高效液相色谱测定水中痕量亚硝基二甲胺  

Determination of Trace Nitrosodimethylamine in Water by High Performance Liquid Chromatogram

作　　者：陈忠林[1] 徐冰冰[1] 齐虹[1] 齐飞[1] 沈吉敏[1] 杨磊[1] 刘婷[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《中国给水排水》2007年第8期84-87,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(50578052);新世纪优秀人才支持计划资助项目(NCET-04-0321)

摘　　要：采用反相高效液相色谱法，以甲醇：水=5：95（体积比）为流动相，用C18柱和紫外检测器对亚硝基二甲胺（NDMA）进行了分离和测定。结果表明：选择固定波长为228nm，流动相流量为1．0mL／min，测定NDMA线性范围为0．5—20．0ug/L时，标准偏差为0．07—0．076ug/L，相对标准偏差≤12．9％，水样加标回收率为85．9％-109％，方法检出限为5．2—5．6ng／L；该方法具有较好的线性关系、精密度和准确度，可用于快速分析饮用水中的消毒副产物亚硝基二甲胺。Taking methanol and water volumetric ratio of 5 ： 95 as mobile phase, trace nitrosodimethylamine （NDMA） was separated and determined by C18 column, ultraviolet detector when using reverse phase high performance liquid chromatogram. The result shows that under the condition of wave length 228 nm, mobile phase flow rate 1.0 mL/min and linear range from 0.5 to 20.0 ug/L, the standard deviation is 0.07 to 0.076 ug/L, the relative standard deviation is equal to or less than 12.9% , the recovery with standard addition is 85.9% to 109% and the method detection limit is 5.2 to 5.6 ng/L. This method has better linear relationship, precision and accuracy, can be used to quickly determine trace NDMA in drinking water.

关 键 词：亚硝基二甲胺 高效液相色谱 消毒副产物 痕量分析 

分 类 号：X703.1[环境科学与工程—环境工程]