摘要
建立了柱前衍生-高效液相法测定水中二甲基二硫代氨基甲酸钠(DTC)含量的方法。水样中的DTC和钴离子柱前衍生为稳定的络合物,用乙腈复溶解后采用C18色谱柱,以乙腈/水(60/40)为流动相等度洗脱,在257 nm波长下进行检测。结果表明,在0~100.0 mg/L范围内,DTC的质量浓度与对应的峰面积线性关系良好,方法的检出限为0.07 mg/L,DTC在水样中的平均回收率为99.3%,精密度(RSD)为2.5%。该方法准确、可靠,操作简便,可应用于快速检测水中DTC的含量。
A new method was developed for the determination Sodium dimethyldithiocarbamate in Water using high performance liquid chromatography with pre-column derivatization. The DTC in water and cobalt ion were derivatized as a stable complex. The complex was dissolved in acetonitrile and the chromatographic separation was performed on a C18 reversed phase column using acetonitrile/water(60/40) as the mobile phase and quantified by UV-vis spectroscopy at the wavelength of 257 nm. The results showed that the calibration curve was linear within the range of 0~100 mg/L. The limit of detection of this method was 0.07 mg/L. The average recovery and precision of DTC in water samples were 99.3% and 2.5% respectively. This method is simple, accurate and reliable, which is suitable for the rapid determination of DTC in water.
作者
马倩
迟臣华
黄晓晖
代荣逵
陈武帅
唐毅
MA Qian;CHI Cheng-hua;HUANG Xiao-hui;DAI Rong-kui;CHEN Wu-shuai;TANG Yi(Chongqing CAS Test Technical Services Co.,Ltd.,Chongqing 400700,China;Guangzhou CAS Test Technical Services Co.,Ltd.,Guangzhou 510650,China;Zhanjiang CAS Test Technical Services Co.,Ltd.,Zhanjiang 524043,China)
出处
《广州化学》
CAS
2019年第5期47-51,共5页
Guangzhou Chemistry
基金
重庆市社会事业与民生保障科技创新专项项目(cstc2017shms A20023)
广东省省级科技计划项目(2017A040403030)
关键词
二甲基二硫代氨基甲酸钠
柱前衍生
高效液相色谱
sodium dimethyldithiocarbamate
pre-column derivatization
high performance liquid chromatography
