结果表明：添加壳聚糖后胶原海绵的孔隙率和吸水率下降，添加硫酸软骨素后上升，而添加肝素后无明显变化。
The results showed that the porosity and water capacity of collagen sponges decrease by adding chitosan, increase by adding chondroitin sulfate, but no effect by heparin.
肝素是一种高度硫酸化的蛋白聚糖，兼有很强的抗凝血活性和抗炎症活性。
Heparin, a highly sulfated proteoglycan, is known to have strong anticoagulant and anti-inflammatory activities.
结论：本文实验方法可以用于肝素类样品游离和结合硫酸根的测定。
Conclusion: This HPAEC method could be used to determine the content of free and linked sulfate of heparin-like materials.
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