Hodge Evangeline M
Los Alamos National Laboratory, E518, Los Alamos, NM 87545, USA.
J Chromatogr A. 2003 May 16;997(1-2):243-7. doi: 10.1016/s0021-9673(03)00629-0.
Waste management programs at the Radioactive Liquid Waste Treatment Facility (RLWTF) at the Los Alamos National Laboratory (LANL) are concerned with the levels of perchlorates due to the effects it can have on the environment and resultant regulations. The RLWTF treats industrial and radioactive wastes generated at multiple research and production facilities across the LANL. Perchloric acid is the major source of the perchlorate ion in the RLWTF used in the analytical chemistry laboratories and for metal dissolution. Perchlorate is present in the influent to the RLWTF at concentrations up to several thousands microg/l level. Ion chromatography is the method of choice to analyze the concentrations of perchlorate in the wastewater generated at the RLWTF. Perchlorate was separated by elution through a CS16/CG16 with an EG40 eluent generator. To minimize background conductivity and enhance analyte conductance, an anion self-regenerating suppressor was used. The method achieved a perchlorate method detection limit of 1 microg/l. The method is successfully being used to monitor the perchlorate levels at the RLWTF and provide data for the pilot tests to remove perchlorate from the RLWTF effluent.
洛斯阿拉莫斯国家实验室（LANL）的放射性液体废物处理设施（RLWTF）的废物管理项目关注高氯酸盐的含量，因为其会对环境产生影响并导致相关法规的出台。RLWTF处理LANL多个研究和生产设施产生的工业和放射性废物。高氯酸是分析化学实验室和金属溶解过程中RLWTF使用的高氯酸根离子的主要来源。高氯酸盐在进入RLWTF的废水中的浓度高达数千微克/升。离子色谱法是分析RLWTF产生的废水中高氯酸盐浓度的首选方法。通过使用EG40淋洗液发生器，以CS16/CG16进行洗脱来分离高氯酸盐。为了最小化背景电导率并增强分析物的电导率，使用了阴离子自再生抑制器。该方法实现了1微克/升的高氯酸盐方法检测限。该方法已成功用于监测RLWTF的高氯酸盐含量，并为从RLWTF流出物中去除高氯酸盐的中试试验提供数据。
