ISO/TS 13899-3:2005 pdf download.Steel - Determination of Mo, Nb and W contents in alloyed steel -Inductively coupled plasma atomic emission spectrometric method — Part 3: Determination of W content.
5 Apparatus
The plastic pipettes and flasks to be used shall be calibrated in accordance with ISO 648 or ISO 1042, as appropriate.
Ordinary laboratory apparatus and
5.1 Atomic emission spectrometer. equipped with an Inductively coupled plasma (ICP) and a nebulizahon system resistant to hydrofluoric acid.
When a polytetrafluoroethylene (PTFE) nebulezer is used, it is recommended that a surface active agent should be added to riprove wetting in the nebulizer and spray chamber. Modem nebulizers are, however. often manufactured of plastic materials with better wetting-characteristics than PTFE and can therefore (as is the case with sapphire nebulizers) be used without a surface active agent.
The ICP•ES spectrometer used will be satisfactory if, after optimising according to 7.2.1 to 7.2.4. it meets the performance cnteria given in 5.1.2 to 5.1.4,
The spectrometer can be either the simultaneous or the sequential type. A sequential type can be used either with or without an internal standard. However, if a sequential spectrometer is to be used with an internal standard, it shall be fitted with an arrangement which allows for the simultaneous measurement of the internal standard line.
5.1.1 Analytical lines
This standard does not specify any particular emission line. It is mandatory that each laboratory carefully investigates the linellines available on its own equipment to find the most suitable one regarding sensitivity and freedom from interferences.
In Table 1. however, a suggestion is given together with possible interferences, The line for the internal standard element should be selected according to 4.7.
The plastic pipettes and flasks to be used shall be calibrated in accordance with ISO 648 or ISO 1042, as appropriate.
Ordinary laboratory apparatus and
5.1 Atomic emission spectrometer. equipped with an Inductively coupled plasma (ICP) and a nebulizahon system resistant to hydrofluoric acid.
When a polytetrafluoroethylene (PTFE) nebulezer is used, it is recommended that a surface active agent should be added to riprove wetting in the nebulizer and spray chamber. Modem nebulizers are, however. often manufactured of plastic materials with better wetting-characteristics than PTFE and can therefore (as is the case with sapphire nebulizers) be used without a surface active agent.
The ICP•ES spectrometer used will be satisfactory if, after optimising according to 7.2.1 to 7.2.4. it meets the performance cnteria given in 5.1.2 to 5.1.4,
The spectrometer can be either the simultaneous or the sequential type. A sequential type can be used either with or without an internal standard. However, if a sequential spectrometer is to be used with an internal standard, it shall be fitted with an arrangement which allows for the simultaneous measurement of the internal standard line.
5.1.1 Analytical lines
This standard does not specify any particular emission line. It is mandatory that each laboratory carefully investigates the linellines available on its own equipment to find the most suitable one regarding sensitivity and freedom from interferences.
In Table 1. however, a suggestion is given together with possible interferences, The line for the internal standard element should be selected according to 4.7.
