有二句话实在不会翻译了，请求各位帮忙了。？ 求助的时候还是尽量给出上下文，至少说明是关于什么的内容。 1，we have proposed a simple, rapid and versatile preconcentration technique, based on collecting trace analytes on a solvent-soluble filter and dissolving the filter and the analytes collected on it in a small volume of solvent 。 我们已经提出了一个简便，快速，多功能的预富集技术，该技术基于用一个溶剂可溶的滤纸收集痕量的被测组分,用少量的溶剂溶解滤纸及滤纸上富集的被测组分。 2，if the counter cation is excessively hydrophobic, not only the analyte but also the free reagent added to convert the analyte into a collectable form is retained on the filter, sometimes rendering the collection by filtration time consuming。 如果反荷阳离子疏水性太强，除了待测组分，用于将待测组分转化为可富集形态的阳离子试剂也会留在滤纸上，这样有时会在长时间过滤过程中使收集到的组分显色。查看更多
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