碱性多糖吸附剂对血脂吸附行为的X-射线光电子能谱分析

X－ray photoelectron spectroscopy analysis on the adsorbing behaviors of natural alkalescent polysaccharide adsorbent for blood lipid

利用XPS技术探讨一种天然碱性多糖吸附剂对血清中血脂的吸附行为。吸附剂用碱性多糖制备吸附液为血清、胆固醇CHO和甘油三酯TG标准液。分别将吸附血脂、CHO和TG的样品与未吸附样品的X－射线光电子谱图比较，根据碳、氧、氮三种元素光电子结合能变化，找出对吸附血脂分子起主要作用的活性基团。血清、CHO和TG标准液三种吸附样品谱图显示，谱峰在398．9eV处的－NH2发生了化学位移。CHO和TG标准液二种吸附样品谱图显示，谱峰在532．4eV处的－OH发生了化学位移。试验表明吸附剂分子链上的－NH2是吸附血清中血脂分子的活性中心。

In this paperthe adsorbing behaviors of natural alkalescent polysaccharide for the blood fat in the serum is discussedserumcholesterolCHO and triglycerideTG titer being the adsorbate． Active group for the absorption can be found according to the changes of photoelectron binding energy of carbonoxygen and nitrogen by comparing the X－ray photoelectron spectroscopiesXPSs of the samples absorbing titers with that of original sample．－NH2 with peak value at 398．9eV generates chemical shift according to the XPSs of the samples adsorbing serumCHO and TGand the same to －OH with peak value at 5234eV according to the XPSs of the samples adsorbing CHO and TG．And the －NH2 group on the molecule chain of adsorbent is the active center to adsorb the blood lipid．