梯度淋洗法在雪冰样品有机酸测试分析中的应用  

Organic Acid in Snow and Ice Determined with Gradient Elution

作　　者：崔晓庆[1] 任贾文[1] 刘伟刚[1] 王晓香[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所冰冻圈与环境联合重点实验室,甘肃兰州730000

出　　处：《冰川冻土》2006年第3期360-363,共4页Journal of Glaciology and Geocryology

基　　金：中国科学院知识创新工程重要方向项目(KZCX3-SW-354);科技部国际合作重点项目(2001CB711003)资助

摘　　要：离子色谱法是分析有机酸的有效方法之一,而梯度淋洗可一次分离与固定相亲合力差异较大的多种有机酸和无机阴离子,改善离子的色谱峰形,提高分离度和选择性.雪冰是记录有机酸的良好载体,对雪冰中有机酸的研究可认识过去大气中相应化合物含量及其变化,从而恢复过去生态环境和气候变化.利用Dx-600离子色谱仪及外加水梯度洗脱程序对南极雪冰样品中的有机酸离子组分进行了测试和分析,初步探讨雪冰中有机酸离子特征及其对雪冰化学记录的影响.The Ion-chromatography method is a widely used analytical method for organic acids. Gradient elution can separate at once the organic acids and inorganic anions, improve the ion＇s kurtosis and raise the separation degree and selectivity. Records of organic acids are saved in snow and ice very well. Research of organic acids in snow and ice enables us to learn the changes of paleoeatmosphere components and then to recover the paleoenvironment and paleoecosystem. Using of Dx- 600 Ion-chromatography and gradient elution, the organic acid ion of snow and ice samples collected from Antarctica is determined and analyzed, and the characteristics of the organic acid ion and its influence on snow ice chemistry record are discussed.

关 键 词：离子色谱 有机酸 雪冰 梯度淋洗 

分 类 号：P343.6[天文地球—水文科学]