Not sure if you have the halogenated rubber oligomers in your samples? Match the deconvoluted spectra with Vit-n-Vivo’s mass spectral library of rubber oligomers.
First, download the compressed Vit-n-Vivo’s mass spectral library of rubber oligomers and extract it into the NIST14\MSSEARCH\ folder. The library is in NIST format and contains mass spectra of seven rubber oligomers:
1,1,5,5-tetramethyl-2-(prop-1-en-2-yl)cyclohexane; C13H24 (CAS: 63251-38-7)
1,1,5,5-Tetramethyl-2-(1-methylethenyl)-3-(2,2,4-trimethylpentyl)cyclohexane; C21H40 (CAS: 2512216-71-4)
2-(1-(chloromethyl)ethenyl)-1,1,5,5-tetramethylcyclohexane; C13H23Cl (CAS: 63216-72-8)
2-(1-(bromomethy)lethenyl)-1,1,5,5-tetramethylcyclohexane; C13H23Br (CAS: 2514965-51-4)
2-[1-(bromomethyl)ethenyl]-1,1,5,5-tetramethyl-3-(2,2,4-trimethylpentyl)cyclohexane; C21H39Br-main isomer (CAS: 2518227-14-8)
2-[(1E)-1-bromoprop-1-en-2-yl]]-1,1,5,5-tetramethyl-3-(2,2,4-trimethylpentyl)cyclohexane; C21H39Br-E isomer
2-[(1Z)-1-bromoprop-1-en-2-yl]]-1,1,5,5-tetramethyl-3-(2,2,4-trimethylpentyl)cyclohexane; C21H39Br-Z isomer.
Second, include Vit-n-Vivo’s library in the Library spectrum Search.
Library Search Options Libraries tab.
Third, perform NIST MS Search to check if your samples contain rubber oligomers.
