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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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