4) sequential extraction method
逐步提取法
1.
The soil polluted by heavy-metal was selected as the soil samples and added NaOH solution,CaO solid,Na2S solution,Na2CO3 solid, C9H7NO solution,and different chemical forms of Pb were extracted with sequential extraction method.
以被重金属污染的农田土壤为样品,分别加入NaOH溶液、CaO固体、Na2S溶液、Na2CO3固体、C9H7NO溶液作为改良剂,采用逐步提取法对土壤中重金属Pb的相态进行浸提和萃取,采用原子吸收光谱法测定提取液中每种形态铅的浓度;最后分析了土壤中Pb在不同的实验环境下的含量。
5) Tessier sequential extraction method
Tessier逐步提取法
6) To make progress; improve.
取得进步;改善
补充资料：取得
1.召唤到。 2.得到。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条