1J2B|1|A|MG|601 MG ion 1J2B|1|B|MG|602 MG ion 1J2B|1|B|MG|1601 MG ion 1J2B|1|C|MG|1602 MG ion 1J2B|1|A|ZN|600 ZN ion 1J2B|1|B|ZN|600 ZN ion