本工作提出一个快速、简便、灵敏的气相色谱测定天然水中ppb级镍的方法,在PH5—7的醋酸—醋酸钠缓冲溶液条件下,10—30毫升水样中的镍与二乙基二硫代氨基甲酸钠生成螯合物。用氯仿萃取两次,每次1毫升,然后以10.5N盐酸溶液洗涤氯仿层,蒸干后,以二硫化碳溶解,用氢火焰检测器进行气相色谱测定,色谱柱为1米×3毫米玻璃柱,装填1.5％SE—30/Ch;onosorb W(60—80目)。 This work proposed a fast, simple and sensitive method for the determination of ppb grade nickel in natural water by gas chromatography. In a pH 5-7 acetic acid-sodium acetate buffer solution, 10-30 ml of nickel in water sample mixed with diethyl disulfide Substitution of sodium carbamate chelate. The mixture was extracted twice with chloroform, 1 ml each time, and then the chloroform layer was washed with 10.5 N hydrochloric acid solution, evaporated to dryness, dissolved in carbon disulfide and subjected to gas chromatography with a hydrogen flame detector. The column was a 1 m × 3 mm glass column, Loading 1.5% SE-30 / Ch; onosorb W (60-80 mesh).