MPAES WAVELENGTH CALIBRATION

Question

Hi Agilent Team, 
 I did calibrate my new MPAES with an aqueous. But I will use this MPAES mainly for organic analysis. Is it necessary to calibrate my MPAES again with an organic? Or Calibrated with an aqueous is okay for use to analyze organic samples? Will there be any problem MPAES instrument encountered when recalibrating organic matrix? 
 Thank you for feedback.

evanclay · Accepted Answer

Hello Tabubil, 
 Its a yes and no answer. The wavelength calibration does not need to be completed on a daily basis. It is recommended this is performed monthly. So if you have recently performed a wavelength calibration, there is no immediate need to repeat this just because you will now perform analysis of organic solvents. Remember too that the purpose for the wavelength calibration is to map the location of the actual emission wavelengths across the wavelength range to their corresponding region on the detector. This will not change when you run organic solvents. 
 If you were to be running organic solvents regularly from now on, then it would be a good idea to source an organic wavelength calibration standard. This means you do not need to switch between organic and aqueous solutions just to perform this task. 
 Wavelength calibration for organic samples can be completed using a multi-element standard that has these elements present at a minimum concentration of 5 mg/kg in a suitable solvent (such as Agilent A-solv solvent or kerosene): Al, Ba, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Mo, Ni, P, Pb, Sn, Ti, Zn. 
 The most common way to prepare this is to use one of the Agilent A21 Wear metal standards (with or without K) such as those shown below: 5190-8603 A21 wear metal standard, Ag, Al, B, Ba, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Mo, Na, Ni, P, Pb, Si, Sn, Ti, V, Zn 100 &micro;g/g, in 75 cSt hydrocarbon oil, 100 g 5190-8604 A21 wear metal standard, Ag, Al, B, Ba, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Mo, Na, Ni, P, Pb, Si, Sn, Ti, V, Zn 300 &micro;g/g, 100 g 5190-8605 A21 wear metal standard, Ag, Al, B, Ba, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Mo, Na, Ni, P, Pb, Si, Sn, Ti, V, Zn 500 &micro;g/g, 100 g 5190-8706 A21 wear metal standard, Ag, Al, B, Ba, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Mo, Na, Ni, P, Pb, Si, Sn, Ti, V, Zn 900 &micro;g/g, 100 g 
 Hope that helps you, Cheers Eric

MPAES WAVELENGTH CALIBRATION

Top Replies