样品用1%乙酸-乙腈溶液提取，NH 2吸附剂净化，正己烷脱脂。
The samples were extracted with 1% acetic acid-acetonitrile solution, cleaned up with amine (NH2) sorbent and defatted with n-hexane.
样品用1%乙酸-乙腈溶液提取，NH 2吸附剂净化，正己烷脱脂。
The samples were extracted with 1% acetic acid-acetonitrile solution, cleaned up with amine (NH2) sorbent and defatted with n-hexane.
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