IEC 62321-10-2020 pdf free download – Determination of certain substances in electrotechnical products – Part 10: Polycyclic aromatic hydrocarbons (PAHs) in polymers and electronics by gas chromatography-mass spectrometry (GC-MS).
This part of lEC 62321 specifies one normative technique for the determination of polycyclicaromatic hydrocarbons (PAHs) in polymers of electrotechnical products. These PAHs canespecially be found in the plastic and rubber parts of a wide range of consumer articles. They
are present as impurities in some of the raw materials used in the production of such articles,in particular in extender oils and in carbon black.They are not added intentionally to the articlesand do not perform any specific function as constituents of the plastic or rubber parts.
The gas chromatography-mass spectrometry(GC-MS) test method is suitable for thedetermination of polycyclic aromatic hydrocarbons (PAHs).
These test methods have been evaluated for use with plastics and rubbers.These test methods
have been evaluated for use with ABS (acrylonitrile butadiene styrene) containing individualPAHs ranging from 37,2 mglkg to 119 mgkg and rubbers containing individual PAHs rangingfrom 1 mg/kg to 221,2 mg/kg.
WARNING – This document does not purport to address all of the safety concerns，if any,associated with its use. lt is the responsibility of the user of this document to establishappropriate safety and health practices and determine the applicability of regulatory limitations
prior to use.
This horizontal standard is primarily intended for use by technical committees in the preparationof standards in accordance with the principles laid down in IEC Guide 108.
One of the responsibilities of a technical committee is，wherever applicable,to make use ofhorizontal standards in the preparation of its publications. The contents of this horizontalstandard will not apply unless specifically referred to or included in the relevant publications.
Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document.For dated references, only the edition cited applies.
For undated references,the latestedition of the referenced document(including anyamendments) applies.
IEC 62321-1:2013,Determination of certain substances in electrotechnical products -Part 1:Introduction and overview
IEC 62321-2,Determination of certain substances in electrotechnical products – Part 2:Disassembly, disjointment and mechanical sample preparation
ISo 3696,Water for analytical laboratory use – Specification and test methods
4 Principle
PAH compounds are quantitatively determined using ultrasonic extraction or Soxhlet extraction followed by gas chromatography-mass spectrometry (GC-MS) using single (or “selected”) ion monitoring (SIM).
5 Reagents and materials
Use, as far as available, reagents of analytical quality, or better. Use only reagents with negligibly low concentrations of PAH and verify by blank determinations and, if necessary, apply additional cleaning steps (for calibrants, see 8.4):
a) Dichloromethane (GC grade or higher).
b) Helium (purity of greater than a volume fraction of 99,999 %).
c) Silica gel (purity of greater than a mass fraction of 99 %).
d) Toluene (GC grade or higher).
NOTE 1 The standards are acceptable when using a quadrupole-type mass spectrometer. A high-resolution mass spectrometer will require the use of other suitable standard substances having a mass and elution time similar to that of the analyte (see 8.4). Other stock solution concentrations can be utilized providing the standard solution concentrations given in 8.5.2 can be achieved.
e) Sodium sulphate (purity of greater than a mass fraction of 99 %).IEC 62321-10 pdf download.