An ultrasound bath extraction technique was applied in the modified BCR sequential extraction method for lead speciation in sediments.
研究了超声波水浴提 BCR顺序提取法在铅形态分析中的应用，优化了水系沉积物样品铅的各分步提取时间。
To separate and evaluate heavy metal fractions properly, the proposed sequential extraction method was optimized by single extraction procedure.
采用单一萃取程序对建立的重金属形态连续萃取方法的萃取条件进行优化。
The sequential chemical extraction (SCE) method is used to study the chemical states of heavy metals in industry waste slag in this paper.
介绍了一种分析测定工业废渣中重金属的化学形态的方法：连续化学萃取法。
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