英语语法分析

The recent progress in adsorbents for metal ions based on chitosan and its derivates was summarized in this article.

综述了近年来以壳聚糖和壳聚糖衍生物为原料的金属离子吸附剂的研究进展。

This phenomenon was attributed to the difference in specific surface area of the adsorbents and polarity of their networks.

探讨了树脂结构对于吸附性能的影响，发现吸附性能的差别是由树脂的比表面和骨架极性的差异造成的。

Objective: to select one adsorbent that had better adsorption of endotoxin for the animal test from five different adsorbents.

目的：从五种不同类型的吸附剂中筛选出一种对内毒素吸附效果良好者，用于动物实验。