksheet wavelength calibration vws to wavelength calibration aqueous vws 3 Rename worksheet S27 organic matrix wavelength calibration vw2. drift or noise related e Check the nebulizer for blockage e Check the torch and injector tube e Check the pump and pump tubing The Measure of Confidence 2 2 Agilent Technologies Summary Frequently degradation of results is due to problems associated with the sample introduction area rather than the instrument itself e Check plasma with Y solution e Maintain the system e Check wavelength calibration e Monitor intensity of calibrations within a worksheet The Measure of Confidence 2 2 Agilent Technologies
3. Radial normal analytical zone should be 3 mm to 16 mm above the coil e Axial normal analytical zone should extend to the cooled cone e The orange plasma tail should be fanned around the cone orifice The Measure of Confidence 2 2 Agilent Technologies Plasma lonization Zones Plasma Tail 25 Sas 20 Viewing height above Normal Analytical load coil in mm s 15 Zone Initial Radiation Zone Induction Zone Preheating Zone The Meafsure of Confidence Radial Plasma Central Channel Fireball The Meafsure of Confidence Central Channel Fireball Viewed volume Troubleshooting 3 Low analytical signal e Standards prepared incorrectly Blocked nebulizer or low nebulizer gas flow e Blocked injector e Bad pump tubing e Conditions not optimized The Measure of Confidence 2 2 Agilent Technologies Troubleshooting 4 U gt Instrument Setup olx i eel enn i e a r It S a good idea to keep a Status Details W LCalb Echelle Ignition Torch Align Autosampier Log Scan Method Scan log of the intensities BRATIWARENWSTASUPPLT TachAignnertwws Bowe Fie ue SRBR Overlay Torch Scan whenever you run the hema mAnmantnrnnram a a a Cte S Torch Alignment program C Vertical 30 3 0 Vertical 40 Horizontal Scan Mn 257 610 Scale The Measure of Confidence Troubleshooting 5 Poor precision e Determine if it is
4. lution 1 10 Select VERTICAL box in software Method scans for Mn at 257 610 nm The Measure of Confidence 2 2 Agilent Technologies Spraychamber Cleaning Glass Cyclonic Cleaning required when the sample aerosol begins to BEAD UP on the spraychamber walls e Remove spraychamber from instrument e Soak in aqua regia rinse and replace e NOTE Sonication may damage glass spraychamber Place in a small beaker BEFORE starting the sonicator The Measure of Confidence 2 2 Agilent Technologies Water Cooling System Set thermostat at 21 25 C Check correct water level e Fill with DI water only not gt 18 m ohms Prevent growth of aerobic bacteria by adding Chloramine T Trihydrate e Only when water is changed e Add 1 gram for each liter of water used 0 1 e Read owner s service manual The Measure of Confidence 2 2 Agilent Technologies Troubleshooting 1 90 of all ICP OES related problems are in the sample introduction area There are common procedures available to indicate if there is a sample introduction problem The Measure of Confidence 2 2 Agilent Technologies Troubleshooting 2 Diagnose Sample Introduction Problems Using Yttrium e Red bullet should not pulsate Radial Bullet should be 1mm above top of torch Axial Bullet should be between second and third coils The blue portion of the plasma represents the NORMAL analytical zone and should be clearly visible e
5. s to wavelength calibration vws ICP Expert II software 1 From within the Wavelength Calibration page select Browse and locate the S21 method within the Supplied Worksheets The Measure of Confidence 2 Agilent Technologies Weekly Torch Maintenance Inspect Torch for Cracks or Deformations e Replace damaged torches Inspect injector tube for sample buildup Inspect outer tube for deposits The Measure of Confidence 2 2 Agilent Technologies Inspect bonnet for cracks e Remove bonnet to clean Films Arcing residue Sample buildup e Soak in aqua regia 3 1 HCI HNO Inspect snout e Remove any solid build up from inside the snout by washing with a dilute detergent solution Triton X 100 or similar detergent e Remove traces of detergent by flushing the snout with DI water Cleaning Torch Rinse the torch with clean water to remove salt deposits and allow to dry before use To remove other deposits or stains e Soak in aqua regia 3 1 HCI HNO overnight e Rinse well with water and allow to dry before use e Use a pipe cleaner dipped in aqua regia to remove persistent compounds from the injector tube 2 HF can be used to remove stubborn stains e Will weaken the torch over time The Measure of Confidence 2 2 Agilent Technologies Periodic Torch Maintenance 2 Devitrification Cleaning radial ICP only Soak in 2 HF Acid e Monitor every 5 minutes e Rinse and Dr
6. y Torch for axial ICP will exhibit devitrification after first use e DO NOT spend time cleaning e Monitor for cracks The Measure of Confidence 2 2 Agilent Technologies Torch Alignment 1 Must be Concentric within Coil e Uneven RF can cause Torch Meltdown e Arcing between Plasma amp Coil The Meafsure of Confidence Replacing Radial Torch Position the top of the torch intermediate tube at least 2 mm below the induction coil Arcing may occur if too low EJ 3 mm e Torch Meltdown or Plasma Ignition Failure if too high The Measure of Confidence 2 2 Agilent Technologies Replacing Axial Torch Align the torch horizontally by positioning it so that the intermediate tube of the torch is approximately 3 mm to the left of the left end of the induction coil 3 5 mm The Meafsure of Confidence 25 Agilent Technologies Horizontal Torch Alignment 4 Perform after Radial or Axial torch removal replacement e 1 5mm from center e Goto Torch Alignment page in Instrument Module e Select TORCH method provided with the software e Use the provided tuning solution 1 10 e Method scans for Mn at 257 610 nm 3mm Top View of Torch 0 mm 3 mm The Measure of Confidence 2 2 Agilent Technologies Vertical Torch Alignment Perform after AXIAL torch removal replacement Go to Torch Alignment page in Instrument Module Select TORCH method provided with the software Use the provided tuning so
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