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GC—MS—SIM法测定茶叶中异稻瘟净残留量

2021-02-22 11:23:52热度:138°C

试样用丙酮-正己烷(体积比1:1)提取,石墨化碳黑固相萃取小柱净化。提取液浓缩后用GC—MS—SIM法测定,外标法定量。茶叶知识的书尖尖的茶叶

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SQL Error: select id,classid,MATCH(title) AGAINST('GC 0110 MS 0110 SIM 23081866 18662208 22081872 18725022 50225448' IN BOOLEAN MODE) as jhc from ***_enewssearchall where (id<>212479) and MATCH(title) AGAINST('GC 0110 MS 0110 SIM 23081866 18662208 22081872 18725022 50225448' IN BOOLEAN MODE) order by jhc desc,infotime desc limit 0, 6