On June 4, 2015, the European Union Gazette (OJ) issued the RoHS 2.0 Amendment Directive (EU) 2015/863, officially listed DEHP, DBP, BBP, and DIBP in the Appendix II List of Restricted Substances. Up to now, there are ten mandatory in Appendix II. Control substances, as shown in the following table:
After the issuance of this revised directive, EU member states are required to approve and issue laws, regulations and administrative regulations that comply with the Directive by December 31, 2016. The relevant provisions shall be implemented from July 22, 2019.
For the organic compounds (DEHP, DBP, BBP, DIBP, PBB and PBDE) in Appendix II, gas chromatography-mass spectrometry is required as the standard detection method.
Instrument introduction
Gas Chromatography-Mass Spectrometry GC-MS 6800
GC-MS 6800 is used for the detection of organic compounds. It has the characteristics of low detection limit, strong qualitative ability and accurate quantitative results. It can be effectively applied to the detection of organic compounds in RoHS 2.0.
Experimental part
Plasticizer (DBP, BBP, DEHP, DIBP) detection method
Sample testing process
Refer to EN14372, ASTM D3421 and other methods. Accurately weigh 2 g of the fully pulverized sample, extract by wire for more than 8 hours, transfer and volatize the solvent, dilute to 25 mL with n-hexane, filter, and test on the machine. The correlation spectrum obtained by the test is as follows:
Sample plus TIC map (blue) and o-benzene mixed TIC map (red)
Polybrominated biphenyls and polybrominated diphenyl ethers
Sample testing process
Refer to methods such as IEC62321 and GB/Z 21276-2007. Accurately weigh 2g of the fully pulverized sample, extract by wire for more than 6 hours, transfer and concentrate to near dryness, purify by silica gel column, concentrate to dryness by rotary evaporation, dilute to 5 mL with toluene, filter, and test on the machine. The correlation spectrum obtained by the test is as follows:
Sample TIC diagram (blue) mixed with polybrominated diphenyl ether TIC (red)
Attachment: Interlaboratory comparison certificate
Appendix 1: Interlaboratory Comparison Certificate (Plasticizer)
Appendix 2: Interlaboratory Comparison Certificate (PBDE)
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