溶剂萃取——硝酸溶液反萃取石墨炉原子吸收法连续测定海水中痕量铜、铅、镉和锌  

SOLVENT EXTRACTION COMBINED WITH BACKEXTRACTION FOR THE DETERMINATION OF CU, Pb, Cd AND Zn IN SEA WATER BY GFAAS

作　　者：易瑞灶[1] 许溪滨[1] 林力斌[1] 

机构地区：[1]国家海洋局第三海洋研究所

出　　处：《海洋湖沼通报》1990年第1期18-24,共7页Transactions of Oceanology and Limnology

摘　　要：采用国产WFX—IB型原子吸收分光光度计,以APDC—DDTC/MIBK—环己烷萃取,硝酸溶液反萃体系分离富集海水中痕量铜、铅、镉和锌,继用石墨炉原子吸收法连续测定。提出的方法可用于大洋、河口和近岸海水样的分析。本法检测限铜、铅、镉和锌,分别为0.013、0.022、0.0013和0.051微克/升,相对标准偏差均小于8%,回收率为96—108%。The APDC-DDTC/MIBK-cyclohexane extraction procedure combined with the backextraction with nitric acid is used to determine Cu, Pb, Cd and Zn in oceanic estuarine and coastal seawater by GFAAS. This method has the advantages of sensitivity and accuracy. The relative standard deviations of eight sequential determinations for the four elements in seawater are less than 8% are the recovery rates are 96-108%. The detection limits of Cu, Pb, Cd and Zn are 0.013, 0.022, 0.0013 and 0.051ppb. respectively The results are in agreement with the ASV method.

关 键 词：海水 铜 原子吸收法 铅 镉 锌 

分 类 号：P734.21[天文地球—海洋化学]