韭菜样本用微波炉加热处理，使酶钝化消除含硫基质干扰，然后用乙腈提取、逆固相分散净化，用反相高效液相色谱-二极管阵列检测器检测。

Then the pretreated samples were extracted with acetonitrile, further cleaned up by reverse solid phase dispersion, and analyzed by reversed phase HPLC with diode array detector (DAD).

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样本用丙酮提取，加二氯甲烷萃取，通过中性氧化铝和活性炭混合柱层析净化，然后上气相色谱用NPD检测。

The procedure was described, including extraction by acetone and dichloromethane, cleaning up by passing through a column made up of neutral alumina and active carbon, determination by GC with NPD.

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样本前处理采取凝胶色谱柱净化方法。

A gel permeation chromatography clean up method was introduced.

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